Item 225 SH PLFY P NCMU E OCH410D Parts OCB410D 1.pdf

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

INDOOR UNIT

CONTENTS

1. TECHNICAL CHANGES

2. FEATURES

3. PART NAMES AND FUNCTIONS

4. SPECIFICATIONS

5. 4-WAY AIR FLOW SYSTEM

6. OUTLINES AND DIMENSIONS

7. WIRING DIAGRAM

8. REFRIGERANT SYSTEM DIAGRAM

9. MICROPROCESSOR CONTROL

10. TROUBLESHOOTING

11. DISASSEMBLY PROCEDURE

R410A / R22

No. OCH410

REVISED EDITION-D

April 2012

NOTE:

• This manual describes only service data of the indoor units.

PARTS CATALOG (OCB410)

Revision:

• PLFY-P08/12/15NCMU-ER4.TH

have been added in

REVISED EDITION-D.

• Some descriptions have been modified.

• Please void OCH410

REVISED EDITION-C.

Model name indication

[Service Ref.]

PLFY-P08NCMU-E.TH

PLFY-P08NCMU-E1.TH

PLFY-P08NCMU-ER2.TH

PLFY-P08NCMU-ER3.TH

PLFY-P08NCMU-ER4.TH

PLFY-P12NCMU-E.TH

PLFY-P12NCMU-E1.TH

PLFY-P12NCMU-ER2.TH

PLFY-P12NCMU-ER3.TH

PLFY-P12NCMU-ER4.TH

PLFY-P15NCMU-E.TH

PLFY-P15NCMU-E1.TH

PLFY-P15NCMU-ER2.TH

PLFY-P15NCMU-ER3.TH

PLFY-P15NCMU-ER4.TH

Indoor unit [Model names]

PLFY-P08NCMU-E

PLFY-P12NCMU-E

PLFY-P15NCMU-E

1 TECHNICAL CHANGES

PLFY-P08NCMU-ER3.TH PLFY-P08NCMU-ER4.TH

PLFY-P12NCMU-ER3.TH PLFY-P12NCMU-ER4.TH

PLFY-P15NCMU-ER3.TH PLFY-P15NCMU-ER4.TH

• INDOOR CONTROLLER BOARD (I.B) has been changed. (S/W version up)

PLFY-P08NCMU-ER2.TH PLFY-P08NCMU-ER3.TH

PLFY-P12NCMU-ER2.TH PLFY-P12NCMU-ER3.TH

PLFY-P15NCMU-ER2.TH PLFY-P15NCMU-ER3.TH

• TURBO FAN and WASHER have been changed.

PLFY-P08NCMU-E1.TH PLFY-P08NCMU-ER2.TH

PLFY-P12NCMU-E1.TH PLFY-P12NCMU-ER2.TH

PLFY-P15NCMU-E1.TH PLFY-P15NCMU-ER2.TH

• The following functions of CONTROLLER BOARD (C.B) have been changed.

* Initial setting of auto restart function Not effective → effective (SW1-9 OFF → ON)

* External heating control change

PLFY-P08NCMU-E.TH PLFY-P08NCMU-E1.TH

PLFY-P12NCMU-E.TH PLFY-P12NCMU-E1.TH

PLFY-P15NCMU-E.TH PLFY-P15NCMU-E1.TH

• PANEL has been changed.

SLP-15AAU (White : 0.70Y 8.59/0.97) → SLP-15AAUW (Pure white : 6.4Y 8.9/0.4)

Use the specifi ed refrigerant only Never use any refrigerant other than that specifi ed.

Doing so may cause a burst, an explosion, or fi re when the unit is being used, serviced, or disposed of.

Correct refrigerant is specifi ed in the manuals and on the spec labels provided with our products.

We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions.

OCH410D

2 FEATURES

1. PERFECT PANEL SIZE

The brand new 22-7/16 inch PLFY-P08/12/15NCMU-E models are slim, attractive, yet powerful units.

PLFY-P08/12/15NCMU-E’s size and shape, which perfectly match 2-by-2 ceilings, and its lighter weight of 34 lbs (PLFY-P08NCMU-E) make installation even easier and more convenient.

2. 29 dB WHISPER-QUIET OPERATION (PLFY-P08NCMU-E) Ideal for cafés, bars, restaurants, and shops. Give all your customers the comfortable environment they deserve.

3. 2,500 HOUR LONG LIFE FILTER

Greatly reduces the frequency the filter needs to be replaced, making maintenance all the easier.

4. FRESH AIR INTAKE

Provides indoor air of the highest quality.

5. SMUDGE-FREE AIRFLOW

Reduces annoying drafts and smudging.

6. SLIM UNIT BODY FOR EASY INSTALLATION

The 22-7/16 inch slim body and octagonal shape, which make the distance between bolts only 16-17/32 inch, help installa-tion easy and maintenance trouble-free.

Models Cooling capacity / Heating capacity PLFY-P08NCMU-E 8,000 / 9,000 Btu/h PLFY-P12NCMU-E 12,000 / 13,500 Btu/h PLFY-P15NCMU-E 15,000 / 17,000 Btu/h

Indoor Unit

Ceiling surface

9- 1/

8- 3/

Unit 22-7/16

T-bar

20-7/8

-1

7/

-7

/1 6Suspension bolt pitch

22-11/16 23-5/8

Unit : inch

Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction.

Grille

Filter Removes dust and pollutants from return air.

Horizontal Air Outlet Sets horizontal airflow automatically during cooling or dehumidifying.

Air Intake Returns air from room.

3 PART NAMES AND FUNCTIONS

Indoor (Main) Unit

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION CLEAR

TEST

TEMP.

MENU

BACK DAYMONITOR/SET

CLOCK

ON/OFF

Temperature setting buttons

Down

Up

Timer Menu button (Monitor/Set button)

Mode button (Return button)

Set Time buttons

Back

Ahead

Timer On/Off button (Set Day button)

Opening the cover

ON/OFF button

Fan Speed button

Filter button (<Enter> button)

Test Run button

Check button (Clear button)

Airflow Up/Down button

Louver button ( Operation button)

To return operation number

Ventilation button ( Operation button)

To go to next operation numberBuilt-in temperature sensor

Wired remote controller Once the controllers are set, the same operation mode can be repeated by simply pressing the ON/OFF button.

Note:

The phrase "Wired remote controller" in this manual refers only to the PAR-21MAA.

If you need any information for the other remote controller, please refer to either the installation manual or initial setting manual which are included in remote controller's box.

Wired remote controller

°F°C °F°C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON

OFF

Hr

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

Display Section

For purposes of this explanation, all parts of the display are shown as lit. During actual operation, only the relevant items will be lit.

Identifies the current operation Shows the operating mode, etc.

*Multilanguage display is available.

“Centrally Controlled” indicator Indicates that operation from the remote controller has been prohib-ited by a master controller.

“Timer is Off” indicator Indicates that the timer is off.

Temperature Setting Shows the target temperature.

Day-of-Week Shows the current day of the week.

Time/Timer Display Shows the current time, unless the simple or Auto Off timer is set.

If the simple or Auto Off timer is set, the time to be switched off is shown.

“Sensor” indication Displays when the remote controller sensor is used.

“Locked” indicator Indicates that remote controller but-tons have been locked.

“Clean The Filter” indicator To be displayed on when it is time to clean the filter.

Timer indicators The indicator comes on if the corre-sponding timer is set.

Up/Down Air Direction indica-tor Shows the direction of the outcoming airflow.

“One Hour Only” indicator

Room Temperature display Shows the room temperature. The room temperature display range is 46~102°F.

The display blinks if the temperature is less than 46°F or 102°F or more.

Louver display Indicates the action of the swing louver.

Does not appear if the louver is not running.

(Power On indicator) Indicates that the power is on.

Fan Speed indicator Shows the selected fan speed.

Ventilation indicator Appears when the unit is running in Ventilation mode.

Displays if the airflow is set to low or downward during COOL or DRY mode. (Operation varies according to model.)

The indicator goes off in one hour, when the airflow direction also changes.

4 SPECIFICATIONS

4-1. SPECIFICATIONS

Note 1. Rating conditions Cooling : Indoor : D.B. 80°F W.B. 67°F outdoor : D.B. 95°F W.B. 75°F Heating : Indoor : D.B. 70°F outdoor : D.B. 47°F W.B. 43°F Note 2. The number indicated in < > is for the grille.

