Mitsubishi PEFY-P20VMM-E, PEFY-P25VMM-E, PEFY-P32VMM-E, PEFY-P40VMM-E, PEFY-P50VMM-E Service Manual

2004

Air-Conditioners For Building Application

TECHNICAL & SERVICE MANUAL

Series PEFY Ceiling Concealed

<Indoor unit>

Models PEFY-P20VMM-E,PEFY-P71VMM-E PEFY-P25VMM-E,PEFY-P80VMM-E PEFY-P32VMM-E,PEFY-P100VMM-E PEFY-P40VMM-E,PEFY-P125VMM-E PEFY-P50VMM-E,PEFY-P140VMM-E PEFY-P63VMM-E

CONTENTS

SAFETY PRECAUTIONS ·························1

1. FEATURES············································3

2. PART NAMES AND FUNCTIONS ········4

3. SPECIFICATION ···································6

4. OUTLINES AND DIMENSIONS············8

5. WIRING DIAGRAM ·····························10

6. REFRIGERANT SYSTEM DIAGRAM····12

7. TROUBLE SHOOTING························13

8. DISASSEMBLY PROCEDURE ···········18

INDOOR UNIT

For use with R410A & R407C & R22

SAFETY PRECAUTIONS

1.Before installation and electric work

sBefore installing the unit, make sure you read all the “Safety precautions”.

sThe “Safety precautions” provide very important points regarding safety. Make sure you follow them.

sThis equipment may not be applicable to EN61000-3- 2: 1995 and EN61000-3-3: 1995.

sThis equipment may cause the adverse effect on the same supply system.

sPlease report to or take consent by the supply authority before connection to the system.

Symbols used in the text

Warning:

Describes precautions that should be observed to prevent danger of injury or death to the user.

Caution:

Describes precautions that should be observed to prevent damage to the unit.

Symbols used in the illustrations

: Indicates an action that must be avoided.

: Indicates that important instructions must be followed.

: Indicates a part which must be grounded.

: Indicates that caution should be taken with rotating parts. (This symbol is displayed on the main unit label.) <Color: Yellow>

: Beware of electric shock (This symbol is displayed on the main unit label.) <Color: Yellow>

Warning:

Carefully read the labels affixed to the main unit.

Warning:

•Ask the dealer or an authorized technician to install the air conditioner.

-Improper installation by the user may result in water leakage, electric shock, or fire.

•Install the air unit at a place that can withstand its weight.

-Inadequate strength may cause the unit to fall down, resulting in injuries.

•Use the specified cables for wiring. Make the connections securely so that the outside force of the cable is not applied to the terminals.

-Inadequate connection and fastening may generate heat and cause a fire.

•Prepare for typhoons and other strong winds and earthquakes and install the unit at the specified place.

-Improper installation may cause the unit to topple and result in injury.

•Always use an air cleaner, humidifier, electric heater, and other accessories specified by Mitsubishi Electric.

-Ask an authorized technician to install the accessories. Improper installation by the user may result in water leakage, electric shock, or fire.

•Never repair the unit. If the air conditioner must be repaired, consult the dealer.

-If the unit is repaired improperly, water leakage, electric shock, or fire may result.

•Do not touch the heat exchanger fins.

-Improper handling may result in injury.

•If refrigerant gas leaks during installation work, ventilate the room.

-If the refrigerant gas comes into contact with a flame, poisonous gases will be released.

•Install the air conditioner according to this Installation Manual.

-If the unit is installed improperly, water leakage, electric shock, or fire may result.

•Have all electric work done by a licensed electrician according to “Electric Facility Engineering Standard” and “Interior Wire Regulations”and the instructions given in this manual and always use a separate circuit.

-If the power source capacity is inadequate or electric work is performed improperly, electric shock and fire may result.

•Keep the electric parts away from water (washing water etc.).

-It might result in electric shock, catching fire or smoke.

•Securely install the cover of control box and the panel.

-If the cover and panel are not installed properly,dust or water may enter the outdoor unit and fire or electric shock may result.

•When installing and moving the air conditioner to another site, do not charge it with a refrigerant differen fromt the refrigerant specified on the unit.

