Mitsubishi Electric City Multi PCFY-P15NGMU-E Operating manual

TECHNICAL & SERVICE MANUAL

CONTENTS

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

2. PART NAMES AND FUNCTIONS·······4

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

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

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

REFRIGERANT SYSTEM DIAGRAM

··14

7. MICROPROCESSOR CONTROL······15

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

9. DISASSEMBLY PROCEDURE··········29

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

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

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

PCFY-P15NGMU-E

PCFY-P24NGMU-E

PCFY-P30NGMU-E

PCFY-P36NGMU-E

INDOOR UNIT

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

August 2006

R410A R22

No. OC343

REVISED EDITION-A

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.

Revision:

• RoHS PARTS LIST is added.

• Some descriptions have been

modified.

• Please void OC343.

[Models]

OC343A-1.qxp 06.8.2 11:31 AM Page 1

1FEATURES

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

Indoor unit

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”.

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

OC343A-1.qxp 06.8.2 11:31 AM Page 2

4. IMPROVING EFFICIENCY OF PIPING WORK

11Removed the knockout work by separating the piping

space from the air outlet for efficiency of the piping work.

wKnockout work is needed for the top part. When option-

al drain-up machine is installed, the refrigerant pipe

exits out from the top.

wPlease move the rubber plug for the unit to the right joint

when drainage pipe exits from the left side.

22Improved 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.

Back panel

U-cut

Side panel

L : Liquid pipe

G : Gas pipe

D : Drain pipe

open open

Drain pan Rubber plug

Insulation cover

(attached)

Drain pipe

(purchased locally)

Band

(attached)

Insulation

cover

Joint coupler

(attached)

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).

OC343A-1.qxp 06.8.2 11:31 AM Page 3

2PART NAMES AND FUNCTIONS

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.

● Remote controller

● Operation buttons

●Indoor Unit

[PAR-21MAA]

● Once the controls are set, the same operation mode can be repeated

by simply pressing the ON/OFF button.

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

Set Temperature buttons

Down

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

OC343A-1.qxp 06.8.2 11:31 AM Page 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

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

OFF

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 re-

mote 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, shows the time

remaining.

“Sensor” indication

Displayed when the remote controller

sensor is used.

“Locked” indicator

Indicates that remote controller but-

tons 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 corre-

sponding timer is set.

Up/Down Air Direction indica-

tor

The indicator shows the direc-

tion 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”

message.

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.

OC343A-1.qxp 06.8.2 11:31 AM Page 5

3SPECIFICATIONS

3-1. SPECIFICATIONS

Note 1. Rating conditions

Cooling : Indoor : D.B. 80

F W.B. 67

outdoor : D.B. 95

F W.B. 75

Heating : Indoor : D.B. 70

outdoor : D.B. 47

F W.B. 43

W2. Air flow and the noise level are indicated as Low - Medium2 - Medium1 - High.

Item

V·Hz

Btu/h

—

in.

—

CFM

—

in.

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

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

0.40

24,000

27,000

0.09

0.45

30,000

34,000

0.23

1.12

36,000

40,000

0.27

1.32

420-490-570-640

380-470-530-600

0.07

32-34-37-39

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

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

63-3/4

Sirocco fan ✕4

920-990-1120-1230

870-930-1050-1160

0.15

37-39-42-44

39-5/8

Sirocco fan ✕2

280-350-390-420

250-310-350-380

0.054

1/2"

1/4"

29-33-36-38

DRY

Air flow W2

WET

OC343A-1.qxp 06.8.2 11:31 AM Page 6

3-2. ELECTRICAL PARTS SPECIFICATIONS

Parts name

Model Symbol

TH21

TH22

TH23

FUSE

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"

OC343A-1.qxp 06.8.2 11:31 AM Page 7

3-3. NOISE CRITERION CURVES

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

SPL(dB)

LINE

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

SPL(dB)

LINE

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

SPL(dB)

LINE

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

SPL(dB)

LINE

UNIT

About 1.4m

MICROPHONE

CEILING

OC343A-1.qxp 06.8.2 11:31 AM Page 8

OUTLINES AND DIMENSIONS

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

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

Allowing clearances

Less than

1/16(1)

(Gap to ceiling)

19-11/16(500)

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)

(FRONT VIEW)

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)

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.

Unit: in.(mm)

INDOOR UNIT

PCFY-P15NGMU-E

OC343A-1.qxp 06.8.2 11:31 AM Page 9

11-13/16(300)

3-15/16(100)

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

7/16(11)

Knock out hole for fresh air intake

(6~7)

1/4~9/32

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

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

20-21/32(525)

1-1/2(38)

3-1/8(79)

10-3/8(263)

6-3/4(171)

5-7/16(138)

3-3/8(86)

6-7/8

(175)

1-13/16(46)

5-5/32(131)

1/16(1)

1-1/2(38)

16-3/8(416)

48-5/8(1235)

2-3/4(70)

23/32(18)

5-1/2(140)

(150)

5-29/32

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

48-13/16(1240)

50-13/16(1290)

47-13/16(1214)

51-9/16(1310)

7-3/32(180)

8-9/32(210)

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

26-25/32(680) 2-7/32(56)19-29/32(506)

10(254)

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

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

or more

26-25/32(680)

Less than

3-7/16(87)

5/8(16)

6-3/16(157)

or more

Ceiling

Rear wall

Allowing clearances

Ceiling

Electrical box (FRONT VIEW)

When electrical box

is pulled down

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.

(Suspension bolt pitch)

Air outlet

Air intake

9-1/32(229)

2-3/4(70)

Electrical box

gas 5/8F([15.88)

liquid 3/8F([9.52)

(Drainage)

7-3/16(182)

7/15/16(201)

9-1/2(241)

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)

9-13/16(250)

19-11/16(500)

(Gap to ceiling)

or more

1/16(1)

Less than

Unit : in.(mm)

PCFY-P24NGMU-E

OC343A-1.qxp 06.8.2 11:31 AM Page 10

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