W 3. Air flow and the noise level are indicated as Low - Medium - High.

Item

Btu/h

Btu/h kW kW

A

A in in in

CFM

CFM

Pa kW in in in dB lb

Cooling capacity

Power

Heat exchanger

Insulator

Air filter

Fan × No.

Pipe dimensions

Field drain pipe size

Noise level 3

Product weight

Exterior (munsell symbol)

Fan motor output

External static pressure

Liquid side

Gas side

Heating capacity

Dimensions

Height

Width

Depth

El ec tric ch ar ac ter ist ic

Input Cooling

Heating

Cooling

Heating Current

PLFY-P08NCMU-E.TH

PLFY-P08NCMU-E1.TH

PLFY-P08NCMU-ER2.TH

PLFY-P08NCMU-ER3.TH

PLFY-P08NCMU-ER4.TH

8,000

9,000

0.05

0.05

0.23

0.23

280-320-350

250-290-320

0.015

29-32-38

34<7>

15,000

17,000

0.06

0.06

0.28

0.28

31-35-40

12,000

13,500

0.06

0.06

0.28

0.28

30-34-39

Single phase 208/230V 60HzV·Hz

Air flow

DRY

WET

Unit : Galvanized sheets with gray heat insulation

Grilles : ABS resin Munsell<0.7Y 8.59/0.97>(PLFY-P·NCMU-E.TH) / <6.4Y 8.9/0.4>(PLFY-P·NCMU-E1/ER2/ER3/ER4.TH)

22-7/16<25-19/32>

22-7/16<25-19/32>

Cross fin

Turbo fan × 1

Polyethylene sheet

PP honey comb fabric

1/2"

1/4"

O.D1-1/4"

8-3/16<25/32>

320-350-390

290-320-350

0.020

37<7>

F a n

PLFY-P12NCMU-E.TH

PLFY-P12NCMU-E1.TH

PLFY-P12NCMU-ER2.TH

PLFY-P12NCMU-ER3.TH

PLFY-P12NCMU-ER4.TH

PLFY-P15NCMU-E.TH

PLFY-P15NCMU-E1.TH

PLFY-P15NCMU-ER2.TH

PLFY-P15NCMU-ER3.TH

PLFY-P15NCMU-ER4.TH

UNIT

5ft

MICROPHONE

CEILING

4-2. NOISE CRITERION CURVES

63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

O C

TA

VE

B A

N D

S O

U N

D P

R

ES

SU

R

E

LE

VE

L, d B

(0 d

B

.0 μb ar

BAND CENTER FREQUENCIES, Hz

High Medium

SPL(dB)

LINENOTCH

Low 30

PLFY-P12NCMU-E.TH

PLFY-P12NCMU-E1.TH

PLFY-P12NCMU-ER2.TH

PLFY-P12NCMU-ER3.TH

PLFY-P12NCMU-ER4.TH

63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

O C

TA

VE

B A

N D

S O

U N

D P

R

ES

SU

R

E

LE

VE

L, d B

(0 d

B

.0 μb ar

BAND CENTER FREQUENCIES, Hz

High Medium

SPL(dB)

LINENOTCH

Low 31

PLFY-P15NCMU-E.TH

PLFY-P15NCMU-E1.TH

PLFY-P15NCMU-ER2.TH

PLFY-P15NCMU-ER3.TH

PLFY-P15NCMU-ER4.TH

63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

O C

TA

VE

B A

N D

S O

U N

D P

R

ES

SU

R

E

LE

VE

L, d B

(0 d

B

.0 μb ar

BAND CENTER FREQUENCIES, Hz

PLFY-P08NCMU-E.TH

PLFY-P08NCMU-E1.TH

PLFY-P08NCMU-ER2.TH

PLFY-P08NCMU-ER3.TH

PLFY-P08NCMU-ER4.TH

High Medium

SPL(dB)

LINENOTCH

Low 29

NOTE: The sound level is measured in an anechoic room where echoes are few, when compres-sor stops. The sound may be bigger than the indicated level in actual use due to surround-ing echoes. The sound level can be higher by about 2 dB than the indicated level during cool-ing and heating operation.

4-3. ELECTRICAL PARTS SPECIFICATIONS

Parts name

Service ref.

Symbol

TH21

TH22

TH23

FUSE

MF

C1

MV

DP

DS

LEV

H2

TB2

TB5

TB15

Resistance 30 F/15.8k , 50 F/9.6k , 70 F/6.0k , 80 F/4.8k , 90 F/3.9k , 100 F/3.2k

Resistance 30 F/15.8k , 50 F/9.6k , 70 F/6.0k , 80 F/4.8k , 90 F/3.9k , 100 F/3.2k

Resistance 30 F/15.8k , 50 F/9.6k , 70 F/6.0k , 80 F/4.8k , 90 F/3.9k , 100 F/3.2k

250V 6.3A

PLFY-P08NCMU-E.TH

PLFY-P08NCMU-E1.TH

PLFY-P08NCMU-ER2.TH

PLFY-P08NCMU-ER3.TH

PLFY-P08NCMU-ER4.TH

PLFY-P12NCMU-E.TH

PLFY-P12NCMU-E1.TH

PLFY-P12NCMU-ER2.TH

PLFY-P12NCMU-ER3.TH

PLFY-P12NCMU-ER4.TH

PLFY-P15NCMU-E.TH

PLFY-P15NCMU-E1.TH

PLFY-P15NCMU-ER2.TH

PLFY-P15NCMU-ER3.TH

PLFY-P15NCMU-ER4.TH

Thermistor (Room temperature detection) Thermistor (Pipe temperature detection/ Liquid) Thermistor (Pipe temperature detection/ Gas) Fuse (Indoor controller board)

Fan motor (with Thermal fuse)

Electric heater (Condensation proof)

Power supply terminal block

Transmission terminal block

MA remote controller terminal block

6-pole OUTPUT 15W

PK6N15-LA

6-pole OUTPUT 20W

PK6N21-LA

6-pole OUTPUT 20W

PK6N20-LA

Fan motor capacitor

Vane motor

Drain pump

Drain sensor

Linear expansion valve [coil]

Note: Refer to WIRING DIAGRAM for the supplied voltage.

Thermal fuse OFF 284 F 36 F

1.5 × 440V

MSBPC20M13

DC12V 300 /phase

PLD-12230ME-1

INPUT 12/10.8W 24 /Hr

Thermistor resistance 30 F/6.3k , 50 F/3.9k , 70 F/2.5k , 80 F/2.0k , 90 F/1.6k , 100 F/1.3k

DC12V Stepping motor drive, Port dimension 3.2 (0~2000pulse)

EDM-40YGME

240V 15W

(L1, L2,GR) Rated to 330V 30A

(M1, M2, S) Rated to 250V 20A

(1, 2) Rated to 250V 10A

5 4-WAY AIR FLOW SYSTEM

5-3. OPERATION IN CONJUNCTION

WITH DUCT FAN (BOOSTER FAN)

• Whenever the indoor unit is operating, the duct fun also operates.

(1) Connect the optional multiple remote controller adapter (PAC-SA88HA-E) to the connector CN51 on the indoor controller board.

(2) Drive the relay after connecting the 12V DC relay between the Yellow and Orange connector wires.

(*) Use a relay of 1W or smaller.

MB: Electromagnetic switch power relay for duct fan.

X: Auxiliary relay (For DC 12V, coil rating : 1.0W or below)

5-1. FRESH AIR INTAKE (Location for installation) At the time of installation, use the duct holes (cut out) located at the positions shown in following diagram, as and when required.

Refrigerant pipe Drain pipeElectrical Box

Fresh air intake Fresh air intake hole diagram (Unit : inch)

3 - 1/8 Burring hole

3-15/16 Burring hole pitch

2-7/8 (Cut out hole)

Ceiling surface

4-

/3

Static pressure : P [in. W.G. 10-2] Air flow : Q [CFM]20

-20

-40

-60

-80

-100

-120

0 20 40 60 80 100 120

PLFY-P08/12/15NCMU-E.TH PLFY-P08/12/15NCMU-E1.TH

PLFY-P08/12/15NCMU-ER2.TH PLFY-P08/12/15NCMU-ER3.TH

PLFY-P08/12/15NCMU-ER4.TH

Taking air into the unit

5-2. FRESH AIR INTAKE AMOUNT & STATIC PRESSURE CHARACTERISTICS

Q

B

A C

1 Curve in the left graphs

Duct characteristics at site

Q

A E

C

Q Qa

A D

NOTE: Fresh air intake amount should be 20% or less of whole air amount to prevent dew dripping.

