Mitsubishi Electric City Multi PCFY-P15NGMU-E, City Multi PCFY-P24NGMU-E, City Multi PCFY-P30NGMU-E, City Multi PCFY-P36NGMU-E Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

August 2006

No. OC343

REVISED EDITION-A

[Models]

PCFY-P15NGMU-E
PCFY-P24NGMU-E
PCFY-P30NGMU-E
PCFY-P36NGMU-E

CONTENTS

1. FEATURES ··········································2

2. PART NAMES AND FUNCTIONS ·······4

3. SPECIFICATIONS ·······························6

4. OUTLINES AND DIMENSIONS···········9

5. WIRING DIAGRAM····························13

6.

7. MICROPROCESSOR CONTROL······15

8. TROUBLE SHOOTING······················22

INDOOR UNIT

9. DISASSEMBLY PROCEDURE··········29

10. PARTS LIST······································33

11. RoHS PARTS LIST ··························40

12. OPTIONAL PARTS ··························47

R410A

REFRIGERANT SYSTEM DIAGRAM

R22

Revision:

• RoHS PARTS LISTis added.

• Some descriptions have been
modified.

• Please void OC343.

NOTE:

• This manual describes only

service data of the indoor
units.

• RoHS compliant products

have <G> mark on the spec
name plate.

• For servicing of RoHS

compliant products, refer to
the RoHS PARTS LIST.

··14

1

Unifies the air speed
with the vane

Sending the air to the upper
area of the vane

Prevents the air comes from
cntering from outside the unit

Protruding portion B

Protruding portion A

Flockless vane

Air outlet

B

A

FEATURES

Indoor unit

Models Cooling capacity / Heating capacity

PCFY-P15NGMU-E 15,000 / 17,000 Btu/h
PCFY-P24NGMU-E 24,000 / 27,000 Btu/h
PCFY-P30NGMU-E 30,000 / 34,000 Btu/h
PCFY-P36NGMU-E 36,000 / 40,000 Btu/h

1. EASY TO CLEAN ; FLOCKLESS VANE

With our original air current control mechanism, a flockless vane is
newly adapted.
The flockless vane prevents the condensation on the vane.
By changing the vane to the flockless type, the unit can be cleaned
much easier with mild household detergent.

2. NEW MATERIALS FOR BETTER OIL RESISTANCE

We have changed the materials of grill, filer, fan and fan casing from ABS to P.P. (polypropylene) for better oil
resistance. As a result, oil crazing is cut in half.

3. SIMPLIFIED INSTALLATION WORK (DIRECT SUSPENDING METHOD)

Simplified the installation work by changing the suspending method to the direct suspending method (suspending
the unit directly from the suspension fixture).

In this way, the unit can be attached to the suspension fixture without removing the installation parts off (Only the

side cover is removed). This method is much simpler than the “One-time installation method”.

2

4. IMPROVING EFFICIENCY OF PIPING WORK

Back panel

U-cut

Side panel

L : Liquid pipe
G : Gas pipe
D : Drain pipe

L

L
G
D

D

G

open

open

11

Removed the knockout work by separating the piping
space from the air outlet for efficiency of the piping work.

22

Improved the flexibility by making it possible for
drainage pipe to exit not only from the right side
back but also from the left side back.

Rubber plug

Insulation cover
(attached)

Drain pipe
(purchased locally)

w Knockout work is needed for the top part. When option-

al drain-up machine is installed, the refrigerant pipe

Drain pan

Joint coupler
(attached)

Insulation
cover

Band
(attached)

w Please move the rubber plug for the unit to the right joint

when drainage pipe exits from the left side.

exits out from the top.

5. EASY MAINTENANCE FILTER ; NO MAINTENANCE NECESSARY FOR 2500 HOURS

The new long-life air filter can be used continuously 2500 hours without maintenance (at general office use).

3

2

Air outlet

Intake grille

Air intake

Left/right guide vanes

Change the direction of airflow
from the horizontal blower.

