Mitsubishi PUH-1VKA.UK, PUH-1.6VKA(1).UK, PUH-2VKA(1).UK, PUH-2.5VKA(1).UK, PUH-3VKA(1).UK Service Manual

1996

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

No.OC086

REVISED EDITION-B

TECHNICAL & SERVICE MANUAL

Outdoor unit
[Model names]	[Service Ref.]

PUH-1VKA	PUH-1VKA.UK
PUH-1.6VKA	PUH-1.6VKA.UK,PUH-1.6VKA .UK
	1
PUH-2VKA	PUH-2VKA.UK,PUH-2VKA1.UK
PUH-2.5VKA	PUH-2.5VKA.UK,PUH-2.5VKA .UK
	1
PUH-3VKA	PUH-3VKA.UK,PUH-3VKA1.UK
PUH-3YKA	PUH-3YKA.UK,PUH-3YKA1.UK
PUH-4YKSA	PUH-4YKSA.UK,4YKSA1.UK
PUH-5YKSA	PUH-5YKSA.UK,PUH-5YKSA1.UK
PUH-6YKSA	PUH-6YKSA.UK,PUH-6YKSA1.UK

CONTENTS

	1.	TECHNICAL CHANGES ··································2
	2.	COMBINATION OF INDOOR AND OUTDOOR UNITS ····2
	3.	PART NAMES AND FUNCTIONS ···················3
	4.	DATA ··················································· ·············4
	5.	OUTLINES AND DIMENSIONS ·······················5
	6.	WIRING DIAGRAM ··········································9
	7.	REFRIGERANT SYSTEM DIAGRAM···············21
	8.	DISASSEMBLY PROCEDURE ······················23
	9.	PARTS LIST ··················································· 25
OUTDOOR UNIT	10. OPTIONAL PARTS ························Back cover
PUH-3KA type

The Slim Line.

From Mitsubishi Electric.

Revision

•Parts List has been partially modified.

•Please destroy OC086 SECOND EDITION.

1 TECHNICAL CHANGES

PUH-1VKA.UK

PUH-1.6VKA.UK PUH-1.6VKA1.UK

PUH-2VKA.UK		PUH-2VKA	1	.UK

PUH-2.5VKA.UK PUH-2.5VKA1.UK

PUH-3VKA.UK		PUH-3VKA	1	.UK
PUH-3YKA.UK		PUH-3YKA	1	.UK

PUH-4YKSA.UK PUH-4YKSA1.UK

PUH-5YKSA.UK PUH-5YKSA1.UK

PUH-6YKSA.UK PUH-6YKSA1.UK

1.The contactor have changed. (PUH-1.6/2/2.5/3VKA1,5/6YKSA1.UK)

2.Following Parts have changed in order to comply with LVD standard. (All models with small one)

1Terminal block

2Controller board (Including the fuse)

Please reter to the parts list for the new parts number

3.Color of lead wire for N phase has changed from BLK BLU. Color of lead wire for L3 phase has changed from BLU BLK.

4. 4-way valve have changed. (PUH-1.6/2/2.5/3VKA1,6YKSA1.UK)

2 COMBINATION OF INDOOR AND OUTDOOR UNITS

	Indoor unit					Outdoor unit
	Models	Service	1	1.6	2	2.5		3	4	5	6
		Manual No.	VKA	VKA,VKA1	VKA	VKA,VKA1	VKA,VKA1 YKA,YKA1 YKSA,YKSA1 YKSA,YKSA1 YKSA,YKSA1
	PLH-GKH(S)B.UK	OC091	—	—
	PLH-GK(S)B.UK		—	—						—	—
	PLH-GKH(S)B	OC096	—	—	—	—
	PLH-GK(S)B		—	—	—	—				—	—
	PLH-KKHB	OC099	—				—	—	—	—	—
	PLH-KKB	OC098	—	—			—	—	—	—	—
	PCH-GKH(S)A	OC094	—	—
	PCH-GK(S)A		—	—						—	—
	PEH-EKH(S)A	OC068	—	—	—
	PEH-EK(S)A		—	—	—
	PKH-FKH(S)A	OC069	—							—	—
	PKH-FK(S)A		—	—						—	—
	PKH-EKA	OC070		—	—	—	—	—	—	—	—
	PSH-GJH	OC075	—	—	—	—
	PSH-GJH(S)		—	—	—	—
	PEHD-EKH(S)A.UK	–	—	—	—	—					—
	PEHD-EK(S)A.UK		—	—	—	—					—

2

3 PART NAMES AND FUNCTIONS

• Outdoor unit

Air outlet	Air outlet
(Expels warm air during cooling)

Air intake

Air intake

PUH-1VKA.UK	PUH-2.5VKA.UK,2.5VKA1.UK
1.6VKA.UK,1.6VKA1.UK	3VKA.UK,3VKA1.UK
2VKA.UK,2VKA1·UK	3YKA.UK,3YKA1.UK

		Air outlet
	Air outlet
	Air intake
	Air intake
	PUH-4YKSA·UK	PUH-5YKSA·UK
		5YKSA1·UK
	4YKSA1·UK
		6YKSA·UK
		6YKSA1·UK

CHARGELESS SYSTEM

PRE-CHARGED REFRIGERANT IS SUPPLIED FOR UP TO 30m PIPING LENGTH AT SHIPMENT.