CN51

Multiple remote controller adapter

PAC-SA88HA-E

Indoor controller board

Distance between indoor controller board and relay must be within 33ft.

Be sure to secure insulation material by tape, etc.

5 Green

Yellow Orange

Connector (5P)

Indoor unit side Multiple remote controller adapter

PAC-SA88HA-E

Be sure to secure insulation material by tape, etc.

Installation at site

CN51

on indoor unit board

Red Brown

CN51

MB

How to read curves

Q…Designed amount of fresh air intake

<CFM>

A…Static pressure loss of fresh air intake duct system with air flow amount Q <in. W.G.o10-2>

B…Forced static pressure at air condi-tioner inlet with air flow amount Q

<in. W.G.o10-2> C…Static pressure of booster fan with air flow amount Q <in. W.G.o10-2> D…Static pressure loss increase amount of fresh air intake duct sys-tem for air flow amount Q

<in. W.G.o10-2> E…Static pressure of indoor unit with air flow amount Q <in. W.G.o10-2> Qa…Estimated amount of fresh air intake without D <CFM>

5-4. FIXING HORIZONTAL VANE

Horizontal vane of each air outlet can be fixed according to the environment where it is installed.

Setting procedure

1) Turn off a main power supply (Turn off a breaker).

2) Disconnect the vane motor connector of the direction of the arrow with pressing the unlocking button as shown in figure below.

Insulate the disconnected connector with the plastic tape.

Vane motor

Horizontal vane

Connector Unlocking button

Vane motor

3) Set a vertical vane of the air outlet, which is to be fixed by the hand slowly within the range in the table below.

Measured standard position of the grille

Horizontal vane

< Specified range > Up/down airflow direction Horizontal 30° Downward 45° Downward 55° Downward 70°

A 21 mm 13/16 inch

25 mm 31/32 inch

28 mm 1-3/32 inch

30 mm 1-3/16 inch

· The vanes can be set between 21mm, 13/16 inch and 30 mm, 1-3/16 inch.

Caution:

Do not set the up/down vanes passed the specified range. Condensation could form and drop from the ceiling, or the unit could malfunction.

OUTLINES AND DIMENSIONS6

PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P15NCMU-E.TH

PLFY-P08NCMU-E1.TH PLFY-P12NCMU-E1.TH PLFY-P15NCMU-E1.TH

PLFY-P08NCMU-ER2.TH PLFY-P12NCMU-ER2.TH PLFY-P15NCMU-ER2.TH

PLFY-P08NCMU-ER3.TH PLFY-P12NCMU-ER3.TH PLFY-P15NCMU-ER3.TH

PLFY-P08NCMU-ER4.TH PLFY-P12NCMU-ER4.TH PLFY-P15NCMU-ER4.TH

Detail drawing of fresh air intake

Ceiling surface

Cut out hole 2-7/8( 73.4)

Burring hole 3- 1/8( 2.8)

3-15/16( 100)

4-

/3 2(

8)

1(25)

+5 0 (2

+3

/1

1- 1/

16 Unit : inch(mm)

19/32~1-15/32(15~37) 19/32~1-15/32(15~37)22-11/16~24-13/32(576~620)

22-7/16(570)

20-7/8(530)

Grille

Fresh air intake

Drain pipe VP-25 connection (O.D. 1-1/4( 32))

Vane motor

Drain hole

Models

Air intake grille

2- 5/

(5

5) 1-

3/ 8(

1-3/8(35) 2-5/32(55)

Auto vane

Grille

Air intake hole

A ir in ta ke h ol e

A ir ou tle t h ol e

Air outlet hole 11-27/32(301)

-2

7/

(3

-2

7/

(3

14-27/32(377)

-1

9/

(6

Suspension bolt M10 or W3/8

Suspension bolt lower edge

9-1/16(230)

7- 5/

(1

1- 7/

8(

Wiring entry

Terminal block Ceiling surface

9- 1/

4(

5) 8-

3/

(2

7-

/3

2(

3)

/3

2(

3-

/3 2(

1- 1/

2~ 2-

9/

(3 8~

2-

/3 2(

4- 3/

4(

1)

21/32(17) 7-15/16(202)

2- 7/

(5

6)

2- 1/

4(

) 3-7 /16

(87 )1-

7/

(3 1)

C ei lin g ho le

S us pe ns io n bo lt pi tc h

/3

2~ 1-

/3

2(

~3 7)

/3

2~ 1-

/3

2(

~3 7)

-1

1/

~2 4-

/3

2(

6~

0)

-1

7/

(4

-7

/1 6(

0)

-3

/1 6(

5)

7-27/32(199)

13-27/32(352) 13-3/16(335)

Suspension bolt pitch

Ceiling hole

25-19/32(650)

PLFY-P08/12/15NCMU-E.TH

PLFY-P08/12/15NCMU-E1.TH

PLFY-P08/12/15NCMU-ER2.TH

PLFY-P08/12/15NCMU-ER3.TH

PLFY-P08/12/15NCMU-ER4.TH

Brand label

Refrigerant pipe (1/2 (12.7) dia.)

flared connection

Refrigerant pipe (1/4 (6.35) dia.)

flared connection

V/M

V/M

V/M

V/M

Unit : inch(mm)

WIRING DIAGRAM7

PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P15NCMU-E.TH

PLFY-P08NCMU-E1.TH PLFY-P12NCMU-E1.TH PLFY-P15NCMU-E1.TH

DP

WHT

(DRAIN)

WHT

FAN

(FAN)

See Fig.1

MODELS

P08

P12

P15

<Fig.1>

ON

OFF

1 2 3 4 5 6

ON

OFF

1 2 3 4 5 6

ON

OFF

1 2 3 4 5 6

SW2

Power supply for MA-Remote controller on → Lamp is lit.

Main power supply(Indoor unit:208-230V) power on → Lamp is lit.Main power supply

Power supply for MA-Remote controllerLED2

LED1

Mark Meaning LED on indoor controller board for service

Function

CN32

(REM

OTE SW

ITCH)

W

HT

DC24-30V

CONTROLLER

TO NEXT INDOOR UNIT

PULL BOX

FUSE(15A)

BREAKER

(15A)

60Hz

HA

WHT

CN41 CN51

WHT

(CENTRALLY

CONTROL)

5 4 3 2 1

CN52

(REMOTE

INDICATION)

GRN

12345

REMOTE SWITCHCN32

X7 FAN MOTOR (Me) X6 FAN MOTOR (Hi) X5 FAN MOTOR (Lo)

SW1 SWITCH MODE SELECTION

CONNECTION No.SW14

SW12

SW11 ADDRESS SETTING 1ST DIGIT

ADDRESS SETTING 2ND DIGIT

MODEL SELECTION

MODE SELECTION

CAPACITY CODE

SW4

SW3

SW2

(32 F/15kΩ 77 F/5.4kΩ)

(32 F/15kΩ 77 F/5.4kΩ)

DP DRAIN PUMP

DS DRAIN SENSOR

H2 DEW PREVENTION HEATER

FAN MOTOR (LL)

DRAIN PUMP/DEW PREVENTION HEATERX1 AUX. RELAY

SYMBOL NAME

VARISTOR

INDOOR POWER BOARDP.B

ZNR

X4

I.B

CN41

CN51

CN52

FUSE FUSE (6.3A/250V)

REMOTE INDICATION

CENTRALLY CONTROL

HA TERMINAL-A

CONNECTOR

INDOOR CONTROLLER BOARD

[LEGEND]

NAMESYMBOL

PIPE TEMPERATURE DETECTION/GASTH23

TRANSMISSION

TERMINAL

BLOCK

POWER SUPPLY

TB5

TB15

TB2

(32 F/15kΩ 77 F/5.4kΩ)