Long-life filter

Removes dust and foreigh matter from air coming in
through the grille (Recommended cleaning interval :
Approx, every 2,500 operating hours)

Up/down guide vanes

Change the direction of airflow from the
vartical blower.

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

MENU

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

Set Temperature 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
door

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 preceding operation
number

Ventilation button
(

Operation button)

To next operation number

PART NAMES AND FUNCTIONS

● Indoor Unit

● Remote controller

● Operation buttons

[PAR-21MAA]

● Once the controls are set, the same operation mode can be repeated
by simply pressing the ON/OFF button.

4

● Display

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

˚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

Identifies the current operation

Shows the operating mode, etc.
* Multilanguage display is sup-

ported.

“Centrally Controlled” indicator

Indicates that operation of the re­mote controller has been prohib­ited 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, shows the time
remaining.

“Sensor” indication

Displayed when the remote controller
sensor is used.

“Locked” indicator

Indicates that remote controller but­tons have been locked.

“Clean The Filter” indicator

Comes on when it is time to clean the
filter.

Timer indicators

The indicator comes on if the corre­sponding timer is set.

Up/Down Air Direction indica­tor

The indicator shows the direc­tion of the outcoming airflow.

“One Hour Only” indicator

Displayed if the airflow is set to
Low and downward during COOL
or DRY mode. (Operation varies
according to model.)
The indicator goes off after one
hour, at which time the airflow
direction also changes.

Room Temperature display

Shows the room temperature.

Louver display

Indicates the action of the swing
louver. Does not appear if the
louver is stationary.

(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.

Caution

● Only the Power on indicator lights when the unit is stopped and power supplied to the unit.

● If you press a button for a feature that is not installed at the indoor unit, the remote controller will display the “Not Available”

If you are using the remote controller to operate multiple indoor units, this message will appear only if the feature is not
present at every unit connected.

● When power is turned ON for the first time, it is normal that “PLEASE WAIT” is displayed on the room temperature
indication (For max. 2minutes). Please wait until this “PLEASE WAIT” indication disappear then start the operation.

message.

5

3

Item

V

·Hz

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

Air filter

Fan ✕ No

Pipe

dimensions

Unit drain pipe size
Noise level W2
Product weight

Exterior

(munsell symbol)

Fan motor

output

External

static pressure

Liquid

side

Gas
side

Heating capacity

F

a

n

Dimensions

Height

Width

Depth

Electric characteristic

Input

Cooling
Heating
Cooling
Heating

Current

PCFY-P15NGMU-E PCFY-P24NGMU-E PCFY-P30NGMU-E PCFY-P36NGMU-E

Single phase 208/230V 60Hz
15,000
17,000

0.08

0.08

0.40

0.40

24,000
27,000

0.09

0.09

0.45

0.45

30,000
34,000

0.23

0.23

1.12

1.12

36,000
40,000

0.27

0.27

1.32

1.32

420-490-570-640
380-470-530-600

0.07

32-34-37-39

75

Unit : Munsell<0.70Y 8.59/0.97>

51-9/16

26-25/32

Cross fin(Aluminum plate fin and copper tube)

Sirocco fan ✕ 3

0

PP honey comb

5/8"
3/8"

1" I.D. (PVC pipe VP-20 connectable)

5/8" / 3/4"(compatible)

3/8"

8-9/32 10-5/8

640-710-810-880
600-670-770-830

0.09

36-38-41-43

82

63-3/4

Sirocco fan ✕ 4
920-990-1120-1230
870-930-1050-1160

0.15

37-39-42-44

95

39-5/8

Sirocco fan ✕ 2
280-350-390-420
250-310-350-380

0.054

1/2"
1/4"

29-33-36-38

60

DRY

Air flow W2

WET

3-1.

SPECIFICATIONS

SPECIFICATIONS

Note 1. Rating conditions

W 2. Air flow and the noise level are indicated as Low - Medium2 - Medium1 - High.