The unique refrigerant circuit and a large accumulator always control the optimal refrigerant level regardless of the length (50m max. and 5m min.) of piping. The additional refrigerant charging work during installation often causes problems. Therefore, it is completely eliminated. This unique system improves the quality and reliability of the work done. It also helps to speed up the installation work.

3

4			DATA
1. REFILLING REFRIGERANT CHARGE (R-22 : kg)
	Models															Refrigerant piping length (one way)
						5m			10m			15m				20m			25m			30m				35m				40m			45m			50m
PUH-1VKA1·UK						1.7			1.7			1.8			1.8				1.9			1.9				—				—			—			—
PUH-1.6VKA·UK						1.5			1.7			1.8			1.9				2.1			2.2				2.3			2.4				—			—
PUH-1.6VKA1·UK
PUH-2VKA·UK						1.5			1.7			1.8			1.9				2.1			2.2				2.3			2.4				—			—
PUH-2VKA1·UK
PUH-2.5VKA·UK						2.1			2.3			2.4			2.5				2.7			2.8				2.9			3.0				3.1			3.3
PUH-2.5VKA1·UK
PUH-3VKA·UK						2.5			2.7			2.8			2.9				3.1			3.2				3.3			3.4				3.6			3.7
PUH-3VKA1·UK
PUH-3YKA·UK						2.5			2.7			2.8			2.9				3.1			3.2				3.3			3.4				3.6			3.7
PUH-3YKA1·UK
PUH-4YKSA·UK						3.5			3.6			3.8			3.9				4.1			4.2				4.4			4.5				4.6			4.8
PUH-4YKSA				·UK
	1
PUH-5YKSA·UK						4.7			4.8			5.0			5.1				5.3			5.4				5.6			5.7				5.9			6.0
PUH-5YKSA				·UK
	1
PUH-6YKSA·UK						4.3			4.4			4.6			4.7				4.9			5.0				5.2			5.3				5.5			5.6
PUH-6YKSA				·UK
	1
2. COMPRESSOR TECHNICAL DATA
	Outdoor unit					PUH-1VKA1·UK				PUH-1.6VKA ·UK						PUH-2VKA·UK				PUH-2.5VKA·UK					PUH-3VKA·UK					PUH-3YKA·UK				PUH-4YKSA·UK
										PUH-1.6VKA			1	·UK		PUH-2VKA	1	·UK		PUH-2.5VKA			1	·UK	PUH-3VKA		1			PUH-3YKA		1	·UK	PUH-4YKSA			1	·UK
																											·UK
Compressor Model							RH173VFC				RH247VFC					NH38VMD				NH41VMD						NH52VND				NH52YDA					NH56YDA
Winding				U-V				2.85			2.00					1.05					1.03				0.83					3.60					3.50
				(R-C)
Resistance				U-W				5.55			4.55					2.23					2.22				2.03					3.60					3.50
	(Ω )			(S-C)
at 20˚C				W-V				—				—				—					—					—				3.60					3.50
			Outdoor unit									PUH-5YKSA/5YKSA1·UK														PUH-6YKSA/6YKSA1·UK
	Compressor Model											ZR61K3-TFD																	ZR68KC-TFD
	Winding					T	-T	3						2.53-2.91															2.31
						1
	Resistance
						T2-T3								2.53-2.91															2.31
			(Ω )
	at 25˚C					T3-T1								2.53-2.91															2.31

4

5 OUTLINES AND DIMENSIONS

PUH-1VKA·UK,PUH-1.6VKA·UK,PUH-2VKA·UK
PUH-1.6VKA ·UK,PUH-2VKA							1	·UK
			1
clearance		adequate	upperclearance	5.395.27	10	space	outdoorandindoorforblockTerminalunit connection		GroundandlinepowerforblockTerminalterminal	movingforHandle	panelService					60	Knockout holes for	powerline 2-[27		33
UnitOutdoor-Necessarysurrounding		Note:Allow	Frontopening										45				pipingfrontfor	(refrigerant,drainage wiring)and
	200			100		Service 500
			10	500												60		120
												flared	flared	connection	[9.523/8F	outKnockhole			outKnockhole	pipingrightfor
			10									5/8)-(25 650Refrigerant-pipe
												Refrigerantpipeconnection	[15.883/8F
													444						45
				362(14-1/4)										297
			17	330(13)		15													42
													282
	185	-9/32)																	104
		(7

