Mitsubishi PLFY-P20VCM-E2.TH, PLFY-P25VCM-E2.TH, PLFY-P32VCM-E2.TH, PLFY-P40VCM-E2.TH Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

May 2009

No.OCH463

TECHNICAL & SERVICE MANUAL

R410A R407C R22

Indoor unit
[Model names] [Service Ref.]
PLFY-P20VCM-E2	PLFY-P20VCM-E2.TH
PLFY-P25VCM-E2	PLFY-P25VCM-E2.TH
PLFY-P32VCM-E2	PLFY-P32VCM-E2.TH
PLFY-P40VCM-E2	PLFY-P40VCM-E2.TH

Note :

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

•RoHS compliant products have <G> mark on spec name plate.

	CONTENTS
	..........................
	1. SAFETY PRECAUTION			2
	2. PART NAMES AND FUNCTIONS.......... 6
	...................................
	3. SPECIFICATIONS			9
	.................			11
	4. 4-WAY AIR FLOW SYSTEM	............
	5. OUTLINES AND DIMENSIONS			13
	...............................			14
	6. WIRING DIAGRAM
	7. REFRIGERANT SYSTEM DIAGRAM		......	15
	..........................			16
	8. TROUBLESHOOTING
	9. DISASSEMBLY PROCEDURE.............			23
Model name	INDOOR UNIT
indication	PARTS CATALOG (OCB463)

1 SAFETY PRECAUTION

CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R407C

Do not use the existing refrigerant piping.

The old refrigerant and lubricant in the existing piping contains a large amount of chlorine which may cause the lubricant deterioration of the new unit.

Use liquid refrigerant to charge the system.

If gas refrigerant is used to seal the system, the composition of the refrigerant in the cylinder will change and performance may drop.

Use “low residual oil piping”

If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the lubricant will result.

Store the piping to be used indoors during installation and both ends sealed until just before brazing.

(Store elbows and other joints in a plastic bag.)

If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor trouble may result.

Use ESTR , ETHER or HAB as the lubricant to coat flares and flange connection parts.

If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc.

Do not use a refrigerant other than R407C.

If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may cause the lubricant deterioration.

Use a vacuum pump with a reverse flow check valve.

The vacuum pump oil may flow back into the refrigerant cycle and cause the lubricant deterioration.

Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released.

[1]Cautions for service

·After recovering the all refrigerant in the unit, proceed to working.

·Do not release refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant.

2

[2]Refrigerant recharging

(1)Refrigerant recharging process 1Direct charging from the cylinder

·R407C cylinder which is available on the market has a syphon pipe. ·Leave the syphon pipe cylinder standing and recharge it.

(By liquid refrigerant)

Unit

Gravimeter

(2) Recharge in refrigerant leakage case

·After recovering all the refrigerant in the unit, proceed to working. ·Do not release the refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant.

[3] Service tools

Use the below service tools as exclusive tools for R407C refrigerant.

No.	Tool name	Specifications
1	Gauge manifold	· Only for R407C
		· Use the existing fitting SPECIFICATIONS. (UNF7/16)
		· Use high-tension side pressure of 3.43MPa·G or over.
2	Charge hose	· Only for R407C
		· Use pressure performance of 5.10MPa·G or over.
3	Electronic scale
4	Gas leak detector	· Use the detector for R134a or R407C.
5	Adapter for reverse flow check	· Attach on vacuum pump.
6	Refrigerant charge base
7	Refrigerant cylinder	· For R407C	· Top of cylinder (Brown)
		· Cylinder with syphon
8	Refrigerant recovery equipment

3

Cautions for units utilizing refrigerant R410A

Do not use the existing refrigerant piping.

The old refrigerant and lubricant in the existing piping contains a large amount of chlorine which may cause the lubricant deterioration of the new unit.

Use “low residual oil piping”

If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the lubricant will result.

Store the piping to be used indoors during installation and both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.)