Cooling : Indoor : D.B. 80_F W.B. 67_F
Heating : Indoor : D.B. 70_F

outdoor : D.B. 95_F W.B. 75_F
outdoor : D.B. 47_F W.B. 43_F

6

3-2. ELECTRICAL PARTS SPECIFICATIONS

Parts name

Model

Symbol

TH21

TH22

TH23

FUSE

MF

C1

MV

LEV

TB2

TB5

TB15

250V 6A

OFF 266˚F ±41˚F

(L1, L2, GR) 330V 30A

(M1, M2, S) 250V 20A

(1, 2) 250V 10A

3µF ✕ 440V

Inner-thermostat

4µF ✕ 440V 5µF ✕ 440V 7µF ✕ 440VFan motor capacitor

Vane motor

Linear expansion valve

PCFY-P15NGMU-E PCFY-P24NGMU-E PCFY-P30NGMU-E PCFY-P36NGMU-E

Room temperature
thermistor

Liquid pipe temperature
thermistor

Gas pipe temperature
thermistor

Fuse
(Indoor controller board)

Fan motor
(with inner-thermostat)

Power supply
terminal block

Transmission
terminal block

MA remote controller
terminal block

DC12V Stepping motor drive

port [3.2 (0~2000pulse) EDM-40YGME

4-Pole Output 54W

D09B4P54MS

MP35EA

DC12V

MP42EA

DC12V

4-Pole Output 70W

D09C4P70MS

4-Pole Output 90W

D10C4P90MS

4-Pole Output 150W

D10D4P150MS

DC12V Stepping motor drive

port [5.2 (0~2000pulse) EDM-80YGME

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"

7

3-3. NOISE CRITERION CURVES

90

80

70

60

50

40

30

20

10

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

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PCFY-P15NGMU-E

High

NOTCH

Medium1
Medium2

Low

38

SPL(dB)

36
33
29

LINE

90

80

70

60

50

40

30

20

10

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

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PCFY-P24NGMU-E

High

NOTCH

Medium1
Medium2

Low

39

SPL(dB)

37
34
32

LINE

90

80

70

60

50

40

30

20

10

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

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PCFY-P30NGMU-E

High

NOTCH

Medium1
Medium2

Low

43

SPL(dB)

41
38
36

LINE

90

80

70

60

50

40

30

20

10

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

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PCFY-P36NGMU-E

High

NOTCH

Medium1
Medium2

Low

44

SPL(dB)

42
39
37

LINE

UNIT

About 1.4m

MICROPHONE

CEILING

1m

1m

8

4

9

2-7/16(62) 1-15/16(49)

1-3/4(45)

11-13/16(300)

7/16(11)

Knock out hole for fresh air intake

9

1-1/4(32)6-11/32(161)

(7~8)

1/4~9/32

1-21/32(42) 7-1/16(179)

3-1/8(79)

1-1/2(38)1-1/2(38)

5-5/32(131)

(175)

1-13/16(46)

6-7/8 1/16(1)

3-11/16(86)

5-7/16(138)

6-3/4(171)

10-3/8(263)

13-7/8(352)20-21/32(525)

36-17/32(928)

2-3/4(70)

9-1/32(229)

(150)

23/32(18)

5-29/32

5-1/2(140) 2-3/4(70)

3-1/8(80)12-5/8(320)

3-7/16(87)

5/8(16)

6-3/16(157)

9-1/2(241)

7-15/16(201)

7-3/16(182)

Less than

26-25/32(680)

9-13/16(230)

39-3/8(1000)

11-13/16(300)

10-5/8(270)

or more

6

Allowing clearances

Less than

1/16(1)

(Gap to ceiling)

19-11/16(500)

or more

or more

Ceiling

Rear wall

10(254)

19-29/32(506)

2-7/32(56)

26-25/32(680)

36-5/32(918)

3-17/32(90)6-3/8(161)

Air intake

liquid 1/4F([6.35)

gas 1/2F([12.7)

(Drainage)