-11/16)	Air intake
500(19
185 (7-9/32)	Air outlet
	Air intake

	side must be open.	200	1000
clearance	The upper
Outdoor Unit-Necessary surrounding	(Concentrated installation)	100 10	For 10 units or less

870(34-1/4)	302				524	2-12o23 Oval holes (standard bolt M10)
	24(1) guideOutlet installationhole			524	40
					77
			movingforHandle
					339
					33
	295(11-5/8)
	7	intakeair		intakeairSide
	freshRear				23

Rear piping hole

95

Handle movingfor
		138

		25.max		Standard bolt length
	R20		80
(refrigerant,drainage	R	20
	wiring)and		R6
		Bottom piping hole	2-U-shaped notched

Drain hole

Drain hole

Unit : mm (inch)

65				right piping holes-	figures
				Front	detail
17
				12
holes

5

PUH-2.5VKA·UK,PUH-3VKA·UK,PUH-3YKA·UK PUH-2.5VKA1·UK,PUH-3VKA1·UK,PUH-3YKA1·UK

Necessary-UnitOutdoorsurrounding clearance	adequate	clearance	5.27	5.39		Service space	500	unitoutdoorandindoorforblockTerminalconnection	GroundandlinepowerforblockTerminalterminal	movingforHandle	panelService				[3/8F9.52connection
	Note:Allow	10 10
		upper												45
200				100
			Frontopening		500
					10							-pipe flared	[15.88 5/8F -pipe flared
												Refrigerant	connection	Refrigerant
												850(33-7/16)
												553
			362(14-1/4)											352
	17		330(13)		15
													337
185	-9/32)
	(7

11/16)-500(19	intakeAir			1/4)-870(34			403
185 (7-9/32)	Air intake	Air outlet		302	Outletguide installationhole	movingforHandle
				24(1)			179
						524
							441
clearance	be open.			295(11-5/8)	intakeairSide	freshRear intakeair
	upperTheside must	200	1000	7
Outdoor Unit-Necessary surrounding	(Concentrated installation)	100 10	For 10 units or less		Handle movingfor
							138

6

	holes for	2-[27
53	out	line
	Knock	power
60		120
Knock out hole for front piping		(refrigerant,drainage and wiring)	Knock out hole for right piping
			45
60			42
			33
			104
524		2-12o23 Oval holes (standard bolt M10)
40

33

23

Rear piping hole

95

		25.max		Standard bolt length
	R20		80
(refrigerant,drainage	R	20
	wiring)and		R6
		Bottom piping hole	2-U-shaped notched

Drain hole

Drain hole

Unit : mm (inch)

65				right piping holes-	figures
				Front	detail
17
				12
holes

Outdoor Unit-Necessary surrounding clearance												300	4YKSA-PUH
										Outdoor Unit-Necessary surrounding clearance
(Concentrated installation)
		The upper side must be open.
						185		185				Note:Allow adequate	·UK1
						(7-9/32)	500(19-11/16)	(7-9/32)
									17	10	10	upper clearance
							Air intake
											Front opening
								39.527.5	330(13)	362(14-1/4)		100
	For 10 units or less	1000									500
150	10	300
					Air intake
										Terminal block for	10
										indoor and outdoor
						Air outlet					Service space
									15	unit connection
							870(34-1/4)				500
		7	295(11-5/8)	24(1)
						302				Terminal block for power line
					Outlet guide
										and Ground terminal
					installation hole

	Side air intake			Service panel
Handle			524
for moving				Handle
		585				1/2)-
				for moving
						1258(49
	Rear fresh		61		959
	air intake	Handle for moving
			524			Refrigerant-pipe flared
		345		382	403	connection [19.05 3/4F	45
138			83			Refrigerant-pipe flared
						connection [9.52 3/8F

95

Rear piping hole

23

33

40 524

2-12o23 Oval holes (standard bolt M10)

Drain hole

Drain hole

	60			Knock out hole
				for front piping
	104			(refrigerant,drainage
				and wiring)
	39	52	57
				Knock out hole
				for right piping

Bottom

(refrigerant,

piping hole

drainage and wiring)

	2-U-shaped	R6
	notched	17
	holes

	60	53
		Knock out holes for
	120
		power line 2-[27

R	R20
20

80	25 max.

Standard bolt length

65

12					Front right piping holes-
					detail figures

7

4YKSA·UK-PUH

(inch) mm : Unit

8

Outdoor Unit-Necessary surrounding clearance (Concentrated installation)

The upper side must be open.