-If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may be damaged.

•If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit even if the refrigerant should leak.

-Consult the dealer regarding the appropriate measures to prevent the safety limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, hazards due to lack of oxygen in the room could result.

•When moving and reinstalling the air conditioner, consult the dealer or an authorized technician.

-If the air conditioner is installed improperly, water leakage, electric shock, or fire may result.

•After completing installation work, make sure that refrigerant gas is not leaking.

-If the refrigerant gas leaks and is exposed to a fan heater, stove, oven, or other heat source, it may generate noxious gases.

•Do not reconstruct or change the settings of the protection devices.

-If the pressure switch, thermal switch, or other protection device is shorted and operated forcibly, or parts other than those specified by Mitsubishi Electric are used, fire or explosion may result.

•To dispose of this product, consult your dealer.

•Do not use a leak detection additive.

1

2.Precautions for devices that use R410A or R407C refrigerant

Caution:

•Do not use the existing refrigerant piping.

-The old refrigerant and refrigerator oil in the existing piping contains a large amount of chlorine which may cause the refrigerator oil of the new unit to deteriorate.

•Use refrigerant piping made of phosphorus deoxidized copper. In addition, be sure that the inner and outer surfaces of the pipes are clean and free of hazardous sulphur, oxides, dust/dirt, shaving particles, oils, moisture, or any other contaminant.

-Contaminants on the inside of the refrigerant piping may cause the refrigerant residual oil to deteriorate.

•Store the piping to be used during installation indoors and keep both ends of the piping 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 ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections.

-The refrigerator oil will degrade if it is mixed with a large amount of mineral oil.

•Use liquid refrigerant to fill 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.

•Do not use a refrigerant other than R410A or R407C.

-If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may cause the refrigerator oil to deteriorate.

•Use a vacuum pump with a reverse flow check valve.

-The vacuum pump oil may flow back into the refrigerant cycle and cause the refrigerator oil to deteriorate.

•Do not use the following tools that are used with conventional refrigerants.

(Gauge manifold, charge hose, gas leak detector, reverse flow check valve, refrigerant charge base, vacuum gauge, refrigerant recovery equipment.)

-If the conventional refrigerant and refrigerator oil are mixed in the R410A or R407C, the refrigerant may deteriorated.

-If water is mixed in the R410A or R407C, the refrigerator oil may deteriorate.

-Since R410A or R407C does not contain any chlorine, gas leak detectors for conventional refrigerants will not react to it.

•Do not use a charging cylinder.

-Using a charging cylinder may cause the refrigerant to deteriorate.

•Be especially careful when managing the tools.

-If dust, dirt, or water gets in the refrigerant cycle, the refrigerant may deteriorate.

2

1 FEATURES

Series PEFY Ceiling Concealed

Indoor unit

Cooling capacity/Heating capacity

Models

kW

PEFY-P20VMM-E	2.2/	2.5
PEFY-P25VMM-E	2.8/	3.2
PEFY-P32VMM-E	3.6/	4.0
PEFY-P40VMM-E	4.5/	5.0
PEFY-P50VMM-E	5.6/	6.3
PEFY-P63VMM-E	7.1/	8.0
PEFY-P71VMM-E	8.0/	9.0
PEFY-P80VMM-E	9.0/ 10.0
PEFY-P100VMM-E	11.2/	12.5
PEFY-P125VMM-E	14.0/	16.0
PEFY-P140VMM-E	16.0/ 18.0

3

2 PART NAMES AND FUNCTIONS

● Indoor (Main) Unit

[In case of rear inlet]

[In case of bottom inlet]

Air inlet

Air inlet

Air outlet

Air outlet

● Remote controller [PAR-20MAA]

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

● Operation buttons

1

2

3

	CENTRALLY CONTROLLED		1Hr.
		ON OFF		˚C
	CHECK	CLOCK
				FILTER
	˚C			CHECK MODE
STAND BY		ERROR CODE		TEST RUN
			NOT AVAILABLE	FUNCTION
DEFROST
	TEMP.			ON/OFF

