Mitsubishi PUHZ-RP 1.6VHA, PUHZ-RP 2VHA, PUHZ-RP 2.5VHA, PUHZ-RP 3VHA, PUHZ-RP 4VHA Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS	2004
	No.OC294
	REVISED-EDITION-D

TECHNICAL & SERVICE MANUAL

R410A

Outdoor unit	[Service Ref.]
[model names]
PUHZ-RP1.6VHA	PUHZ-RP1.6VHA
PUHZ-RP2VHA	PUHZ-RP2VHA
PUHZ-RP2.5VHA	PUHZ-RP2.5VHA
	PUHZ-RP2.5VHA1
PUHZ-RP3VHA	PUHZ-RP3VHA
	PUHZ-RP3VHA1
PUHZ-RP4VHA	PUHZ-RP4VHA
	PUHZ-RP4VHA1
PUHZ-RP5VHA	PUHZ-RP5VHA
	PUHZ-RP5VHA1
PUHZ-RP6VHA	PUHZ-RP6VHA
	PUHZ-RP6VHA1
PUHZ-RP4YHA	PUHZ-RP4YHA
PUHZ-RP5YHA	PUHZ-RP5YHA
PUHZ-RP6YHA	PUHZ-RP6YHA

Revision:

•PUHZ-RP4YHA, PUHZ-RP5YHA, PUHZ-RP6YHA are added in REVISED EDITION-D.

•Some descriptions have been modified.

•Please void OC294 REVISED EDITION-C.

CONTENTS

1.TECHNICAL CHANGES············

2.SAFETY PRECAUTION·············

3.COMBINATION OF INDOOR AND OUTDOOR UNITS···7

4.PART NAMES AND FUNCTIONS ········

5.SPECIFICATIONS···············

6. DATA ·····················

7. OUTLINES AND DIMENSIONS·········

8. WIRING DIAGRAM ···············

9.WIRING SPECIFICATIONS ···········

10.REFRIGERANT SYSTEM DIAGRAM········

11.TROUBLESHOOTING··············

12. DISASSEMBLY PROCEDURE ··········

13. PARTS LIST ··················

Model name 14. OPTIONAL PARTS··············· indication

PUHZ-RP2.5VHA

PUHZ-RP3VHA

1 TECHNICAL CHANGES

PUHZ-RP4VHA PUHZ-RP4VHA1

PUHZ-RP5VHA PUHZ-RP5VHA1

PUHZ-RP6VHA PUHZ-RP6VHA1

1.Reduced Design Pressure:

Design Pressure has been changed from 4.41MPa to 4.15MPa. (High Pressure Switch has been changed.)

2.Partial Change on Refrigerant Circuit:

Only 1 distributor is adopted on the Heat Exchanger. (Previously 2)

3.Partial Change on Electrical Wiring: Change of reactor (DCL).

Only 1 reactor (DCL) is adopted. (Previously 2)

4.New Service Parts as a result of the structural improvement:

•Power Receiver

•Separator

•Rubber Mount (for a Compressor)

•Thermistor (2 phase pipe, Outdoor temperature)

•Thermistor (Discharge)

•Linear Expansion Valve Coil

5.Reduced Refrigerant Amount

The Charged Refrigerant Amount has been reduced from 5.5kg to 5.0kg

6.Wider Operation Range:

A change is made on the Minimum Capacity.

(For details, please refer to the Service Manual for indoor units.)

PUHZ-RP2.5VHA PUHZ-RP2.5VHA1

PUHZ-RP3VHA PUHZ-RP3VHA1

1.The parts below have been changed.

•Thermistor (Outdoor pipe / TH3)

•Linear expansion valve coil

2.The refrigerant circuit has been changed.

•High pressure switch (4.41MPa 4.14MPa)

•Charge plug

2

2 SAFETY PRECAUTION

2-1. CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

Use new refrigerant pipes.

In case of using the existing pipes for R22, be careful with the followings.

·For RP4, 5 and 6, be sure to perform replacement operation before test run.