38-11/16(983)

3-25/32(96)

7-3/32(180)

8-9/32(210)

3-3/16(81)

39-5/8(1000)

35-19/32(904)

Air outlet

36-23/32(933)

(Suspension bolt pitch)

4

5

8

1

(FRONT VIEW)

2

Electrical box

3

2

7

Electrical box

When electrical box

is pulled down

Ceiling

Refrigerant-pipe connection(liquid pipe side/flared connection)

Knock out hole for upper pipe arrangement

Knock out hole for left drain pipe arrangement

Knock out hole for wiring arrangement

Drainage pipe connection(1-1/32(26mm)I.D.)

Drainage pipe connection(for the left arrangement)

Knock out hole for left drain-piping arrangement

Refrigerant-pipe connection(gas pipe side/flared connection)

1234567

8

NOTES.

1.Use M10 or W3/8 screw for anchor bolt.

2.Please be sure when installing the drain-up machine

(option parts),refrigerant pipe will be only

upper drain pipe arrangement.

OUTLINES AND DIMENSIONS

INDOOR UNIT
PCFY-P15NGMU-E

Unit: in.(mm)

9

PCFY-P24NGMU-E

or more

19-11/16(500)

(Gap to ceiling)

1/16(1)

Unit : in.(mm)

5/8(16)

3-7/16(87)

NOTES.

1.Use M10 or W3/8 screw for anchor bolt.

2.Please be sure when installing the drain-up machine

(option parts),refrigerant pipe will be only

upper drain pipe arrangement.

12-5/8(320) 3-1/8(80)

2-3/4(70)

6-3/16(157)

8-9/32(210)
7-3/32(180)

6

(150)

23/32(18)

5-29/32

5-1/2(140)

(Suspension bolt pitch)

50-13/16(1290)

gas 5/8F([15.88)

liquid 3/8F([9.52)

9-1/2(241)

7-3/16(182)

7/15/16(201)

51-9/16(1310)

47-13/16(1214)

(Drainage)

Allowing clearances

26-25/32(680)

Less than

Rear wall

2-7/32(56)19-29/32(506)

2-3/16(81) 3-25/32(96)

Ceiling

26-25/32(680)

10(254)

Less than

9-13/16(250)

3-17/32(90)6-3/8(161)

or more

or more

48-3/8(1228) 11-13/16(300)51-9/16(1310)10-5/8(270)

1/16(1)

5-5/32(131)

(175)
6-7/8

1-13/16(46)

4

1

5

1-1/2(38)

3-1/8(79)

3-3/8(86)

5-7/16(138)

1-1/2(38)

8

9

Ceiling

(FRONT VIEW)

Electrical box

7/16(11)

2

(6~7)

1/4~9/32

3

1-1/4(32)6-11/32(161)

6-3/4(171)

1-21/32(42) 7-1/16(179)

48-13/16(1240)

10-3/8(263)

11-13/16(300)

16-3/8(416)

3-15/16(100)

2-1/8(54) 2-1/4(57)

20-21/32(525)

2-3/4(70)

48-5/8(1235)

7

Electrical box

When electrical box

is pulled down

10

Air outlet

2

9-1/32(229)

Air intake

Drainage pipe connection(1-1/32(26mm)I.D.)

Drainage pipe connection(for the left arrangement)

Refrigerant-pipe connection(liquid pipe side/flared connection)

Knock out hole for left drain-piping arrangement

Refrigerant-pipe connection(gas pipe side/flared connection)

1234567

Knock out hole for fresh air intake

Knock out hole for upper pipe arrangement

Knock out hole for left drain pipe arrangement

Knock out hole for wiring arrangement

9

8

PCFY-P30NGMU-E

NOTES.

1.Use M10 or W3/8 screw for anchor bolt.

2.Please be sure when installing the drain-up machine

(option parts),refrigerant pipe will be only

upper drain pipe arrangement.