THERMISTOR ROOM TEMPERATURE DETECTION

TH22

TH21

LEV LINEAR EXPANSION VALVE

MV

MF

VANE MOTOR

FAN MOTOR (WITH THERMAL FUSE)

CAPACITOR (FAN MOTOR)C1

PIPE TEMPERATURE DETECTION/LIQUID

MA-REMOTE CONTROLLER

LED2

LED1

31 1 3

CND

(POWER)

YLW

YLW

1 3

BLU

(D•U•M)

CNC

(D•HEATER)

RED ORN

FUSE

ZNR

CNP

X1

RED

ORN

GRILLE

BL

U

WHT

BLU

RED

ORN

YLW

RED

RED

C1

1 5

BL

K

YLW W

HTBR

N

7 9

X6 X5 X4 X7

X4 X7X5X6

MF

I.B

CN20

CN31

BL

U

WH

T

OR

N

RE

D

YLW 6

6 5 4 3 2 1

(VANE)

CN6V

GRN

RE

D

OR

N

BL

U

6 5 4 3 2 1

(LEV)

CN60

WHT

WH

T

YLWBR

N

BLK

2 2 11

(LIQUID)(INTAKE)

CN21

RED WHT

2 1

(GAS)

CN29

(R

EM

OC

ON

W

HT

RE

D

P.B

RED

CNDK

(POWER

BORD)

AC208-230V

CNSK(RED)

TB2 L1

L2

GR

RED

BLU

GRN/YLW

~/N 208-230V

POWER SUPPLY

TRANS DC13.1V

CN2S(WHT)

(P

OW

ER

B

O

RD

CN

2D

W

HT WHT

BLK

M1

2 CONTROLLER

DC8.7-13V

TO MA-REMOTE

CN

2M

(M -N

ET

) 1

CN

3A

BL

U

BL

U

M2

TB15

S(SHIELD)

M-NET REMOTE

TO OUTDOOR UNIT

BC CONTROLLERTB5

X1

TH23TH22TH21DS

LEV

3RD

DIGIT

O

0N

0FF

SW1

1 2 3 4 5 6 7 8 9 10

SW12 SW11

1ST

DIGIT

2ND

DIGIT

SW14

CONNECTION

No.

1 2 3 4 5

0FF

0N

SW4SW2

654321 10987654321

0FF

0N

SW3

MV

H2

MV

MV

MV

Notes:

1. At servicing for outdoor unit, always follow the wiring diagram of outdoor unit.

2. In case of using MA-Remote controller, please connect to TB15. (Remote controller wire is non-polar.)

3. In case of using M-NET, please connect to TB5. (Transmisson wire is non-polar.)

4. Symbol[S] of TB5 is the shield wire connection.

5. Symbols used in wiring diagram above are, :terminal block, :connecter.

6. The setting of the SW2 dip switch differs in the capacity. For the detail, refer to Fig.1.

7. Use copper supply wire.

The black square (■) indicates a switch position.

(RED)

(RED)

MODELS

P08

P12

P15

<Fig.1>

ON

OFF

1 2 3 4 5 6

ON

OFF

1 2 3 4 5 6

ON

OFF

1 2 3 4 5 6

SW2

Power supply for MA-Remote controller on → Lamp is lit.

Main power supply(Indoor unit:208-230V) power on → Lamp is lit.Main power supply

Power supply for MA-Remote controller

LED2

(RED)

LED1

(RED)

Mark Meaning LED on indoor controller board for service

Function

Notes:

1. At servicing for outdoor unit, always follow the wiring diagram of outdoor unit.

2. In case of using MA-Remote controller, please connect to TB15. (Remote controller wire is non-polar.)

3. In case of using M-NET, please connect to TB5. (Transmisson wire is non-polar.)

4. Symbol [S] of TB5 is the shield wire connection.

5. Symbols used in wiring diagram above are, : terminal block, :connecter.

6. The setting of the SW2 dip switch differs in the capacity. For the detail, refer to Fig.1.

7. Use copper supply wire.

The black square (■) indicates a switch position.

PLFY-P08NCMU-ER2.TH PLFY-P12NCMU-ER2.TH PLFY-P15NCMU-ER2.TH

PLFY-P08NCMU-ER3.TH PLFY-P12NCMU-ER3.TH PLFY-P15NCMU-ER3.TH

SYMBOL NAME

I.B INDOOR CONTROLLER BOARD

CN32

CN41

CN51

CONNECTOR

REMOTE SWITCH

CN24 EXTERNAL HEATER

P.B INDOOR POWER BOARD

HA TERMINAL-A

CENTRALLY CONTROL

CN52 REMOTE INDICATION

X1 X4 X5 X6 X7

AUX.

RELAY

FUSE FUSE(T6.3AL 250V)

SYMBOL NAME

TH21

DS

THERMISTOR ROOM TEMP. DETECTION

(32°F/15k ,77°F/5.4k )

PIPE TEMP. DETECTION / LIQUID

(32°F/15k ,77°F/5.4k )

PIPE TEMP. DETECTION / GAS

(32°F/15k ,77°F/5.4k )

DRAIN PUMP(TEST MODE)

TH22

TH23

DRAIN SENSOR

H2 DEW PREVENTION HEATER

DRAIN PUMP/DEW PREVENTION HEATER

FAN MOTOR(LL)

FAN MOTOR(Lo) FAN MOTOR(Hi) FAN MOTOR(Me)

MF

MV

LEV LINEAR EXPANSION VALVE

FAN MOTOR(WITH THERMAL FUSE)

VANE MOTOR

TB2

TB5

TB15

TRANSMISSION

MA-REMOTE CONTROLLER

TERMINAL

BLOCK

POWER SUPPLY

SW4

SW11

SW12

SW14

SWE

ADDRESS SETTING 1s DIGIT ADDRESS SETTING 10ths DIGIT BRANCH No.

SW1

SW2

SW3

CAPACITY CODE

MODE SELECTION

MODE SELECTION

MODEL SELECTION

SWITCH

<fig:*1>

MODELS SW2

P08 123456

ON

OFF

P12 123456

ON

OFF

P15 123456

ON

OFF

Notes:

1.At servicing for outdoor unit,always follow the wiring diagram of outdoor unit.

2.In case of using MA-Remote controller, please connect to TB15.

(Remote controller wire is non-polar.)

3.In case of using M-NET, please connect to TB5. (Transmission line is non-polar.)

4.Symbol [S]of TB5 is the shield wire connection.

5.Symbols used in wiring diagram above are, : terminal block, : connecter.

6.The setting of the SW2 dip switches differs in the capacity. For the detail, refer to the fig:*1.

7.Use copper supply wire.

DP

C1 CAPACITOR(FAN MOTOR)

DRAIN PUMP

Mark Meaning Function

Power supply for MA-Remote controller

Main power supply (Indoor unit) Power on → Iamp is lit

LED on indoor board for service

Main power supply

Power supply for MA-Remote controller on → Iamp is lit

LED1

(RED)

LED2

(RED)

1 3 5 7 9

5 14 1 6 19 1

L1 L2

GR

LED1

(RED)

LED2

(RED)

FAN

(WHT) 1 131 31 3

1 3

CNP

(BLU)

1 2345

SW3

SW2

ON

OFF

ON

OFF

SW4

ON

OFF

12345678910

SW1

12345678910

M 1~M

1~

RED

RE

D

ORN

BL

U

YL

W

YL

W

YL

W

BL

K

W

HT

W

HT

BR

N

MF DP

BLU

TB2

RED

GRN/YLW

P.B

I.B

GRILLE PULL

BOX

FUSE

(16A)

BREAKER

(16A)

TO NEXT

INDOOR

UNIT

POWER SUPPLY

208-230V 60Hz

CNSK

(RED)

CNDK

(RED)

CND

(ORN)

C1

CNC

(RED)

CN3A

(BLU)

CN2M

(BLU)

See fig:*1

TB5

M1 M2

TB15

S

TO MA-REMOTE

CONTROLLER

DC8.7-13V

TO OUTDOOR UNIT

BC CONTROLLER

M-NET REMOTE

CONTROLLER

DC24-30V

DC13.1V

CN2S

(WHT)

CN2D

(WHT)

CN24

(YLW)

TRANS

CN32

(WHT)

1 CN31

(WHT)CN41

(WHT)

CN51

(WHT)

CN60

(WHT)

CN90

(WHT)

3 1

FUSE

WHT

BLK

TH23

TH22

TH21DS

6 1

CN6V

(GRN)

5 1

CN52

(GRN) 0 1

SW12

0 1

SW11SW14

10ths

DIGIT

1s

DIGIT

BRANCH

No.