·Change flare nut to the one provided with this product.

Use a newly flared pipe. ·Avoid using thin pipes.

Make sure that the inside and outside of refrigerant piping is clean and it has no contamination such as sulfur hazardous for use, oxides, dirt, shaving particles, etc.

In addition, use pipes with specified thickness.

Contamination inside refrigerant piping can cause deterioration of refrigerant oil etc.

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

If dirt, dust or moisture enter 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 enter, 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

Keep the tools with care.

If dirt, dust or moisture enter 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.

[1]Cautions for service

(1)Perform service after collecting 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 stood vertically. (Refrigerant is charged from liquid phase.)

3

Unit

Gravimeter

[3] Service tools

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

No.		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.

3Electronic scale

4	Gas leak detector	·Use the detector for R134a, R407C or R410A.
5	Adaptor for reverse flow check	·Attach on vacuum pump.

6Refrigerant charge base

7 Refrigerant cylinder	·Only for R410A	Top of cylinder (Pink)
		Cylinder with syphon

8Refrigerant recovery equipment

4

2-2. CHANGED POINT

•Precautions when reusing existing R22 refrigerant pipes

(1) Flowchart

Measure the existing pipe thickness and check for damage.

The existing pipe thickness meets specifications and the pipes are not damaged.

Check if existing air conditioner can operate.

The existing pipe thickness does not meet specifications or the pipes are damaged.

Existing air conditioner can operate.

Perform cooling operation for about 30 minutes and then do a pump down work.

Existing air conditioner cannot operate.

Use a refrigerant recovery equipment to collect the refrigerant.

Check the oil condition when collecting the refrigerant.

Oil is clean.

Oil is dirty.

When the compressor bearings

are glazed, rotation scratches

are present, or the compressor

breaks down, iron particles or

oil deterioration will blacken the

oil.

Disconnect existing air con-

Disconnect existing air conditioner

ditioner from piping.

from pipes and clean pipes using

cleaning device.

Attach a filter drier.

Existing pipes can be reused.

Existing pipes cannot be

reused. Use new pipes.

In case the unit is RP1.6, 2,

In case the unit is RP4, 5

2.5 ro 3 which utilizes AB oil.

or 6 which utilize ester oil.

Connect a new air conditioner.

Connect a new air conditioner.

Perform replacement operation.

·When performing replacement operation, make sure that DIPSW8-2 on outdoor unit controller board is set to ON.

wChemical compounds containing chlorine left in existing pipes are collected by replace filter.

●The air conditioner automatically performs cooling operation through replace filter for about 2 hours.

Connecting a new air conditioner

1Flaring work should be done so that flare meets the dimension for R410A. Use flare nut provided with indoor and outdoor unit.

2When using gas piping of [19.05mm for RP4, 5 or 6.

Make sure that DIP SW8-1 on outdoor unit controller board is set to ON. WThis is to keep the pressure on pipes within permissible range.

●Use different diameter joint or adjust the piping size by brazing.

3When using pipes larger than specified size for RP1.6, 2, 2.5 or 3. Make sure that DIP SW8-1 on outdoor unit controller board is set to ON.

WThis is to prevent oil flow ratio from lowering due to the decrease in flowing refrigerant. ●Use different diameter joint or adjust the piping size by brazing.

4When existing pipes are specified size.

The pipes can be reused referring to table 1 on page 18.

●Use different diameter joint or adjust the piping size by brazing.

When using existing pipes for RP4, 5 and 6.

Make sure that DIP SW8-2 on outdoor unit controller board is set to ON and perform replacement operation.

wChemical compounds containing chlorine left in existing pipes are collected by replace filter.

●The air conditioner automatically performs cooling operation through replace filter for about 2 hours.

5

(2)Cautions for refrigerant piping work

New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R410A is 1.6 time higher than that of R22, their sizes of flared sections and flare nuts are different.

1Thickness of pipes

Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness shown below. (Never use pipes of 0.7mm or below.)