B

FILTER

A

CHECK TEST

0

PAR-20MAA

TIMER SET

C

4 5 6 8 7 9

1	[Room temperature adjustment] Button	7	[Up/down airflow direction] Button
2	[Timer/continuous] Button	8	[Ventilation] Button
3	[Selecting operation] Button	9	[Checking/built-in] Button
4	[Time selection] Button	0	[Test run] Button
	[Time-setting] Button	A [Filter] Button
5	[Louver] Button	B [ON/OFF] Button
6	[Fan speed adjustment] Button	C Position of built-in room temperature sensor

•Never expose the remote controller to direct sunlight. Doing so can result in the erroneous measurement of room temperature.

•Never replace any obstacle around the lower right-hand section of the remote controller. Doing so can result in the erroneous measurement of room temperature.

4

● Display

D C B A U T Q S

		CENTRALLY CONTROLLED		1Hr.
E			ON OFF	˚C
		CHECK	CLOCK
				FILTER
		˚C		CHECK MODE
F	STAND BY		ERROR CODE	TEST RUN
				NOT AVAILABLE FUNCTION
	DEFROST
		TEMP.		ON/OFF

G H I KLJ

(A)Current time/Timer

(B)Centralized control

(C)Timer ON

(D)Abnormality occurs

(E) Operation mode: COOL, DRY, AUTO,FAN,HEAT

(F)Preparing for Heating mode

(G)Defrost mode

(H)Set temperature

(I)Power ON

(J)Louver

(K)Not available function

(L)Ventilation

(M)Function setting mode

(N)Test run mode

(O)Error check mode

(P)Filter sign

(Q)Set effective for 1 hr.

(R)Sensor position

(S)Room temperature

(T)Airflow

(U)Fan speed

R

P

O N M

5

3 SPECIFICATION

3-1. Specification

Item		Model			PEFY-P20	PEFY-P25	PEFY-P32	PEFY-P40	PEFY-P50	PEFY-P63
					VMM-E	VMM-E	VMM-E	VMM-E	VMM-E	VMM-E
Power source		Voltage		~V			220-240
		Frequency		Hz				50
Cooling capacity				kW	2.2	2.8	3.6	4.5	5.6	7.1
Heating capacity				kW	2.5	3.2	4.0	5.0	6.3	8.0
Power consumption		Cooling		kW	0.15		0.17	0.19	0.20	0.22
		Heating		kW	0.15		0.17	0.19	0.20	0.22
Current		Cooling		A	0.73		0.81	0.92	0.98	1.07
		Heating		A	0.73		0.81	0.92	0.98	1.07
External finish							Galvanized steel plate
		Height		mm			295
Dimension		Width		mm		815		935		1,175
		Depth		mm			700
Net weight				kg		27			33	42
Heat exchanger						Cross fin( Alminium plate fin and copper tube)
		Type				Sirocco fan 1			Sirocco fan 2
Fan		Airflow rate		m3/min	6.0-7.2-8.5		7.5-9.0-10.5	10.0-12.0-14.0 12.0-14.5-17.0 13.5-16.2-19.0
		(Low-[Middle]-High)
		External static pressure		Pa			30/50/100
Motor		Type				Single phase induction motor
		Output		kW			0.075			0.078
Air filter							P.P. honeycomb
		Gas(Flare)		mm		ø12.7			ø12.7(R410A)	ø15.88
Refrigerant									ø15.88(R22,R407C)
pipe dimension		Liquid(Flare)		mm		ø6.35			ø 6.35(R410A)	ø9.52
									ø 9.52(R22,R407C)
Drain pipe dimension							R1(External thread)
Noise level (Low-[Middle]-High)				dB	27-30-32		28-32-35	31-34-37	31-35-38	31-35-38