M

LEV

RE

D

YL

W

W

HT

O

RN

BL

U

BR

N

M

MV RED

RED

RED

YLW

H2

WHT

ORN

BLU

5M

MV

5 6

5M

MV

5M

MV

CN20

(RED)

CN21

(WHT)

CN29

(BLK)

X7X4 X1X5X6

0 1234

6789AB

C

D E F

SWE

OFF ON

LEGEND

t° t° t° t°

The black square (■) indicates a switch position.

PLFY-P08NCMU-ER4.TH PLFY-P12NCMU-ER4.TH PLFY-P15NCMU-ER4.TH

REFRIGERANT SYSTEM DIAGRAM8

Strainer (#50mesh)

Strainer (#100 mesh)

Strainer1 (#50 mesh) Strainer2 (#100 mesh)

Heat exchanger

Room temperature thermistor TH21

Gas pipe thermistor TH23

Liquid pipe thermistor TH22

Linear expansion valve

Gas pipe

Liquid pipe

Flare connection

Gas pipe

Liquid pipe

1/2

1/4

Refrigerant flow in cooling Refrigerant flow in heating

Unit : inch

PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P15NCMU-E.TH

PLFY-P08NCMU-E1.TH PLFY-P12NCMU-E1.TH PLFY-P15NCMU-E1.TH

PLFY-P08NCMU-ER2.TH PLFY-P12NCMU-ER2.TH PLFY-P15NCMU-ER2.TH

PLFY-P08NCMU-ER3.TH PLFY-P12NCMU-ER3.TH PLFY-P15NCMU-ER3.TH

PLFY-P08NCMU-ER4.TH PLFY-P12NCMU-ER4.TH PLFY-P15NCMU-ER4.TH

MICROPROCESSOR CONTROL9

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION CLEAR

TEST

TEMP.

MENU

BACK DAYMONITOR/SET

CLOCK

ON/OFF

ûFûC °F °C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON

OFF

Hr

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

INDOOR UNIT CONTROL

9-1. COOL OPERATION

Control modes Control details

1-1. Thermostat function (Function to prevent restarting for 3 minutes)

• Room temperature desired temperature + 2°F ···Thermo ON

• Room temperature desired temperature ···Thermo OFF

1-2. Anti-freezing control Detected condition : When the liquid pipe temp. (TH22) is 32°F or less in 16 minutes from compressor's start up, anti-freezing control starts and the thermo OFF.

Released condition : The timer which prevents reactivating is set for 3 minutes, and anti-freezing control is cancelled when any one of the following conditions is satisfied.

Liquid pipe temp. (TH22) turns 50°F or above.

The condition of the thermo OFF has completed by thermostat, etc.

The operation modes became mode other than COOL.

The operation stopped.

By the remote controller setting (switch of 3 speeds)2. Fan

1. Thermostat function

Remarks

Type Fan speed notch

[Low], [Med], [High]3 speeds type

Continued to the next page

<How to operate> 1 Press POWER ON/OFF button.

2 Press the operation MODE button to display COOL.

3 Press the TEMP. button to set the desired temperature.

NOTE: The set temperature changes 1°F(2°F) when the or button is pressed once. Cooling 67 to 87°F

Variable range of the set temperature depends on the remote control-ler which is applied.

1→

Control modes Control details

3-1. Drain pump control

• Always drain pump ON during the COOL and DRY mode operation.

(Regardless of the thermo ON/ OFF)

• When the operation mode has changed from the COOL or DRY to the others (including Stop), OFF the control after the drain pump ON for 3 minutes.

Drain sensor function

• Energize drain sensor at a fixed voltage for a fixed duration. After energizing, compare the drain sensor’s temperature to the one before energizing, and judge whether the sensor is in the air or in the water.

Basic control system

• While drain pump is turned on, repeat the following control system and judge whether the sensor is in the air or in the water.

• Drain sensor temperature rise (∆t)

• Temperature of drain sensor before current is applied (T0)

• Temperature of drain sensor after current is applied (T1)

[ ∆t = T1 – T0 ]

(1) Initial setting : Start at COOL mode and horizontal vane.

(2) Vane position : Horizontal →Downward A →Downward B →Downward C→Swing

(3) Restriction of the downward vane setting When setting the downward vane A, B or C in [Med] or [Low] of the fan speed notch, the vane changes to horizontal position after 1 hour.

4. Vane (up/down vane change)

3. Drain pump

Remarks

Drain sensor Indoor control P.C. board

CN31

"Only 1 Hr" appears on the wired remote controller.

Timing of energizing drain sensor

ON

OFF

Stand by for a minute sec.

sec.

Detect the temperature before energizing (T0)

Detect the temperature after energizing (T1)

Judge whether the sensor is in the air or in the water.

Stand by for a minute

·······Repeat

From the preceding page

Control modes Control details

1-1. Thermostat function (Function to prevent restarting for 3 minutes) Setting the Dry thermo by the thermostat signal and the room temperature (TH21).

Dry thermo ON Room temperature desired temperature + 2°F Dry thermo OFF Room temperature desired temperature

1-2. Freeze prevention control No control function

Indoor fan operation controll depends on the compressor conditions.

3. Drain pump

1. Thermostat function

Remarks

Room temperature

3 min. passed since starting operation

Thermostat signal Room temperature (T1)

Dry thermo

ON

time (min)

Dry thermo

OFF

time (min)

Less than 64°F

Over 64°F

ON

OFF

T1 83°F 83°F > T1 79°F 79°F > T1 75°F 75°F > T1

Unconditional

9 3 7 3 5 3 3 3

Dry thermo OFF

2. Fan

Note: Remote controller setting is not acceptable.

Dry thermo Fan speed notch

ON

OFF

[Low]

Stop

4. Vane (up/down vane change)

Same control as COOL operation

Same control as COOL operation

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION CLEAR

TEST

TEMP.

MENU

BACK DAYMONITOR/SET

CLOCK

ON/OFF

ûFûC °F °C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON

OFF

Hr

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

9-2. DRY OPERATION

<How to operate> 1 Press POWER ON/OFF button.

2 Press the operation MODE button to display DRY.

3 Press the TEMP. button to set the desired temperature.

NOTE: The set temperature changes 1°F(2°F) when the or button is pressed once. Dry 67 to 87°F

Variable range of the set temperature depends on the remote control-ler which is applied.

Set by remote controller.

2. Drain pump

Remarks

1. Fan Type Fan speed notch

3 speeds type [Low], [Med], [High]

3. Vane (up/down vane change)

2-1. Drain pump control The drain pump turns ON for the specified amount of time when any of the following conditions is met:

ON for 3 minutes after the operation mode is switched from COOL or DRY to another operation mode (FAN).

ON for 6 minutes after the drain sensor is determined to be submerged using the liquid level detection method given below.

ON for 6 minutes after indoor piping (liquid piping) temperature – indoor intake temperature -18°F, AND the drain sensor input is at the short or open level.

(If condition or is still being met after the drain pump has been turned ON for 6 minutes, the drain pump is kept ON for further 6 minutes.)

2-2. Liquid level detection method The liquid level is detected by determining whether or not the drain sensor is submerged, based on the amount the temperature rises after self-heating the sensor. This process is performed if any of the following conditions is met:

Drain pump is ON.

Indoor piping (liquid piping) temperature – indoor intake temperature -18°F Indoor piping (liquid piping) temperature or indoor intake temperature is at the short or open level temperature.

Every 1 hour after the drain pump has been switched from ON to OFF and 1 hour have passed.

Same as the control performed during the COOL operation, but no restriction on the vane's downward blow setting

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION CLEAR

TEST

TEMP.

MENU

BACK DAYMONITOR/SET

CLOCK

ON/OFF

ûFûC °F °C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON

OFF

Hr

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

9-3. FAN OPERATION

<How to operate> 1 Press POWER ON/OFF button.