If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

Use ester oil, ether oil or alkylbenzene oil (small amount) as the refrigerant oil applied to flares and flange connections.

If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc.

Charge refrigerant from liquid phase of gas cylinder.

If the refrigerant is charged from gas phase, composition change may occur in refrigerant and the efficiency will be lowered.

Do not use refrigerant other than R410A.

If other refrigerant (R22 etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc.

Use a vacuum pump with a reverse flow check valve.

Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc.

Use the following tools specifically designed for use with R410A refrigerant.

The following tools are necessary to use R410A refrigerant.

	Tools for R410A
Gauge manifold		Flare tool
Charge hose		Size adjustment gauge
Gas leak detector		Vacuum pump adaptor
Torque wrench		Electronic refrigerant
		charging scale

Handle tools with care.

If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.

Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released.

4

[1]Cautions for service

(1)Perform service after recovering the refrigerant left in unit completely.

(2)Do not release refrigerant in the air.

(3)After completing service, charge the cycle with specified amount of refrigerant.

(4)When performing service, install a filter drier simultaneously. Be sure to use a filter drier for new refrigerant.

[2]Additional refrigerant charge

When charging directly from cylinder

·Check that cylinder for R410A on the market is syphon type.

·Charging should be performed with the cylinder of syphon standing vertically. (Refrigerant is charged from liquid phase.)

Unit

Gravimeter

[3] Service tools

Use the below service tools as exclusive tools for R410A refrigerant.

No.	Tool name	Specifications
1	Gauge manifold	· Only for R410A
		· Use the existing fitting specifications. (UNF1/2)
		· Use high-tension side pressure of 5.3MPa·G or over.
2	Charge hose	· Only for R410A
		· Use pressure performance of 5.09MPa·G or over.
3	Electronic scale
4	Gas leak detector	· Use the detector for R134a, R407C or R410A.
5	Adapter for reverse flow check	· Attach on vacuum pump.
6	Refrigerant charge base
7	Refrigerant cylinder	· Only for R410A · Top of cylinder (Pink)
		· Cylinder with syphon
8	Refrigerant recovery equipment

5

2 PART NAMES AND FUNCTIONS

Indoor Unit

Horizontal Air Outlet

Sets horizontal airflow automatically during cooling or dehumidifying.

Filter

Remove dust and pollutants from inhaled air.

Grille

Auto Air Swing Vane

Disperses airflow up and down and adjusts the angle of airflow direction.

Air Intake

Inhales air from room.

Wired remote controller

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

Temperature setting buttons
Down
Up
Timer Menu button
(Monitor/Set button)
Mode button (Return button)
		TEMP.
Set Time buttons
Back		MENU	ON/OFF
Ahead	BACK	MONITOR/SET	DAY
Timer On/Off button	PAR-21MAA	CLOCK
(Set Day button)
Opening the
lid

	ON/OFF
	FILTER
	CHECK	TEST
OPERATION	CLEAR

Built-in temperature sensor

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 number

6

Wired remote controller

Display Section

For purposes of this explanation,	Day-of-Week
all parts of the display are shown	Shows the current day of the week.
as lit. During actual operation, only	Time/Timer Display
the relevant items will be lit.
	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.

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 prohibited by a master controller.

“Timer is Off” indicator

Indicates that the timer is off.

Temperature Setting

Shows the target temperature.

TIME SUN MON TUE WED THU FRI SAT
TIMER	Hr	ON
AFTER	AFTER	OFF
ERROR CODE		FUNCTION
°F°C		FILTER
°F°C
		WEEKLY
ONLY1Hr.		SIMPLE
		AUTO OFF

Up/Down Air Direction indicator

Shows the direction of the outcoming airflow.

“One Hour Only” indicator

Displayed 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.

Room Temperature display

Shows the room temperature. The room temperature display range is 8~39 . The display blinks if the temperature is less than 8 or 39 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.

“Sensor” indication

Displayed when the remote controller sensor is used.