150	300
	10

Air intake

For 10 units or less

1000

7 345(13-9/16) 24(1)

Outlet guide installation hole

	Side air intake
Handle			524
for moving
	Rear fresh	585	61
	air intake	Handle for moving
		345	524
138			83
95	23	33	90
	Rear piping hole
		Drain hole

						Outdoor Unit-Necessary surrounding clearance				15YKSA-PUH
									300
185		185							Note:Allow adequate
(7-9/32)	600(23-5/8)	(7-9/32)								16YKSA-·UK,PUH
						10		10	upper clearance
	Air intake	27.539.5 31/32)-380(141517		1/4)-412(16
					and Ground terminal		Front opening
					Terminal block for		10	500	150
					indoor and outdoor
Air outlet								Service space
					unit connection
	970(38-3/16)							500
					Terminal block for power line
352
										·UK
		Service panel
		Handle				1/2)
		for moving
					959	1258(49-
						Refrigerant-pipe flared
		382	403			connection [19.05 3/4F			45
						Refrigerant-pipe flared
						connection [9.52 3/8F
	524	60				Knock out hole		60	53
									Knock out holes for
						for front piping
								120
2-12o23 Oval holes		104				(refrigerant,drainage			power line 2-[27
						and wiring)
(standard bolt M10)
		39	52	57
						Knock out hole

Bottom piping hole

2-U-shaped Drain hole notched

holes

for right piping

(refrigerant,	R
	20
drainage and wiring)

R6 17

65

R20

80	25 max.

Standard bolt length

12					Front right piping holes-
					detail figures

6YKSA·UK-5YKSA·UK,PUH-PUH

(inch) mm : Unit

6			WIRING DIAGRAM
PUH-1VKA·UK,PUH-1.6VKA·UK
SYMBOL			NAME	SYMBOL	NAME	SYMBOL	NAME
HC			CRANKCASE HEATER	MC	COMPRESSOR MOTOR(INNER THERMOSTAT)	X12<O.B>	COMPRESSOR RELAY
C1			FAN MOTOR CAPACITOR	MF	FAN MOTOR (INNER THERMOSTAT)	X13<O.B>	R.V RELAY
C2			COMPRESSOR CAPACITOR	O.B	OUTDOOR CONTROLLER BOARD	X14<O.B>	B.V RELAY
FC<O.B>			FAN CONTROLLER	SW1·2·3<O.B>	SELECT SWITCH(CHECK,SERVICE)	ZNR<O.B>	VARISTOR
F<O.B>			FUSE(6A)	T	TRANSFORMER	52C	COMPRESSOR CONTACTOR
21S4			R.V COIL	TB1,3	TERMINAL BLOCK	63H1	HIGH PRESSURE CONTROL SWITCH
21R			BYPASS VALVE COIL	RT	OUTDOOR COIL THERMISTOR
					(0˚C/15kΩ ,25˚C/5.4kΩ )
LD1~LD8			LED(CHECK, SERVICE)	X11<O.B>	CRANKCASE HEATER RELAY

1	YLW		LED
TO INDOOR UNIT
2	ORN
CONNECTING WIRES
3	BRN
DC 12V (polar)	O.B
TB3
	SW1
	SW2		LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8
	SW3
			OFF
			ON
	2	1
	3
	2	CN3
	1

RT

		4	3	2	1
CN2	X14 X13 X12	X11	CN4		FC
					5
					26C	MF2
X14	X13	X12		X11	63H1
					63H2	MF1

CN4T

4

3

2

1

4

21S4

SV

TRF

52C

RED RED

WHT

WHT

RED

RED

GRY

GRY

WHT

WHT

A

21

52C

S4

YLW

240V

21R

B

BRN AC12.3V

ORN

230V

	RED	220V
RED AC12.3V
	T

F

CH ZNR R/1 S/2 T/3

BLU BLU

HC

	51CM
BRN BRN YLW YLW YLW YLW	BLU		BLU WHT
63H1
	BLU	4
	MF REDWHT	3	RED
	ORN	2	C1
		1	ORN

		RED
	TB1	BLK		52C
			R
	A	RED		U	BLU			R
POWER SUPPLY
		BLK			WHT		C
~(1PHASE)	N							MC
			T	W	BLU	RED
220—240V 50Hz	E							S
						C2
	GRN/YLW

Main functions of LED (when both Nos.1 and 2 of

SW3

are ”OFF” )

How to use SW1 and 2

●Pressing

erases the past check contents loaded on the

(

)

(

)

SW1

LED No.

Output display

light

Check display

flash

microcomputer.

LD1

Compressor indoor command

—

●The output display (light) remains lit during operation but

LD2

Heating indoor command

—

pressing

SW2

displays the past check contents in flashing

LD3

63H1

ON

Pipe temp. sensor short/open

mode. Pressing the switch again returns to output display

LD4

Compressor

ON

—

(light).