Diagram below: Piping diameter and thickness

Nominal	Outside	Thickness (mm)
dimensions	diameter (mm)	R410A	R22
1/4”	6.35	0.8	0.8
3/8”	9.52	0.8	0.8
1/2”	12.70	0.8	0.8
5/8”	15.88	1.0	1.0
3/4”	19.05	—	1.0

2Dimensions of flare cutting and flare nut

The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that, R410A is a refrigerant, which has higher risk of leakage because of its working pressure higher than that of other refrigerants. Therefore, to enhance airtightness and intensity, flare cutting dimension of copper pipe for R410A have been specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also have partly been changed to increase intensity as shown below. Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below. For 1/2” and 5/8”, the dimension B changes.

Use torque wrench corresponding to each dimension.

	Dimension A
								Dimension B
Flare cutting dimensions				(mm)		Flare nut dimensions			(mm)
Nominal		Outside	Dimension A ( -+00.4 )			Nominal	Outside	Dimension B
dimensions		diameter	R410A	R22		dimensions	diameter	R410A	R22
1/4”		6.35	9.1	9.0		1/4”	6.35	17.0	17.0
3/8”		9.52	13.2	13.0		3/8”	9.52	22.0	22.0		w36.0mm for
1/2”		12.70	16.6	16.2		1/2”	12.70	26.0	24.0		indoor unit
5/8”		15.88	19.7	19.4		5/8”	15.88	29.0 w	27.0		of RP4, 5
3/4”		19.05	—	23.3		3/4”	19.05	—	36.0		and 6

3Tools for R410A (The following table shows whether conventional tools can be used or not.)

Tools and materials	Use	R410A tools	Can R22 tools be used?	Can R407C tools be used?
Gauge manifold	Air purge and refrigerant charge	Tool exclusive for R410A
Charge hose	Operation check and the two above	Tool exclusive for R410A
Gas leak detector	Gas leak check	Tool for HFC refrigerant
Refrigerant recovery equipment	Collection of refrigerant	Tool exclusive for R410A
Refrigerant cylinder	Refrigerant charge	Tool exclusive for R410A
Applied oil	Apply to flared section	Ester oil and alkylbenzene		Ester oil:
		oil (minimum amount)		Alkylbenzene oil: minimum amount
Safety charger	Prevent compressor malfunction	Tool exclusive for R410A
	when charging refrigerant by
	spraying liquid refrigerant
Charge valve	Prevent gas from blowing out	Tool exclusive for R410A
	when detaching charge hose
Vacuum pump	Vacuum drying and air	Tools for other refrigerants can	(Usable if equipped	(Usable if equipped
	purge	be used if equipped with adop-	with adopter for rever-	with adopter for rever-
		ter for reverse flow check	se flow)	se flow)
Flare tool	Flaring work of piping	Tools for other refrigerants	(Usable by adjusting	(Usable by adjusting
		can be used by adjusting	flaring dimension)	flaring dimension)
		flaring dimension
Bender	Bend the pipes	Tools for other refrigerants can be used
Pipe cutter	Cut the pipes	Tools for other refrigerants can be used
Welder and nitrogen gas cylinder	Weld the pipes	Tools for other refrigerants can be used
Refrigerant charging scale	Charge refrigerant	Tools for other refrigerants can be used
Vacuum gauge or thermis-	Check the degree of vacuum. (Vacuum	Tools for other refrigerants
tor vacuum gauge and	valve prevents back flow of oil and refri-	can be used
vacuum valve	gerant to thermistor vacuum gauge)
Charging cylinder	Charge refrigerant	Tool exclusive for R410A

: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.)

: Tools for other refrigerants can be used under certain conditions. : Tools for other refrigerants can be used.