“Locked” indicator

Indicates that remote controller buttons 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 corresponding timer is set.

Fan Speed indicator

Shows the selected fan speed.

Ventilation indicator

Appears when the unit is running in Ventilation mode.

Note:

●“PLEASE WAIT” message

This message is displayed for approximately 3 minutes when power is supplied to the indoor unit or when the unit is recovering from a power failure.

●“NOT AVAILABLE” message

This message is displayed if an invalid button is pressed (to operate a function that the indoor unit does not have).

If a single remote controller is used to operate multiple indoor units simultaneously that are different types, this message will not be displayed as far as any of the indoor units is equipped with the function.

7

Wireless remote controller

display

OPERATION MODE display

Operation mode display indicates which operation mode is in effect.

display

The vertical direction of air flow is indicated.

display

FAN SPEED display indicates which fan speed has been selected.

ON/OFF button

The unit is turned ON and OFF alternately each time the button is pressed.

FAN SPEED SELECT button

Used to change the fan speed.

MODE SELECT button

Used to switch the operation mode between cooling, drying, fan, heating and auto mode.

In case the outdoor unit is cool only type, the heating and auto mode are not available.

CHECK-TEST RUN button

Only press this button to perform an inspection check or test operation. Do not use it for normal operation.

VANE CONTROL button

Used to change the air flow

CHECK TESTRUN display

CHECK and TEST RUN display indicate that the unit is being checked or test-run.

MODELSELECT display

Blinks when model is selected.

CHECK TESTRUN

MODELSELECT °C

AMPM

AMPM

NOT AVAILABLE

ON/OFF TEMP

	FAN	AUTO STOP
MODE	VANE	AUTO START
CHECK	LOUVER	h
TEST RUN		min
SET	RESET CLOCK

display

Lights up while the signal is transmitted to the indoor unit when the button is pressed.

display

SET TEMP. display indicates the set desired temperature.

CLOCK display

Displays the current time.

TIMER display

Displays when in timer operation or when setting timer.

“ ” “ ” display

Displays the order of timer operation.

“” “” display

Displays whether timer is on or off.

button

SET TEMPERATURE button sets any desired room temperature.

TIMER CONTROL buttons

AUTO STOP (OFF timer): when this switch is set, the air conditioner will be automatically stopped at the preset time.

AUTO START (ON timer): when this switch is set, the air conditioner will be automatically started at the preset time.

h and min buttons

Buttons used to set the “hour and minute” of the current time and timer settings.

LOUVER button

Changes left/right airflow direction.

(Not available for this model.)

CLOCK button

RESET button

SET button

8

3

SPECIFICATIONS

3-1. SPECIFICATIONS

Model

PLFY-P20VCM-E2

PLFY-P25VCM-E2

PLFY-P32VCM-E2

PLFY-P40VCM-E2

Power source

Single phase 220-230-240V 50Hz

Cooling capacity

1

kW

2.2

2.8

3.6

4.5

(Nominal)

1

kcal / h

1,900

2,400

3,100

3,900

1

Btu / h

7,500

9,600

12,300

15,400

2

kcal / h

2,000

2,500

3,150

4,000

Power input

kW

0.05

0.05

0.06

0.06

Current input

A

0.23

0.23

0.28

0.28

Heating capacity

3

kW

2.5

3.2

4.0

5.0

(Nominal )

3

kcal / h

2,200

2,800

3,400

4,300

3

Btu / h

8,500

10,900

13,600

17,100

Power input

kW

0.05

0.05

0.06

0.06

Current input

A

0.23

0.23

0.28

0.28

External finish

Unit: Galvanized sheets with grey heat insulation

External dimension H x W x D

mm

208 × 570 × 570

208 × 570 × 570

208 × 570 × 570

208 × 570 × 570

in.