6

12-5/8(320) 3-1/8(80)

2-3/4(70)5-1/2(140)

5/8(16)

3-7/16(87)

gas 5/8F([15.88)

liquid 3/8F([9.52)

7-3/16(182)

7-13/16(198)

8-17/32(217)

Allowing clearances

(Drainage)

9-5/8(245)

Rear wall

10-5/8(270)

(56)

8-5/32(207)

2-7/32

3-3/16(81) 3-25/32(96)

Less than

26-25/32(680)

26-25/32(680)

19-29/32(506)

10(254)

(Gap to ceiling)

1/16(1)

19-11/16(500)

Ceiling

3-17/32(90)6-3/8(160)

Less than

9-13/16(250)

(300)

or more

11-13/16

51-9/16(1310)

or more

10-5/8(270)

Unit: in.(mm)

23/32(18)5-29/32(150)

9-9/32(236)

(196)

1/16(1)

4

1

5

8

7-9/16

3-3/8(86)

5-1/2(140)
1-1/2(38)

9

7/16(11)
2-3/16(55)5-7/8(150)

(FRONT VIEW)

Ceiling

3-21/32(93)

(6~7)

1/4~9/32

Electrical box

2

3

(160)

6-5/16

7-2/32(289)1-21/32(42)

1-25/32(45)

6-3/4(171)

5-7/16(138)

1-1/2(38)

(Suspension bolt pitch)

48-13/16(1240)

13(330)

10-3/8(263)

27-1/16(687)20-21/32(525)

7-7/8(200)

48-5/8(1235)

When electrical

box is pulled

down

50-13/16(1290)

2-3/4(70)

Electrical box

11

7

51-9/16(1310)

47-13/16(1214)

Air outlet

2

9-1/32(229)

48-3/8(1228)

Air intake

Refrigerant-pipe connection(liquid pipe side/flared connection)

Drainage pipe connection(1-1/32(26mm)I.D.)

Drainage pipe connection(for the left arrangement)

Knock out hole for left drain-piping arrangement

3

2

1

Knock out hole for upper pipe arrangement

Refrigerant-pipe connection(gas pipe side/flared connection)

6

5

4

Knock out hole for fresh air intake

Knock out hole for left drain pipe arrangement

Knock out hole for wiring arrangement

9

8

7

RG01N982

PCFY-P36NGMU-E

9

7-7/8(200) 13(330)

5-7/8(150) 2-3/16(55)

7/16(11)

When electrical box

is pulled down

9

Knock out hole for fresh air intake

1-21/32(42)

Electrical box

3-21/32(93)6-5/16(160)

1/4~9/32(6~7)

1/16(1)1-25/32(45) 9-9/32(236)
7-9/16(192)

1-1/2(38) 1-1/2(38)

5-1/2(140)

10-3/8(263)

6-3/4(171)

5-7/16(138)

3-3/8(86)

27-1/16(687)

20-21/32(525)

60-13/16(1545)

9-1/32(229)

2-7/32(56)19-29/32(506)

10(254)

26-25/32(680)

3-3/16(81) 3-25/32(96)

8-5/32(207)

10-5/8(270)

60(1524)

63-3/4(1620)

23/32(18)5-29/32(150)

2-3/4(70)5-1/2(140)

12-5/8(320) 3-1/8(80)

3-7/16(87)

5/8(16)

8-17/32(217)

9-5/8(245)

7-13/16(198)

7-3/16(182)

liquid 3/8F([9.52)

(Drainage)

gas 5/8F/3/4F(Compatible)

([15.88/[19.05)

Less than

26-25/32(680)

10-5/8(270) 11-13/16(300)63-3/8(1620)

or more

1/16(1)

19-11/16(500)

9-13/16(250)

Refrigerant-pipe connection(liquid pipe side/flared connection)

Knock out hole for upper pipe arrangement

Knock out hole for left drain pipe arrangement

Knock out hole for wiring arrangement

1234567

8

Drainage pipe connection(1-1/32(26mm)I.D.)