LD5

Outdoor fan

ON

—

LD6

4-way valve

ON

26C functions

LD7

Bypass valve

ON

RT overheat protecyion

LD8

Crankcase heater

ON

Defective input

NOTES : 1.	If the operation of the protection device stops to function. then check the display flashes.
2.	Symblos used in wiring diagram above are. /:Terminal block				:Connector	:PC board insertion tab.

CAUTIONS FOR SERVICING

●Connect the lead wires according to the color indication of sticker on the compressor terminal.

CAUTIONS FOR POWER SUPPLY WIRING

●Since LD8 lights when normal power is furned ”ON”, check the power supply with the ON or OFF LD8. wSince the transformer (T) is connected with 240V power, if 220V or 230V power is used,

change the wiring connection in the following procedure.

CAUTION FOR INDOOR AND OUTDOOR CONNECTING WIRES

wWhen power supply is 220V

YELLOW 240V
ORANGE 230V
RED 220V	WHITE

●Since the indoor and outdoor connecting wires has polarity, make sure to connect the same terminal numbers (1,2,3) for indoor and outdoor units.

9

PUH-1.6VKA ·UK
	1
SYMBOL	NAME	SYMBOL	NAME	SYMBOL	NAME
HC	CRANKCASE HEATER	MC	COMPRESSOR MOTOR(INNER THERMOSTAT)	X12<O.B>	COMPRESSOR RELAY
C1	FAN MOTOR CAPACITOR	MF	FAN MOTOR (INNEER THERMOSTAT)	X13<O.B>	21S4 RELAY
C2	COMPRESSOR CAPACITOR	O.B	OUTDOOR CONTROLLER BOARD	X14<O.B>	21R RELAY
FC<O.B>	FAN CONTROLLER	SW1·2·3<O.B>	SELECT SWITCH(CHECK,SERVICE)	ZNR<O.B>	VARISTOR
F<O.B>	FUSE(6.3A)	T	TRANSFORMER	52C	COMPRESSOR CONTACTOR
21S4	4-WAY VALVE SOLENOID COIL	TB1,3	TERMINAL BLOCK	63H1	HIGH PRESSURE CONTROL SWITCH
21R	BYPASS VALVE SOLENOID COIL	RT	OUTDOOR COIL THERMISTOR
			(0˚C/15kΩ ,25˚C/5.4kΩ )
LD1~LD8	LED(CHECK, SERVICE)	X11<O.B>	CRANKCASE HEATER RELAY

1	YLW		LED
TO INDOOR UNIT
2	ORN
CONNECTING WIRES
3	BRN
DC 12V (polar)	O.B
TB3
	SW1
	SW2		LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8
	SW3
			OFF
			ON
	2	1
	3
	2	CN3
	1

RT

		4	3	2	1
CN2	X14 X13 X12	X11	CN4			FC
						5
					63H1	26C	MF2
X14	X13	X12		X11
						63H2	MF1

CN4T

4

3

2

1

4

21S4

SV

TRF

52C

RED RED

WHT

WHT

BLU

BLU

GRY

GRY

WHT

WHT

A1

21

52C

S4

YLW

240V

21R

A2

BRN AC12.3V

ORN

230V

	RED	220V
RED AC12.3V
	T

F

CH ZNR R/1 S/2 T/3

BLU BLU

HC

	51CM
BRN BRN YLW YLW YLW YLW	BLU		BLU WHT
63H1
	BLU	4
	MF REDWHT	3	RED
	ORN	2	C1
		1	ORN

		RED
	TB1	BLU	52C
		RED L1/1
POWER SUPPLY	L		T1/2	BLU			R
		BLU		WHT		C
~(1PHASE)	N						MC
		L3/5	T3/6	BLU	RED
220—240V 50Hz							S
					C2
	GRN/YLW

Main functions of LED (when both Nos.1 and 2 of

SW3

are ”OFF” )

How to use SW1 and 2

●Pressing

erases the past check contents loaded on the

( )

(

)

SW1

LED No.

Output display

light

Check display

flash

microcomputer.

LD1

Compressor indoor command

—

●The output display (light) remains lit during operation but

LD2

Heating indoor command

—

pressing

SW2

displays the past check contents in flashing

LD3

63H1

ON

Pipe temp. sensor short/open

mode. Pressing the switch again returns to output display

LD4

Compressor

ON

—

(light).

LD5

Outdoor fan

ON

—

LD6

4-way valve

ON

26C functions

LD7

Bypass valve

ON

RT overheat protecyion

LD8

Crankcase heater

ON

Defective input

NOTES : 1.	If the operation of the protection device stops to function. then check the display flashes.
2.	Symblos used in wiring diagram above are. /:Terminal block				:Connector	:PC board insertion tab.