2 Press the operation MODE button to display FAN.

1-1. Thermostat function (Function to prevent restarting for 3 minutes)

• Room temperature desired temperature -2°F ···Thermo ON

• Room temperature desired temperature ···Thermo OFF

1. Thermostat function

Remarks

Controlled by the remote controller (3-speed) Give priority to controlled mode mentioned below.

2-1. Hot adjust mode 2-2. Residual heat exclusion mode 2-3. Thermo OFF mode (When the compressor off by the thermostat) 2-4. Cool air prevention mode (Defrosting mode) 2-5. Capacity increasing mode

2-1. Hot adjust mode The fan controller becomes the hot adjust mode for the following conditions.

When starting the HEAT operation When the thermostat function changes from OFF to ON.

When release the HEAT defrosting operation

2. Fan

A: Hot adjust mode start B: 5 minutes have passed since the condition A or the indoor liquid pipe temperature turned 95°F or more C: 2 minutes have passed since the condition A (Terminating the hot adjust mode)

A CB

[Extra Low]

[Low]

Set fan speed by the remote controller

Hot adjust mode 1

2-2. Residual heat exclusion mode When the condition changes the auxiliary heater ON to OFF (thermostat or operation stop, etc), the indoor fan operates in [Low] mode for 1 minute.

This control is same for the model without auxiliary heater.

"STAND BY" will be displayed during the hot adjust mode.

Continued to the next page

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION CLEAR

TEST

TEMP.

MENU

BACK DAYMONITOR/SET

CLOCK

ON/OFF

ûFûC °F °C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON

OFF

Hr

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

9-4. HEAT OPERATION

<How to operate> 1 Press POWER ON/OFF button.

2 Press the operation MODE button to display HEAT.

3 Press the TEMP. button to set the desired temperature.

NOTE: The set temperature changes 1°F(2°F) when the or button is pressed once. Heating 63 to 83°F

Variable range of the set temperature depends on the remote controller which is applied.

<Display in HEAT operation>

[DEFROST]

The [DEFROST] symbol is only displayed during the defrost operation.

[STANDBY]

The [STANDBY] symbol is only displayed during hot adjust mode.

Control modes Control details

2. Fan

Remarks

2-3. Thermo OFF mode When the thermostat function changes to OFF, the indoor fan operates in

[Extra low].

2-4. Heat defrosting mode The indoor fan stops.

No drain pump operation However, when the control changes from COOL or DRY operation, the drain pump operates for 3 minutes.

(1) Initial setting : OFF → HEAT···[last setting] When changing the mode from exception of HEAT to HEAT operation ···[Downward C]

(2) Vane position :

Horizontal →Downward A →Downward B →Downward C→Swing

(3) Restriction of vane position The vane is horizontally fixed for the following modes.

(The setting by the remote controller is temporarily invalidated and vane control is set by the unit controller.)

• Thermo OFF

• Hot adjust [Extra low] mode

• Heat defrost mode

3. Drain pump

4. Vane control (Up/down vane change)

From the preceding page

1. Drain pump

Control modes Control details

HEAT mode for room temperature < Desired temperature COOL mode for room temperature Desired temperature

(1) HEAT mode → COOL mode Room temperature Desired temperature + 3°F or 3 minutes has passed

(2) COOL mode → HEAT mode Room temperature Desired temperature - 3°F or 3 minutes has passed

1. Initial value of operation mode

Remarks

2. Mode change

Same control as cool operation3. COOL mode

Same control as heat operation4. HEAT mode

Control modes Control details

1-1. Drain pump control The drain pump turns ON for the specified amount of time when any of the following conditions is met (regardless of whether the compressor is ON or OFF)

ON for 3 minutes after the operation mode is switched from COOL or DRY to another operation mode (HEAT mode).

ON for 6 minutes after the drain sensor is determined to be submerged using the liquid level detection method given below.

ON for 6 minutes after indoor piping (liquid piping) temperature – indoor intake temperature 14°F, and the drain sensor input is at the short or open level.

(If condition or is still being met after the drain pump has been turned ON for 6 minutes, the drain pump is kept ON for a further 6 minutes.)

1-2. Liquid level detection method The liquid level is detected by determining whether or not the drain sensor is submerged, based on the amount the temperature rises after self-heating the sensor.

This process is performed if any of the following conditions is met:

Drain pump is ON.

Indoor piping (liquid piping) temperature – indoor intake temperature 14°F

(except during defrosting) Indoor piping (liquid piping) temperature or indoor intake temperature is at the short or open level temperature.

Every 1 hour after the drain pump has been switched from ON to OFF.

Remarks

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION CLEAR

TEST

TEMP.

MENU

BACK DAYMONITOR/SET

CLOCK

ON/OFF

ûFûC °F °C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON

OFF

Hr

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

9-5. AUTO OPERATION [AUTOMATIC COOL/HEAT CHANGE OVER OPERATION]

<How to operate> 1 Press POWER ON/OFF button.

2 Press the operation MODE button to display AUTO.

3 Press the TEMP. button to set the desired temperature.

NOTE: The set temperature changes 1°F(2°F) when the or button is pressed once. Automatic 67 to 83°F

Variable range of the set temperature depends on the remote controller which is applied.

“AUTO” works to change the operation mode either to cooling or heat-ing according to the room temperature.

9-6. WHEN UNIT IS STOPPED CONTROL MODE

10 TROUBLESHOOTING

10-1. HOW TO CHECK THE PARTS

PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P15NCMU-E.TH

PLFY-P08NCMU-E1.TH PLFY-P12NCMU-E1.TH PLFY-P15NCMU-E1.TH

PLFY-P08NCMU-ER2.TH PLFY-P12NCMU-ER2.TH PLFY-P15NCMU-ER2.TH

PLFY-P08NCMU-ER3.TH PLFY-P12NCMU-ER3.TH PLFY-P15NCMU-ER3.TH

PLFY-P08NCMU-ER4.TH PLFY-P12NCMU-ER4.TH PLFY-P15NCMU-ER4.TH

Parts name Check points

Disconnect the connector then measure the resistance with a tester.

(At the ambient temperature 50 F~86 F)

Disconnect the connector then measure the resistance valve with a tester.

Measure the resistance between the terminals with a tester. (At the ambient temperature 68 F~86 F)

Measure the resistance between the terminals with a tester.

(At the ambient temperature 68 F~86 F)

Measure the resistance after 3 minutes have passed since the power supply was intercepted.

(At the ambient temperature 32 F~140 F)

Vane motor (MV)

Linear expansion valve (LEV)

Drain pump (DP)

Drain sensor (DS)

Refer to the next page for the details.

Refer to the next page for the details.

Thermistor (TH21) (Room temperature detection) Thermistor (TH22) (Pipe temperature detection/ Liquid) Thermistor (TH23) (Pipe temperature detection/ Gas)

Yellow

Relay connector

Yellow

Normal 4.3k ~9.6k

Abnormal Open or short

Abnormal Open or short

Normal 0.6k ~6.0k

Abnormal

Open or short

Normal

200 10%

White-Red Yellow-Brown Orange-Red Blue-Brown

NormalConnector Abnormal

300 Open or short

Normal Abnormal 290 Open or short

OrangeRedWhite

Blue

Brown

Yellow

M

Orange Red

White Red — Yellow Red — Blue Red — Orange Red — WhiteBlue Yellow

Fan motor (MF)

M

Refer to the next page for the details.