Drainage pipe connection(for the left arrangement)

Knock out hole for left drain-piping arrangement

Refrigerant-pipe connection(gas pipe side/flared connection)

6

4

8

5

1

3
2

Electrical box

2

7

Air outlet

Air intake

or more

or more

Less than

Ceiling

(FRONT VIEW)

(Suspension bolt pitch)

Allowing clearances

Rear wall

Ceiling

(Gap to ceiling)

NOTES.

1.Use M10 or W3/8 screw for anchor bolt.

2.Please be sure when installing the drain-up machine

(option parts),refrigerant pipe will be only

upper drain pipe arrangement.

7-1/16(239)

2-3/4(70)

60-7/16(1535)

60-29/32(1547)

6-3/8(161) 3-17/32(90)

PCFY-P36NGMU-E

Unit : in.(mm)

12

PCFY-P15NGMU-E PCFY-P24NGMU-E PCFY-P30NGMU-E PCFY-P36NGMU-E

MF

654321 87654321 4321

654321

654321

21 21 21

SW2

(GRN)

VANE
CN6V

(RED)

ADDRESS

CN81

(RED)

ADDRESS

CN42

FUSE
250V

6A

(GRN)

REMOTE

INDICATION

CN52

(WHT)

CENTRALLY

CONTROL

CN51

(WHT)

REMOTO

SWITCH

CN32

(WHT)

LEV
CN60

See fig:w 1

ON

OFF

X1

X4

ZNR

F.C

ON
OFF

SW3 SW4

6

ORN

BLU

WHT

YLW

BRN

RED

654321

12345678910123456 12345

3
2
1

2
1

1
2

1
2

1
2
3

(YLW)

HEATER

CN24

135

135

13 13 13

321

MV

654321

654321

MV

654321

654321

MV

TH21 TH22 TH23

21 21

L1
L2
GR

X4 X1

M1

M2

1
2

8
7
6
5
4
3
2
1

4
3
2
1

48

6

5151 13

(WHT)

DRAIN

CN31

AC208-230V
(RED)
CNSK

DC13.1V

(WHT)

CN2S

(WHT)
LIQUID

CN21

(RED)

INTAKE

CN20

(BLK)
GAS
CN29

(GRN)

VAHE
CN6V

(GRN)
VAHE
CN6V

CN2D
(WHT)

CN3A
(BLU)

CN2M
(BLU)
M-NET

LED1

TRANS

BLU

BLU

BLU

BLK
WHT

ORN

ORN

RED

LED2

CNDK
(RED)

CNP

(BLU)

FAN

(WHT)

CND

(RED)

BLK

BLK

BLU

RED

RED

WHT

WHT

C1

I.B

P.B

TB2

PULL BOX

FUSE(15A)

BREAKER

(15A)

TO NEXT INDDOR UNIT

GRN

/

YLW

POWER SUPPLY
~/N 208-230V 60Hz

TB5

S(SHIELD)

TO OUTDOOR UNIT
BC CONTROLLER
REMOTE CONTROLLER
DC24-30V

TO MA-REMOTE
CONTROLLER
DC8.7-13V

TB15

MODEL
PCFY-P30NGMU-E

MODEL
PCFY-P36NGMU-E

65

BLU

WHT

YLW

ORN

RED

RED

BRN

BLU

WHT

YLW

ORN

A.B

208V 230V

SW5

SW1

SW12

2ND
DIGIT

3RD
DIGIT

SWA

SWC

3
2
1

0

SW11

1ST
DIGIT

0

SW14

CONNECTION
NO.