CAUTIONS FOR SERVICING

●Connect the lead wires according to the color indication of sticker on the compressor terminal.

CAUTIONS FOR POWER SUPPLY WIRING

●Since LD8 lights when normal power is furned ”ON”, check the power supply with the ON or OFF LD8. wSince the transformer (T) is connected with 240V power, if 220V or 230V power is used,

change the wiring connection in the following procedure.

CAUTION FOR INDOOR AND OUTDOOR CONNECTING WIRES

wWhen power supply is 220V

YELLOW 240V
ORANGE 230V
RED 220V	WHITE

●Since the indoor and outdoor connecting wires has polarity, make sure to connect the same terminal numbers (1,2,3) for indoor and outdoor units.

10

PUH-2VKA·UK,PUH-2.5VKA·UK,PUH-3VKA·UK

SYMBOL	NAME	SYMBOL	NAME	SYMBOL	NAME
CN3(O.B)	CONNECTOR (CONNECTING)	MC	COMPRESSOR	X12(O.B)	COMPRESSOR RELAY
	WIRES INDOOR/OUTDOOR	MF	FAN MOTOR	X13(O.B)	SOLENOID COIL RELAY
CN4T(O.B)	CONNECTOR(TRANSFORMER)	O.B	OUTDOOR CONTROLLER BOARD	X14(O.B)	B.V COIL RELAY
HC	CRANKCASE HEATER	21R	BYPASS VALVE SOLENOID COIL	ZNR<O.B>	SURGE ABSORBER
C1	FAN MOTOR CAPACITOR	( )	SELECT SWITCH(CHECK,SERVICE)	21S4	BYPASS VALVE SOLENOID COIL
		SW1·2·3O.B
C2	RUN CAPACITOR FOR MC	T	TRANSFORMER	51C	THERMAL RELAY
FC(O.B)	FAN CONTROLLER	TB1,3	TERMINAL BLOCK	52C	CONPRESSOR CONTACTOR
F(O.B)	FUSE(6A)	TH	OUTDOOR COIL THERMISTOR	63H1	HIGH PRESSURE CONTROL SWITCH
LD1-LD8(O.B)	LED(CHECK,SERVICE)	X11(O.B)	CRANKCASE HEATER RELAY	26C	THERMAL RELAY

TO INDOOR UNIT CONNECTING WIRES DC 12V

POWER SUPPLY ~(1PHASE) 220—240V 50Hz

1

YLW

LED

2

TH

ORN

O.B

3

BRN

TB3

SW1

4

3

2

1

SW2

LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8

CN4

SW3

CN2

OFF

X14

X13

X12

X11

ON

2 1

3

2

CN3

26C

1

X14

X13

X12

X11

F.C

63H1

MF2

MF1

CN4T

51CM

4

3

2

1

ZNR

4

SV

TRF

21S4

52C

F R

S

T

5

RED

CH

RED

RED

BLK

BLK

GRY

GRY

WHT

WHT

BRN

BRN

YLW

YLW

YLW

YLW

BLU

RED

BLU

BLU

BRN

A

WHT

WHT

BRN

YLW

21

3

HC

63H1

BLU

BLU

MF

AC

21R

52C

4

ORN 240V

S4

RED

RED

12.3V

B

C1

2

RED

230V

ORN 1

ORN

220V

WHT

AC12.3V

WHT

T

RED

BLK

TB1

A

RED

R

U

BLU

R

N

BLK

WHT

C

MC

T

W

BLU

RED

E

GRN/YLW

52C

S

C2

Main functions of LED (when both Nos.1 and 2 of

SW3

are ”OFF” )

How to use SW1 and 2

●Pressing

erases the past check contents loaded on the

(

)

(

)

SW1

LED No.

Output display

light

Check display

flash

microcomputer.

LD1

Compressor indoor command

—

●The output display (light) remains lit during operation but

LD2

Heating indoor command

—

pressing

SW2

displays the past check contents in flashing

LD3

63H1

ON

Pipe sensor short/open

mode. Pressing the switch again returns to output display

LD4

Compressor

ON

—

(light).

LD5

Outdoor fan

ON

—

LD6

4-way valve

ON

—

LD7

Bypass valve

ON

TH overheat protecyion

LD8

Crankcase heater

ON

Defective input

NOTE : If the operation of the protection device stops to function. then check the display flashes.

CAUTIONS FOR SERVICING

●Connect the lead wires according to the color indication of sticker on the compressor terminal.

CAUTIONS FOR POWER SUPPLY WIRING

●Since LD8 lights when normal power is furned ”ON”, check the power supply with the ON or OFF LD8. wSince the transformer (T) is connected with 240V power, if 220V or 230V power is used,

change the wiring connection in the following procedure.