6

3 COMBINATION OF INDOOR AND OUTDOOR UNITS

Heat pump without electric heater

					Outdoor unit
	Indoor unit				Heat pump type
					PUHZ-RP
		Service	1.6	2	2.5	3	4	5	6
	Service Ref.		VHA	VHA	VHA	VHA	VHA	VHA	VHA
		Manual No.
					VHA1	VHA1	VHA1 VHA1 VHA1
	PEAD-RP·EA.UK						YHA	YHA	YHA
		—
	PEAD-RP·EA1.UK
	PEAD-RP·GA.UK	—	—	—				—	—
	PLA-RP·AA	OC293
	PLA-RP·AA1	REVISED EDITION-B
	PLA-RP·AA.UK	OC297
	PLA-RP·AA1.UK	REVISED EDITION-D
	PKA-RP·FAL	OC301	—	—				—	—
		REVISED EDITION-A
	PKA-RP·GAL	OC305			—	—	—	—	—
	PCA-RP·GA	OC311	—

4 PART NAMES AND FUNCTIONS

PUHZ-RP1.6VHA	PUHZ-RP2.5VHA	PUHZ-RP2.5VHA1
PUHZ-RP2VHA	PUHZ-RP3VHA	PUHZ-RP3VHA1

PUHZ-RP4VHA PUHZ-RP4VHA1

PUHZ-RP5VHA PUHZ-RP5VHA1

PUHZ-RP6VHA PUHZ-RP6VHA1

PUHZ-RP4YHA

PUHZ-RP5YHA

PUHZ-RP6YHA

CHARGELESS SYSTEM

PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. (Max.30m(PUHZ-RP1.6~RP6))

The refrigerant circuit with LEV(Linear Expansion Valve) and power receiver always control the optimal refrigerant level regardless of the length (30m max. and 5m min.) of piping. The additional refrigerant charging work during installation often causes problems. Heretofore it is completely eliminated. This unique system improves the quality and reliability of the work done.It also helps to speed up the installation time.

7

5 SPECIFICATIONS

Service Ref.

Function

	Power supply (phase, cycle, voltage)
		Running current			A
	External finish
	Refrigerant control
	Compressor
		Model
		Motor output			kW
		Starter type
		Protection devices
UNIT
	Crankcase heater				W
OUTDOOR	Heat exchanger
	Fan	Fan(drive) o No.
		Fan motor output			kW
		Airflow		K/min(CFM)
	Defrost method
	Noise level		Cooling		dB
			Heating		dB
	Dimensions		W		mm(in.)
			D		mm(in.)
			H		mm(in.)
	Weight				kg(lbs)
	Refrigerant
		Charge			kg(lbs)
PIPING		Oil (Model)			L
	Pipe size O.D.		Gas		mm(in.)
			Liquid		mm(in.)
REFRIGERANT	outdoor unit
			Piping length
	Connection method		Indoor side
			Outdoor side
	Between the indoor &		Height difference

PUHZ-RP1.6VHA				PUHZ-RP2VHA
Cooling		Heating		Cooling		Heating
		Single, 50Hz, 220/230/240V
4.01		4.23		6.16		6.47
		Munsell 3Y 7.8/1.1
		Linear Expansion Valve
			Hermetic
		SNB130FLBH
	0.8				1.1
			Line start
	HP switch				HP switch
Discharge thermo				Discharge thermo

—

Plate fin coil

Propeller fan o 1

0.043

35(1,240)

Reverse cycle

44

46

800(31-1/2)

330+23(11-13/16+7/8)

600(23-5/8)

45(99)

R410A

2.5(5.5)

0.45(NEO22)

6.35(1/4)

12.7(1/2)

Flared

Flared

Max. 30m

Max. 50m

Notes1. Rating Conditions (ISO5151/13253 T1)
Cooling : Indoor			: D.B. 27˚C(80˚F), W.B. 19˚C(66˚F) Outdoor			: D.B. 35˚C(95˚F), W.B. 24˚C(75˚F)
Heating : Indoor			: D.B. 20˚C(68˚F)		Outdoor	: D.B. 7˚C(45˚F), W.B. 6˚C(43˚F)
Refrigerant piping length (one way) : 5m (16ft)
2. Guaranteed operating range
				Indoor	Outdoor
	Cooling	Upper limit		D.B. 35˚C, W.B. 22.5˚C	D.B. 46˚C
		Lower limit		D.B. 19˚C, W.B. 15˚C	D.B. -5˚C
	Heating	Upper limit		D.B. 28˚C	D.B. 21˚C, W.B. 15˚C
		Lower limit		D.B. 17˚C	D.B. -11˚C, W.B. -12˚C