BLK RED ORNYLWBLU BRN

WHT

P

Measure the resistance between the terminals with a tester. (Coil wiring temperature 50 F~86 F)

Normal

WHT-BLK

BLK-BLU

BLU-YLW

YLW-RED

RED-BRN

303 ~328 105 ~114 39 ~42

235 ~254

272 ~295 79 ~85 37 ~40

191 ~206

PLFY-P08NCMU-E

PLFY-P08NCMU-E1

PLFY-P08NCMU-ER2

PLFY-P08NCMU-ER3

PLFY-P08NCMU-ER4

387 ~418 77 ~83 19 ~21

179 ~193

Abnormal

Opened or short-circuited

: Thermal fuse 284°F±36 F

PLFY-P12NCMU-E

PLFY-P12NCMU-E1

PLFY-P12NCMU-ER2

PLFY-P12NCMU-ER3

PLFY-P12NCMU-ER4

PLFY-P15NCMU-E

PLFY-P15NCMU-E1

PLFY-P15NCMU-ER2

PLFY-P15NCMU-ER3

PLFY-P15NCMU-ER4

4 4

2 2

1 1

Controller board

Drive circuit

Connector (CN60)

DC12V

Brown

Red

Blue

Orange

Yellow

White

M

Blue

Brown

Yellow

OrangeRedWhite

Linear expansion valve

<Thermistor characteristic graph>

Room temperature thermistor(TH21) Liquid pipe temperature thermistor(TH22) Gas pipe temperature thermistor(TH23)

Thermistor R0=15k' ± 3% Fixed number of B=3480 ± 2%

Rt=15exp { 3480( ) }

30_F 15.8k' 50_F 9.6k' 70_F 6.0k' 80_F 4.8k' 90_F 3.9k' 100_F 3.2k'

Thermistor R0=6.0k' ±5% Fixed number of B=3390 ± 2%

Rt=6exp { 3390( ) }

30_F 6.3k' 50_F 3.9k' 70_F 2.5k' 80_F 2.0k' 90_F 1.6k' 100_F 1.3k'

Thermistor for lower temperature

Linear expansion valve 1 Operation summary of the linear expansion valve

• Linear expansion valve open/close through stepping motor after receiving the pulse signal from the indoor controller board.

• Valve position can be changed in proportion to the number of pulse signal.

<Connection between the indoor controller board and the linear expansion valve>

273+(t-32)/1.8

273+(t-32)/1.8

Thermistor for drain sensor

0-20 20 40 60 80 100 120

< Thermistor for lower temperature >

Temperature (°F)

R es is ta nc e

(k

20 40 60 80 100 120 140 170

< Thermistor for drain sensor >

Temperature (°F)

R es is ta nc e

(k

Output (Phase)

Output

{1

ON

{2 ON

{3 OFF

{4 OFF

OFF

ON

ON

OFF

OFF

OFF

ON

ON

ON

OFF

OFF

ON

<Output pulse signal and the valve operation>

2 Linear expansion valve operation

3 Troubleshooting

D

A

E

B

C

Open

Extra tightening (80~100pulse)

Pulse number

2000 pulse Opening a valve all the way

Close

Va lv e po si tio n (c ap ac ity

LED1k

Symptom Check points

Operation circuit failure of the micro processor

Disconnect the connector on the controller board, then con-nect LED for checking.

Pulse signal will be sent out for 10 seconds as soon as the main switch is turned on. If there is LED with lights on or lights off, it means the operation circuit is abnormal.

Countermeasures

Exchange the indoor con-troller board at drive circuit failure.

Linear expansion valve mechanism is locked.

Valve does not close completely (thermis-tor leaking).

Wrong connection of the connector or contact failure

To check the linear expansion valve, operate the indoor unit in fan mode and at the same time operate other indoor units in cooling mode, then check the pipe temperature <liquid pipe temperature> of the indoor unit by the out-door multi controller board operation moni-tor. During fan operation, linear expansion valve is closed completely and if there are some leaking, detecting temperature of the thermistor will go lower. If the detected temperature is much lower than the tem-perature indicated in the remote controller, it means the valve is not closed all the way. It is not necessary to exchange the linear expansion valve, if the leakage is small and not making any trouble.

Thermistor (Liquid pipe)

Linear expansion valve

Motor will idle and make ticking noise when motor is operated while the linear expansion valve is locked. This ticking sound is the sign of the abnormality.

Check the color of lead wire and missing terminal of the con-nector.

Exchange the linear expan-sion valve.

Exchange the linear expan-sion valve.

If a large amount of refrig-erant is leaked, exchange the linear expansion valve.

Disconnect the connector at the controller board, then check the continuity.

Measure the resistance between the each coil (red-white, red-orange, brown-yellow, brown-blue) with a tester. It is nor-mal if the resistance is in the range of 200 i 10%

Short or breakage of the motor coil of the linear expansion valve

Closing a valve : 1 → 2 → 3 → 4 → 1 Opening a valve : 4 → 3 → 2 → 1 → 4

The output pulse shifts in above order.

• When linear expansion valve operation stops, all output phases become OFF.

• At phase interruption or when phase does not shift in order, motor does not rotate smoothly and motor will lock and vibrate.

• When the switch is turned on, 2200 pulse closing valve signal will be sent till it goes to A point in order to define the valve position.

• When the valve moves smoothly, there is no sound or vibration occurring from the linear expansion valve; however, when the pulse number moves from E to A or when the valve is locked, more sound can be heard than normal situation.

• Sound can be detected by placing the ear against the screw driver handle while putting the screw driver to the linear expansion valve.

10-2. FUNCTION OF DIP SWITCH

Switch Function RemarksEffective timing

Under suspension

Under suspension

Before power supply

ON

Before power supply

ON

<Initial setting>

ON

OFF

1 2 3 4 5 6 7 8 9 10

Operation by switch

ON OFF

Pole

Built-in remote controller

Provided

2,500h

Effective

Thermo ON signal indication

Fan operation at Heating mode

Low 1

Setting air flow 1

Effective

Effective

Filter clogging detection

Filter cleaning

Fresh air intake

Remote indication switching

Humidifier control

Airflow setting during thermo OFF in heating mode

Auto restart function

Power ON/OFF

Indoor unit

Not provided

100h

Not effective

Fan output indication Thermo ON operation at heating mode

Extra low 1

Depends on SW1-7

Not effective

Not effective

Cooling only

Available

Available

Available

Second setting 5

Horizontal angle

Effective

Not effective

Heat pump / Cooling only

Louver

Vane

Vane swing function

Vane horizontal angle

Vane cooling limit angle setting 3

Heat 4degrees up

Superheat setting temperature 4

Sub cool setting temperature 4

Heat pump

Not available

Not available

Not available

First setting

Down B, C

Not effective

Effective

SW2

Capacity code setting

1~6

1~5

SW3

Function setting

Thermistor <Room temperature detection> position

<Initial setting>

ON

OFF

1 2 3 4 5 6 7 8 9 10

Indoor controller board

Note :

3 At cooling mode, each angle can be used only 1 hour.

4 Do not use SW3-9, 10 as trouble might be caused by the usage condition.

5 Second setting is same as first setting

Indoor controller board

<Initial setting>

Set while the unit is off.

Set for each capacity.

Indoor controller board

Indoor controller board

ON

OFF

1 2 3 4 5

Capacity

P12

P08 P15

SW 2 Capacity SW 2

ON

OFF

1 2 3 4 5 6

ON

OFF

1 2 3 4 5 6

ON

OFF

1 2 3 4 5 6

SW1

Function Selection

SW4

Unit

Selection

Indoor linear expansion valve opening

In case of replacing the indoor controller board, make sure to set the switch to the initial setting, which is shown below.

SW 1-7

OFF

ON

OFF

ON

SW 1-8

OFF

OFF

ON

ON

Fan speed

Extra low

Low

Setting air flow stop

2 SW1-9 setting

PLFY-P·NCMU-E(1) :OFF

PLFY-P·NCMU-ER2/ER3/ER4:ON

The black square ( ) indicates a switch position.

8 37

1 0

8 37

8 37

1 0

8 37

F

E

D 5C

B

A

F

E

D 5C

B

A

R ot ar y sw itc h R ot ar y sw itc h

SW14

Connection

No.

setting

SW11

1s digit address setting

SW12

10ths digit address setting

Pole Operation by switch

How to set addresses Example: If address is "3", remain SW12 (for over 10) at "0", and match SW11 (for 1 to 9) with "3".

How to set branch numbers SW14 (Series R2 only) Match the indoor unit’s refrigerant pipe with the BC controller’s end connection number.

Remain other than series R2 at "0".