CAUTION FOR INDOOR AND OUTDOOR CONNECTING WIRES

wWhen power supply is 220V

YELLOW 240V
ORANGE 230V
RED 220V	WHITE

●Since the indoor and outdoor connecting wires has polarity, make sure to connect the same terminal numbers (1,2,3) for indoor and outdoor units.

11

PUH-2VKA		1	·UK,PUH-2.5VKA ·UK,PUH-3VKA			1	·UK
			1
SYMBOL			NAME	SYMBOL			NAME	SYMBOL	NAME
CN3(O.B)	CONNECTOR (CONNECTING)			MC	COMPRESSOR			X12(O.B)	COMPRESSOR RELAY
	WIRES INDOOR/OUTDOOR			MF	FAN MOTOR			X13(O.B)	SOLENOID COIL RELAY
CN4T(O.B)	CONNECTOR(TRANSFORMER)			O.B	OUTDOOR CONTROLLER BOARD			X14(O.B)	SOLENOID COIL RELAY
HC	CRANKCASE HEATER			21R	BYPASS VALVE SOLENOID COIL			ZNR<O.B>	SURGE ABSORBER
C1	FAN MOTOR CAPACITOR			( )	SELECT SWITCH(CHECK,SERVICE)			21S4	4-WAY VALVE SOLENOID COIL
				SW1·2·3O.B
C2	RUN CAPACITOR FOR MC			T	TRANSFORMER			52C	CONPRESSOR CONTACTOR
FC(O.B)	FAN CONTROLLER			TB1,3	TERMINAL BLOCK			63H1	HIGH PRESSURE CONTROL SWITCH
F(O.B)	FUSE(6.3A)			TH	PIPE TEMP. THERMISTOR
LD1-LD8(O.B)	LED(CHECK,SERVICE)			X11(O.B)	CRANKCASE HEATER RELAY

TO INDOOR UNIT CONNECTING WIRES DC 12V

POWER SUPPLY ~(1PHASE) 220—240V 50Hz

1

YLW

LED

2

TH

ORN

O.B

3

BRN

TB3

SW1

4 3

2

1

SW2

LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8

CN4

SW3

CN2

OFF

X14

X13

X12

X11

ON

2 1

3

2

CN3

26C

1

X14

X13

X12

X11

F.C

63H1

MF2

MF1

CN4T

51CM

4

3

2

1

ZNR

4

SV

TRF

21S4

52C

F R

S

T

5

RED

CH

RED

RED

BLU

BLU

GRY

GRY

WHT

WHT

BRN

BRN

YLW

YLW

YLW

YLW

BLU

RED

BLU

BLU

BRN

A1

WHT

WHT

BRN

YLW

21

3

HC

63H1

BLU

BLU

MF

AC

21R

52C

4

ORN 240V

S4

RED

RED

12.3V

A2

C1

2

RED

230V

ORN 1

ORN

220V

WHT

AC12.3V

WHT

T

RED

BLU

TB1

RED

L1/1

T1/2

BLU

R

L

N

BLU

WHT

C

MC

L3/5

T2/6

BLU

RED

GRN/YLW

52C

S

C2

Main functions of LED (when both Nos.1 and 2 of

SW3

are ”OFF” )

How to use SW1 and 2

●Pressing

erases the past check contents loaded on the

( )

(

)

SW1

LED No.

Output display

light

Check display

flash

microcomputer.

LD1

Compressor indoor command

—

●The output display (light) remains lit during operation but

LD2

Heating indoor command

—

pressing

SW2

displays the past check contents in flashing

LD3

63H1

ON

Pipe sensor short/open

mode. Pressing the switch again returns to output display

LD4

Compressor

ON

—

(light).

LD5

Outdoor fan

ON

—

LD6

4-way valve

ON

—

LD7

Bypass valve

ON

TH overheat protecyion

LD8

Crankcase heater

ON

Defective input

NOTE : If the operation of the protection device stops to function. then check the display flashes.

CAUTIONS FOR SERVICING

●Connect the lead wires according to the color indication of sticker on the compressor terminal.

CAUTIONS FOR POWER SUPPLY WIRING

●Since LD8 lights when normal power is furned ”ON”, check the power supply with the ON or OFF LD8. wSince the transformer (T) is connected with 240V power, if 220V or 230V power is used,

change the wiring connection in the following procedure.

CAUTION FOR INDOOR AND OUTDOOR CONNECTING WIRES

wWhen power supply is 220V

YELLOW 240V
ORANGE 230V
RED 220V	WHITE

●Since the indoor and outdoor connecting wires has polarity, make sure to connect the same terminal numbers (1,2,3) for indoor and outdoor units.