0

(RED)

ADDRESS

CN43

(RED)

ADDRESS

CN82

ON

OFF

12345678910

ORN

BLU

WHT

YLW

BRN

RED

LEV

PCFY-P15NGMU-E

PCFY-P24NGMU-E

PCFY-P30NGMU-E

PCFY-P36NGMU-E

Models SW2<w1> SW3

ON
OFF

123456

ON

OFF

12345678910

ON

OFF

12345678910

ON
OFF

123456

ON
OFF

123456

ON
OFF

123456

<w2>

Use Copper Supply Wire.

w 2

1

2

Symbol

I. B

Connector Heater
Remote switch
Centrally control
Remote indication
Drain-up machine
Fan phase control
FUSE (6A/250V)
Switch Capacity code
Mode selection
Model selection
Aux.Relay Drain-up machine
Fan motor
Varistor

INDOOR POWER BOARD
Capacitor (fan motor)
Linear expansion valve
Fan motor (with inner thermo)
Vane motor
Thermistor Room temp, detection
(

32°F/15k", 77°F/5.4k"

)
Pipe temp, detection/Iiguid
(

32°F/15k", 77°F/5.4k"

)
Pipe temp, detection/Gas
(

32°F/15k", 77°F/5.4k"

)
Terminal Power supply
block Transmission
MA-remote controller

Legend

Name Symbol Name

P. B
C1
LEV
MF
MV
TH21

TH22

TH23

TB2
TB5
TB15

Indoor controller board
CN24
CN32
CN51
CN52
CNP
F.C
FUSE
SW2
SW3
SW4
X1
X4
ZNR

Symbol

A. B

Switch Mode selection
Voltage selection
Address setting 1st digit
Address setting 2nd digit
Connection No.
Ceiling height Selector
Option Selector

Name

Circuit board Address
SW1
SW5
SW11
SW12
SW14
SWA
SWC

LED on indoor board for service

Meaning

Mark

Main power supply
Power supply for

MA-Remote controller

Main power supply(Indoor unit:208-230V)
power on➝Iamp is Iit

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

Function

LED1
LED2

Note

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, : connector.

6.The setting of the SW2/SW3 dip switches differs in the capacity.
For the detail, refer to the fig:

w

1.

7.Please set the switch SW5 according to the power supply voltage.
Set SW5 to 230V side when the power supply is 230 volts.
When the power supply is 208 volts, set SW5 to 208V side.

5

WIRING DIAGRAM

13

6

REFRIGERANT SYSTEM DIAGRAM

PCFY-P15NGMU-E
PCFY-P24NGMU-E
PCFY-P30NGMU-E
PCFY-P36NGMU-E

Item

Gas pipe

Liquid pipe

Heat exchanger

Strainer (# 50mesh)

Room temperature thermistor TH21

Model

PCFY-P15NGMU-E

{12.7(1/2”)
{6.35(1/4”)

Gas pipe temperature
thermistor TH23

Liquid pipe temperature
thermistor TH22

Linear expansion valve

PCFYP24/P30NGMU-E

{15.88(5/8”)

{9.52(3/8”)

Strainer (#100mesh)

Gas pipe

Flare connection

Liquid pipe

Strainer (#100mesh)

Unit : mm(in.)

PCFY-P36NGMU-E

{15.88(5/8”)/{19.05(3/4”)

(compatible)

{9.52(3/8”)

14

MICROPROCESSOR CONTROL7

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

MENU

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

˚F˚C

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON
OFFHrAFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

Control modes

Control details

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

• Room temperature ] desired temperature + 2°F

···Thermo ON

• Room temperature [ desired temperature

···Thermo OFF

1-2. Frozen prevention control
Detected condition : When the liquid pipe temp. (TH22) is 32°F or less in 16

minutes from compressor 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.

1 Liquid pipe temp. (TH22) turns to be 50°F or above.
2 The condition of the thermo OFF become complete

by thermoregulating, etc.

3 The operation modes become mode other than COOL.
4 The operation stops.

By the remote controller setting (switch of 4 speeds)

2. Fan

1. Thermoregulating
function

Remarks

Type

Fan speed notch

[Low], [Med2], [Med1], [High]

4 speeds

To be continued to the next page

INDOOR UNIT CONTROL
7-1. COOL OPERATION

<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 2°F when the or button is

pressed one time Cooling 67 to 87°F.

15