8-1/4" × 22-1/2" × 22-1/2"

8-1/4" × 22-1/2" × 22-1/2"

8-1/4" × 22-1/2" × 22-1/2"

8-1/4" × 22-1/2" × 22-1/2"

Net weight

kg (lb)

15.5 (35)

15.5 (35)

17 (38)

17 (38)

Decoration panel

Model

SLP-2AAW or SLP-2ALW

SLP-2AAW or SLP-2ALW

SLP-2AAW or SLP-2ALW

SLP-2AAW or SLP-2ALW

External finish

White Munsell(6.4Y 8.9/0.4)

Dimension

mm

20 × 650 × 650

20 × 650 × 650

20 × 650 × 650

20 × 650 × 650

H × W × D

in.

13/16" × 25-5/8" × 25-5/8"

13/16" × 25-5/8" × 25-5/8"

13/16" × 25-5/8" × 25-5/8"

13/16" × 25-5/8" × 25-5/8"

Net Weight

kg (lb)

3 (7)

3 (7)

3 (7)

3 (7)

Cord heater

kW

0.015

0.015

0.015

0.015

Heat exchanger

Cross fin (Aluminum fin and copper tube)

FAN

Type × Quantity

Turbo fan × 1

External static press.

0Pa (0mmH2O)

0Pa (0mmH2O)

0Pa (0mmH2O)

0Pa (0mmH2O)

Motor type

Single phase induction motor

Motor output

kW

0.011

0.015

0.02

0.02

Driving mechanism

Direct-driven by motor

Airflow rate

m3 / min

8-9-10

8-9-10

8-9-11

8-9-11

(Low-Mid-High)

L / s

133-150-167

133-150-167

133-150-183

133-150-183

cfm

283-318-353

283-318-353

283-318-388

283-318-388

Noise level (Low-Mid-High)

dB <A>

28-31-35

29-31-37

29-33-38

30-34-39

(measured in anechoic room)

Insulation material

Polyethylene foam

Air filter

PP honeycomb fabric (long life type)

Protection device

Fuse

Refrigerant control device

LEV

Connectable outdoor unit

R410A, R407C, R22 CITY MULTI

Diameter of

Liquid

mm (in.)

ø6.35 (ø1/4") Flare

ø6.35 (ø1/4") Flare

ø6.35 (ø1/4") Flare

ø6.35 (ø1/4") Flare

refrigerant pipe

Gas

mm (in.)

ø12.7 (ø1/2") Flare

ø12.7 (ø1/2") Flare

ø12.7 (ø1/2") Flare

ø12.7 (ø1/2") Flare

Field drain pipe size

mm (in.)

O.D. 32mm (1-1/4") (PVC pipe VP-25 connectable)

Standard

Document

Installation manual, Instruction book

attachment

Accessory

Drain hose I.D. 32mm (1-1/4"), Wireless junction cable

Remark

Optional parts

Decoration panel : SLP-2AAW or SLP-2ALW

*PLFY-P-VCM-E2 should use together with Decoration panel.

	Installation	Details on foundation work, duct work, insulation work, electrical wiring, power source switch, and other items shall be referred to
		the Installation Manual.
Note :	1 Nominal cooling condition		2 Nominal cooling condition	3 Nominal heating condition		Unit converter
Indoor :	27˚CDB/19˚CWB (81˚FDB/66˚FWB)		27˚CDB/19.5˚CWB (81˚FDB/67˚FWB)	20˚CDB (68˚FDB)	kcal	= kW × 860
Outdoor :	35˚CDB (95˚FDB)		35˚CDB (95˚FDB)	7˚CDB/6˚CWB (45˚FDB/43˚FWB)
					Btu/h = kW × 3,412
Pipe length :	7.5 m (24-9/16 ft)		5 m (16-3/8 ft)	7.5 m (24-9/16 ft)
					cfm	= m3/min x 35.31
Level difference :	0 m (0 ft)		0 m (0 ft)	0 m (0 ft)
* Nominal conditions 1, 3 are subject to JIS B8615-1.					lb	= kg / 0.4536
* Due to continuing improvement, above specification may be subject to change without notice.

9