3.Guaranteed voltage 198~264V, 50Hz

4.Above data based on indicated voltage

Indoor Unit	1 phase 230V 50Hz
Outdoor Unit	1 phase 230V 50Hz

5. Refer to the service manual of indoor unit for tha indoor unit's specifications.

8

Service Ref.

Function

	Power supply (phase, cycle, voltage)
		Running current			A
	External finish
	Refrigerant control
	Compressor
		Model
		Motor output			kW
		Starter type
		Protection devices
UNIT	Crankcase heater				W
OUTDOOR	Heat exchanger
	Fan	Fan(drive) o No.
		Fan motor output			kW
		Airflow		K/min(CFM)
	Defrost method
	Noise level		Cooling		dB
			Heating		dB
	Dimensions		W		mm(in.)
			D		mm(in.)
			H		mm(in.)
	Weight				kg(lbs)
	Refrigerant
		Charge			kg(lbs)
PIPING		Oil (Model)			L
	Pipe size O.D.		Gas		mm(in.)
			Liquid		mm(in.)
REFRIGERANT	outdoor unit
			Piping length
	Connection method		Indoor side
			Outdoor side
	Between the indoor &		Height difference

PUHZ-RP2.5VHA				PUHZ-RP3VHA				PUHZ-RP4VHA
PUHZ-RP2.5VHA1				PUHZ-RP3VHA1				PUHZ-RP4VHA1
Cooling		Heating		Cooling		Heating		Cooling		Heating
			Single, 50Hz, 220/230/240V
6.61		7.50		8.04		9.74		12.33		13.94
				Munsell 3Y 7.8/1.1
				Linear Expansion Valve
				Hermetic
		TNB220FMBH						ANV33FDAMT
	1.4			1.6					1.9
				Line start
		HP switch						HP switch
								LP switch
		Discharge thermo
								Discharge thermo
				—
				Plate fin coil
		Propeller fan o 1						Propeller fan o 2
	0.060							0.060+0.060
	55(1,940)							100(3,530)
				Reverse cycle
			47						49
			48						51
			950(37-3/8)
			330+30(13+1-3/16)
	943(37-1/8)							1,350(53-1/8)
	75(165)							121(267)
				R410A
	3.5(7.7)							5.5(12.1)·····RP4VHA
								5.0(11.0)·····RP4VHA1
		0.87(NEO22)						1.40(MEL56)
			9.52(3/8)
			15.88(5/8)
				Flared
				Flared
				Max. 30m
		Max. 50m						Max. 75m

Notes1. Rating Conditions (ISO5151/13253 T1)
Cooling : Indoor			: D.B. 27˚C(80˚F), W.B. 19˚C(66˚F) Outdoor			: D.B. 35˚C(95˚F), W.B. 24˚C(75˚F)
Heating : Indoor			: D.B. 20˚C(68˚F)		Outdoor	: D.B. 7˚C(45˚F), W.B. 6˚C(43˚F)
Refrigerant piping length (one way) : 5m (16ft)
2. Guaranteed operating range
				Indoor	Outdoor
	Cooling	Upper limit		D.B. 35˚C, W.B. 22.5˚C	D.B. 46˚C
		Lower limit		D.B. 19˚C, W.B. 15˚C	D.B. -5˚C
	Heating	Upper limit		D.B. 28˚C	D.B. 21˚C, W.B. 15˚C
		Lower limit		D.B. 17˚C	D.B. -11˚C, W.B. -12˚C

3.Guaranteed voltage 360~440V, 50Hz

4.Above data based on indicated voltage

Indoor Unit	1 phase 230V 50Hz
Outdoor Unit	1 phase 230V 50Hz

5. Refer to the service manual of indoor unit for tha indoor unit's specifications.

9

Service Ref.