Remarks

<Initial setting>

SW12

SW11

SW12 SW11

SW14

SW14

<Initial setting>

Effective timing

Before power supply ON Indoor controller board

Indoor controller board

10-3. TEST POINT DIAGRAM

10-3-1. Indoor power board

PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P15NCMU-E.TH

PLFY-P08NCMU-E1.TH PLFY-P12NCMU-E1.TH PLFY-P15NCMU-E1.TH

PLFY-P08NCMU-ER2.TH PLFY-P12NCMU-ER2.TH PLFY-P15NCMU-ER2.TH

PLFY-P08NCMU-ER3.TH PLFY-P12NCMU-ER3.TH PLFY-P15NCMU-ER3.TH

PLFY-P08NCMU-ER4.TH PLFY-P12NCMU-ER4.TH PLFY-P15NCMU-ER4.TH

CNSK

Connect to the indoor controller board (CNDK) Between 1 to 3 208-230V AC

CN2S

Connect to the indoor controller board (CN2D) Between 1 to 3 12.5-13.7V DC (Pin1 (+))

LED1

Main power supply (Indoor unit : 208-230V)

CND

Power supply for indoor controller board Between 1 to 3

208-230V AC

CNP

Drain pump output (DP) Between 1 to 3

208-230V AC

FUSE

6.3A 250V

CNDK

Connect to the indoor power board (CNSK) Between 1 to 3

208-230V AC

FAN

Fan motor output (MF)

CN2D

Connect to the indoor power board (CN2S) 12.5-13.7V DC (Pin1 (+))

CN2M

Connect to the terminal block (TB5) (M-NET transmission connecting wire) 24-30V DC (non-polar)

CN3A

Connect to the terminal block (TB15) (MA-Remote controller connecting wire) Between 1 to 3 8.7-13V DC (Pin1 (+))

CN29

Pipe temperature detection/Gas (TH23)

CN21

Pipe temperature detection/Liquid (TH22)

LED2

Power supply for MA-Remote controller

SW4

Model selection

CN60

Linear expansion valve output (LEV) 12VDC pulse output

CN31

Drain sensor (DS)

SW3

Function setting

SW2

Capacity setting

CN6V

Vane motor output (MV) 12VDC pulse output

CN20

Room temperature detection (TH21)

CN32

Connector (Remote switch)

CN27

Connector (Damper)

10-3-2. Indoor controller board

PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P15NCMU-E.TH

PLFY-P08NCMU-E1.TH PLFY-P12NCMU-E1.TH PLFY-P15NCMU-E1.TH

SW11

Address setting 1s DIGIT

SW12

Address setting 10ths DIGIT

SW14

Branch No.

SW1

Function setting

CN51

Centrally control 1-2: Control signal

12VDC pulse input (1: +) 3-4: Operation indicator

12VDC (3: +)

3-5: Malfunction indicator

12VDC (3: +)

CN52

Remote indicator 1-2: Status lamp 12VDC (1 : +) Fan motor output (SW1-5 OFF) Thermostat ON (SW1-5 ON) 1-3: Cooling/Dry status lamp

12VDC (1 : +)

1-4: Heating status lamp

12VDC (1 : +)

CNC

Dew prevention heater Between 1 to 3

208-230V AC

PLFY-P08NCMU-ER2.TH PLFY-P12NCMU-ER2.TH PLFY-P15NCMU-ER2.TH

PLFY-P08NCMU-ER3.TH PLFY-P12NCMU-ER3.TH PLFY-P15NCMU-ER3.TH

PLFY-P08NCMU-ER4.TH PLFY-P12NCMU-ER4.TH PLFY-P15NCMU-ER4.TH

LED1

Main power supply (Indoor unit : 220-240V)

CND

Power supply for indoor controller board Between 1 to 3

208-230V AC

CNP

Drain pump output (DP) Between 1 to 3

208-230V AC

FUSE

6.3A 250V

CNDK

Connect to the indoor power board (CNSK) Between 1 to 3

208-230V AC

FAN

Fan motor output (MF)

CN2D

Connect to the indoor power board (CN2S) 12.5-13.7V DC (Pin1 (+))

CN2M

Connect to the terminal block (TB5) (M-NET transmission connecting wire) 24-30V DC (non-polar)

CN3A

Connect to the terminal block (TB15) (MA-Remote controller connecting wire) Between 1 to 3 8.7-13V DC (Pin1 (+))

CN29

Pipe temperature detection/Gas (TH23)

CN21

Pipe temperature detection/Liquid (TH22)

LED2

Power supply for MA-Remote controller

SW4

Model selection

CN60

Linear expansion valve output (LEV) 12VDC pulse output

CN31

Drain sensor (DS)

SW3

Function setting

CN51

Centrally control 1-2: Control signal

12VDC pulse input (1: +) 3-4: Operation indicator

12VDC (3: +)

3-5: Malfunction indicator

12VDC (3: +)

SW2

Capacity setting

CN6V

Vane motor output (MV) 12VDC pulse output

CN20

Room temperature detection (TH21)

CN32

Connector (Remote switch)

CN27

Connector (Damper)

12VDC (1: +)

SW11

Address setting 1s DIGIT

SW12

Address setting 10ths DIGIT

SW14

Branch No.

CN90

Connect to the wireless junction cable

SW1

Model selection

Jumper wire J41, J42 Pair No. setting for wireless remote controller

CN24

External heater

12VDC (1: +)

CN52

Remote indicator 1-2: Status lamp 12VDC (1 : +) Fan motor output (SW1-5 OFF) Thermostat ON (SW1-5 ON) 1-3: Cooling/Dry status lamp

12VDC (1 : +)

1-4: Heating status lamp

12VDC (1 : +)

CNC

Dew prevention heater Between 1 to 3

208-230V AC

DISASSEMBLY PROCEDURE11

OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS

1. Removing the air intake grille

(1) Slide the knob of air intake grille to the direction of the arrow 1 to open the air intake grille.

(2) Remove the string hook from the panel to prevent the grille from dropping.

(3) Slide the hinge of the intake grille to the direction of the arrow 2 and remove the air intake grille.

4. Removing the electrical parts

(1) Remove the 2 screws and the control box cover.

<Electrical parts in the control box>

• Indoor controller board (I.B)

• Indoor power board (P.B)

• Fan motor capacitor (C1)

• Fuse (FUSE)

• Varistor (ZNR)

• Terminal block (TB)

Be careful when removing heavy parts.

Photo 3

Figure 1 Air intake grille

Grille

2. Removing the fan guard

(1) Open the air intake grille.

(2) Remove the 3 screws of fan guard.

Air intake grille knob

3. Removing the panel

(1) Remove the air intake grille. (Refer to 1) Corner panel (See Figure 2)

(1) Remove the screw of the corner.

(2) Slide the corner panel to the direction of the arrow 3, and remove the corner panel.

Panel (See Photo 2)

(1) Disconnect the connector that connects with the unit.

(2) Remove the 2 screws from the panel and loose other

2 screws, which are fixed to the oval hole, have different diameter.

(3) Rotate the panel a little to remove the screws. (Slide the panel so that the screw comes to a larger diameter of the oval hole, which has two different diameters.)

Photo 1

Screws

Air intake grille

Photo 2

Figure 2

Corner panel

Screw Corner panel Panel

Panel Screws

Connector Screws

Fan guard

Indoor controller board (I.B)

Fuse

(FUSE)

Indoor power board (P.B)

Terminal block (TB2)

Indoor controller box

PLFY-P08/12/15NCMU-E.TH PLFY-P08/12/15NCMU-E1.TH

PLFY-P08/12/15NCMU-ER2.TH PLFY-P08/12/15NCMU-ER3.TH

PLFY-P08/12/15NCMU-ER4.TH

Terminal block (TB5)

Varistor

(ZNR)

Fan motor Capacitor (C1)

Terminal block

(TB15)

OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS

7. Removing the pipe temperature detection/liquid (TH22) and pipe temperature detection/gas (TH23)

(1) Remove the panel. (Refer to procedure 3)

(2) Remove the drain pan. (Refer to procedure 6)

(3) Disconnect the liquid or gas from the holder.

(4) Remove the 3 screws fixed to the piping cover, and remove the piping cover. (See Photo 9)

(5) Remove the 2 screws fixed to the control box cover, and remove the control box cover.

Pipe temperature detection/liquid (TH22)

(6) Remove the connector (CN21) from the indoor controller board, and disconnect the pipe temperature detection/Liquid.

Pipe temperature detection/gas (TH23)

(6) Remove the connector (CN29) from the indoor controller board, and disconnect the pipe temperature detection/Gas with its holder.

8. Removing the fan motor (MF)

(1) Remove the panel.