12

PUH-3YKA·UK

SYMBOL	NAME	SYMBOL		NAME	SYMBOL	NAME
CN3<O.B>	CONNECTOR (CONNECTING	O.B		OUTDOOR CONTROLLER BOARD	21R	BYPASS VALVE SOLENOID COIL
	WIRES INDOOR/OUTDOOR)	<	>	SELECT SWITCH(CHECK,SERVICE)	21S4	R.V COIL
		SW1·2·3 O.B
CN4T<O.B>	CONNECTOR (TRANSFORMER)	T		TRANSFORMER	52C	COMPRESSOR CONTACTOR
C	FAN MOTOR CAPACITOR	TB1,3		TERMINAL BLOCK	63H1	HIGH PRESSURE CONTROL SWITCH
FC<O.B>	FAN CONTROLLER	TH		OUTDOOR COIL TERMISTOR
F<O.B>	FUSE(6A)	X11<O.B>		CRANKCASE HEATER RELAY
HC	CRANKCASE HEATER	X12<O.B>		COMPRESSOR RELAY
LD1-LD8<O.B>	LED(CHECK,SERVICE)	X13<O.B>		R.V COIL RELAY
MC	COMPRESSOR	X14<O.B>		B.V COIL RELAY
MF	FAN MOTOR	ZNR<O.B>		SURGE ABSORBER

TO INDOOR UNIT CONNECTING WIRES DC 12V

POWER SUPPLY 3N~(3PHASE 4WIRES) 380/220—415/240V 50Hz

1

YLW

LED

2

TH

ORN

O.B

3

BRN

TB3

SW1

4

3

2

1

SW2

LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8

CN4

SW3

CN2

X14

X13

X12

X11

OFF

ON

2 1

3

2

CN3

26C

1

X14

X13

X12

X11

F.C

MF2

63H1

MF1

CN4T

51C

4

3

2

1

ZNR

4

SV

TRF

21S4

52C

CH

F R

S

T

5

RED

RED

RED

BLK

BLK

GRY

GRY

WHT

WHT

BRN BRN

ORN

ORN

YLW

YLW

RED

BRN

A

96

WHT

WHT

BRN

YLW

3

AC

21R

21

52C

HC

63H1 51C

26C

BLU

4 BLU

MF

12.3V

ORN 240V

S4

B

95

C

RED

2

RED

RED

230V

ORN 1

ORN

220V

WHT

AC12.3V

WHT

T

RED

WHT

BLU

TB1

BLK

RED

R

U

R

U

RED

U

A1

A2

WHT

S

V

S

V

WHT

V

MC

BLU

T

W

T

W

BLU

A3

W

52C

N

51C

E

GRN/YLW

Main functions of LED

(

when both Nos.1 and 2 of

SW3

)

How to use SW1 and 2

are “OFF”

●Pressing

erases the past check contents loaded on the

(

)

(

)

SW1

LED No.

Output display

light

Check display

flash

microcomputer.

LD1

Compressor indoor command

Anti-phase detect

●The output display (light) remains lit during operation but

LD2

Heating indoor command

Missing-phase detect

pressing

SW2

displays the past check contents in flashing

LD3

63H1

ON

Pipe sensor short/open

mode. Pressing the switch again returns to output display

LD4

Compressor

ON

—

(light).

LD5

Outdoor fan

ON

51C functions

Power line reconnoction procedure

LD6

4-way valve

ON

26C functions

In case of reverse rotation

LD7

Bypass valve

ON

TH overheat protection

LD8

Crankcase heater

ON

Defective input

Unit side

Outdoor unit

A1A2A3

wiring

NOTE : If the operation stops to function of the protection device, the check display flashes.

terminal

Change 2 out of 1.

CAUTIONS FOR SERVICING

2 and 3.

Connect the lead wires according to the color indication of sticker on the compressor terminal.

Field wiring

●

(This example shows

reconnection of 1

CAUTIONS FOR POWER SUPPLY WIRING

Change thie side

and 2.)

1 2 3

●Making wiring connection in anti-phase or missing phase “A2” or “A3” causes the protection device incorporated in the

microcomputer to function resulting in LD1 or LD2 shown in the table above to flash and prevents the compressor

wWhen power supply is 220V

operation. If phase “A1” or “N” is missing it causes all displays to go out. Under normal condition LD8 light when power

is turned “ON”. If anti-phase connection is to be used, change connections of 2 out of 3 power lines (field wiring side)

YELLOW

240V

contained in the power supply terminal block (TB1) of the outdoor unit as shown at the right upper.

ORANGE

wSince the transformer (T) is connected with 240V power, if 220V or 230V power is used, change the wiring connection

230V

in the following procedure.

RED

WHITE

220V

CAUTION FOR INDOOR AND OUTDOOR CONNECTING WIRES

●Since the indoor and outdoor connecting wires has polarity, make sure to connect the same terminal numbers (1,2,3) for indoor and outdoor units.

13