Function

	Power supply (phase, cycle, voltage)
		Running current			A
	External finish
	Refrigerant control
	Compressor
		Model
		Motor output			kW
		Starter type
		Protection devices
UNIT	Crankcase heater				W
	Heat exchanger
OUTDOOR	Fan	Fan(drive) o No.
		Fan motor output			kW
		Airflow		K/min(CFM)
	Defrost method
	Noise level		Cooling		dB
			Heating		dB
	Dimensions		W		mm(in.)
			D		mm(in.)
			H		mm(in.)
	Weight				kg(lbs)
	Refrigerant
		Charge			kg(lbs)
PIPING		Oil (Model)			L
	Pipe size O.D.		Gas		mm(in.)
			Liquid		mm(in.)
REFRIGERANT	outdoor unit
			Piping length
	Connection method		Indoor side
			Outdoor side
	Between the indoor &		Height difference

PUHZ-RP5VHA				PUHZ-RP6VHA
PUHZ-RP5VHA1				PUHZ-RP6VHA1
Cooling		Heating		Cooling		Heating
		Single, 50Hz, 220/230/240V
15.80		17.50		20.73		20.37
		Munsell 3Y 7.8/1.1
		Linear Expansion Valve
			Hermetic
		ANV33FDAMT
	2.4				2.9
			Line start

HP switch, LP switch, Discharge thermo

—

Plate fin coil

Propeller fan o 2

0.060 +0.060

100(3,530)

Reverse cycle

50

52

950(37-3/8)

330+30(13+1-3/16)

1,350(53-1/8)

121(267)

R410A

5.5(12.1)·····RP5, 6VHA 5.0(11.0)·····RP5, 6VHA1

1.40(MEL56)

9.52(3/8)

15.88(5/8)

Flared

Flared

Max. 30m

Max. 75m

Notes1. Rating Conditions (ISO5151/13253 T1)
Cooling : Indoor			: D.B. 27˚C(80˚F), W.B. 19˚C(66˚F) Outdoor			: D.B. 35˚C(95˚F), W.B. 24˚C(75˚F)
Heating : Indoor			: D.B. 20˚C(68˚F)		Outdoor	: D.B. 7˚C(45˚F), W.B. 6˚C(43˚F)
Refrigerant piping length (one way) : 5m (16ft)
2. Guaranteed operating range
				Indoor	Outdoor
	Cooling	Upper limit		D.B. 35˚C, W.B. 22.5˚C	D.B. 46˚C
		Lower limit		D.B. 19˚C, W.B. 15˚C	D.B. -5˚C
	Heating	Upper limit		D.B. 28˚C	D.B. 21˚C, W.B. 15˚C
		Lower limit		D.B. 17˚C	D.B. -11˚C, W.B. -12˚C

3.Guaranteed voltage

198~264V, 50Hz

4.Above data based on indicated voltage

Indoor Unit	1 phase 230V 50Hz
Outdoor Unit	1 phase 230V 50Hz

5. Refer to the service manual of indoor unit for tha indoor unit's specifications.

10

Service Ref.

PUHZ-RP4YHA

PUHZ-RP5YHA

PUHZ-RP6YHA

Function

Cooling

Heating

Cooling

Heating

Cooling

Heating

Power supply (phase, cycle, voltage)

3phase, 50Hz, 400V

Running current

A

3.79

4.33

4.85

5.41

6.49

6.37

External finish

Munsell 3Y 7.8/1.1

Refrigerant control

Linear Expansion Valve

Compressor

Hermetic

Model

ANV33FDBMT

Motor output

kW

1.9

2.4

2.9

Starter type

Line start

Protection devices

HP switch

LP

switch

UNIT

Discharge thermo

Crankcase heater

W

—

OUTDOOR

Heat exchanger

Plate fin coil

Fan

Fan(drive) o No.