Note:1

Note:1

Note:2

Item

Model

PEFY-P71

PEFY-P80 PEFY-P100 PEFY-P125 PEFY-P140

VMM-E

VMM-E

VMM-E

VMM-E

VMM-E

Power source

Voltage

~V

220-240

Frequency

Hz

50

Cooling capacity

kW

8.0

9.0

11.2

14.0

16.0

Heating capacity

kW

9.0

10.0

12.5

16.0

18.0

Power consumption

Cooling

kW

0.25

0.25

0.29

0.40

0.42

Heating

kW

0.25

0.25

0.29

0.40

0.42

Current

Cooling

A

1.15

1.34

1.90

1.95

Heating

A

1.15

1.34

1.90

1.95

External finish

Galvanized steel plate

Height

mm

295

325

Dimension

Width

mm

1,175

1,415

1,715

Depth

mm

700

740

Net weight

kg

42

62

65

70

Heat exchanger

Cross fin( Alminium plate fin and copper tube)

Type

Sirocco fan 2

Fan

Airflow rate

m3/min

14.5-18.0-21.0

23.0-33.0 28.0-40.0

29.5-42.0

(Low-[Middle]-High)

External static pressure

Pa

30/50/100

50/130

Motor

Type

Single phase induction motor

Output

kW

0.078

0.200

0.280

Air filter

P.P. honeycomb

Refrigerant

Gas(Flare)

mm

ø15.88

ø15.88(R410A), ø19.05(R22,R407C)

pipe dimension

Liquid(Flare)

mm

ø9.52

Drain pipe dimension

R1(External thread)

Noise level(Low-[Middle]-High)

dB

32-36-39

40-44

42-45

Note: 1.Cooling / Heating capacity indicates the maximum value at operation under the following condition.

Cooling

:Indoor

27°CDB/19.0°CWB

Heating

:Indoor

20°C

:Outdoor 35°CDB

:Outdoor 7°CDB/6°CWB

2.The external static pressure is set to 50Pa at factory shipment.

Note:1

Note:1

Note:2

6

3-2. Electrical parts specifications

	Model		PEFY-P20	PEFY-P25 PEFY-P32	PEFY-P40 PEFY-P50 PEFY-P63 PEFY-P71 PEFY-P80		PEFY-P100	PEFY-P125 PEFY-P140
	Parts	Symbol
			VMM-E	VMM-E VMM-E	VMM-E VMM-E	VMM-E VMM-E VMM-E	VMM-E	VMM-E VMM-E
	name
	Transformer	T		(Primary) 50/60Hz 220-240V (Secondry) (18.4V 1.7A)
	Room		Resistance 0˚C/15kΩ ,10˚C/9.6kΩ ,20˚C/6.3kΩ ,25˚C/5.4kΩ ,30˚C/4.3kΩ ,40˚C/3.0kΩ
	temperature	TH21
	ther mistor
	Liquid pipe	TH22	Resistance 0˚C/15kΩ ,10˚C/9.6kΩ ,20˚C/6.3kΩ ,25˚C/5.4kΩ ,30˚C/4.3kΩ ,40˚C/3.0kΩ
	ther mistor
	Gas pipe	TH23	Resistance 0˚C/15kΩ ,10˚C/9.6kΩ ,20˚C/6.3kΩ ,25˚C/5.4kΩ ,30˚C/4.3kΩ ,40˚C/3.0kΩ
	ther mistor
	Fuse
	(Indoor con -	FUSE			250V	6.3A
	troller board)

Fan motor

(with InnerMF1,2 ther mostat)

Innerthermostat

(Fan motor)

	Fan	motor	C1
	capacitor

Linear

expansion valve LEV

Power supply

TB2

terminal bed

Transmission	TB5
terminal bed	TB15

	4-pole Output 75W	4-pole	4-pole Output 78W	4-pole	4-pole
				Output	Output
		Output 75W
	D104P75MW		D10CP95MW	200W	280W
		D104P85MW
				NS-100VM-1	NS-125VM-1

OFF 130˚C ± 5

ON 90˚C ± 20

6.0µF X 440V X 1pcs

DC12V Stepping motor drive port

dimension ø3.2 (0~2000pulse)

(L,N, ) 330V 30A

	(M1,M2,S)	300V 10A
	(1,2)

8.0µF X 440V 16µF X 440V X 1pcs X 2pcs

	DC12V Stepping motor drive	DC12V
		Steppingmotor drive

port dimension ø5.2 (0~2000pulse) port dimension ø6.4 (0~2000pulse)

7