Propeller fan o 2

Fan motor output

kW

0.060+0.060

Airflow

K/min(CFM)

100(3,530)

Defrost method

Reverse cycle

Noise level

Cooling

dB

49

50

Heating

dB

51

52

Dimensions

W

mm(in.)

950(37-3/8)

D

mm(in.)

330+30(13+1-3/16)

H

mm(in.)

1,350(53-1/8)

Weight

kg(lbs)

135(298)

Refrigerant

R410A

Charge

kg(lbs)

5.0(11.0)

PIPING

Oil (Model)

L

1.40(MEL56)

Pipe size O.D.

Liquid

mm(in.)

9.52(3/8)

Gas

mm(in.)

15.88(5/8)

REFRIGERANT

outdoor unit

Piping length

Max. 75m

Connection method

Indoor side

Flared

Outdoor side

Flared

Between the indoor &

Height difference

Max. 30m

Notes1. Rating Conditions (ISO5151/13253 T1)

Cooling : Indoor

: D.B. 27˚C(80˚F), W.B. 19˚C(66˚F)

Outdoor

: D.B. 35˚C(95˚F), W.B. 24˚C(75˚F)

Heating : Indoor

: D.B. 20˚C(68˚F)

Outdoor

: D.B. 7˚C(45˚F),

W.B. 6˚C(43˚F)

Refrigerant piping length (one way) : 5m (16ft)

2. Guaranteed operating range

Indoor

Outdoor

Cooling

Upper limit

D.B. 35˚C, W.B. 22.5˚C

D.B. 46˚C

Lower limit

D.B. 19˚C, W.B. 15˚C

D.B. -5˚C

Heating

Upper limit

D.B. 28˚C

D.B. 21˚C, W.B. 15˚C

Lower limit

D.B. 17˚C

D.B. -11˚C, W.B. -12˚C

3.Guaranteed voltage 342~456V, 50Hz

4.Above data based on indicated voltage

Indoor Unit	1 phase 230V 50Hz
Outdoor Unit	3 phase 400V 50Hz

5. Refer to the service manual of indoor unit for tha indoor unit's specifications.

11

6 DATA

6-1. REFILLING REFRIGERANT CHARGE (R410A : kg)

Service Ref.			Piping length (one way)								Factory
	10m	20m	30m		40m		50m	60m	75m		charged
PUHZ-RP1.6VHA	2.1	2.3	2.5		2.7		2.9	—	—		2.5
PUHZ-RP2VHA	2.1	2.3	2.5		2.7		2.9	—	—		2.5
PUHZ-RP2.5VHA	3.1	3.3	3.5		4.1		4.7	—	—		3.5
PUHZ-RP2.5VHA1
PUHZ-RP3VHA	3.1	3.3	3.5		4.1		4.7	—	—		3.5
PUHZ-RP3VHA1
PUHZ-RP4VHA	5.1	5.3	5.5		6.1		6.7	7.3	7.9		5.5
PUHZ-RP5VHA	5.1	5.3	5.5		6.1		6.7	7.3	7.9		5.5
PUHZ-RP6VHA	5.1	5.3	5.5		6.1		6.7	7.3	7.9		5.5
PUHZ-RP4VHA1	4.6	4.8	5.0		5.6		6.2	6.8	7.4		5.0
PUHZ-RP4YHA
PUHZ-RP5VHA1	4.6	4.8	5.0		5.6		6.2	6.8	7.4		5.0
PUHZ-RP5YHA
PUHZ-RP6VHA1	4.6	4.8	5.0		5.6		6.2	6.8	7.4		5.0
PUHZ-RP6YHA
					Longer pipe than 30m, additional charge is
					required.

6-2. COMPRESSOR TECHNICAL DATA

						(at 20°C)
	Unit		PUHZ-RP1.6,2VHA	PUHZ-RP2.5,3VHA	PUHZ-RP4,5,6VHA	PUHZ-RP4,5,6YHA
	Compressor model		SNB130FLBH	TNB220FMBH	ANV33FDAMT	ANV33FDBMT
	Winding	U-V	0.300 ~ 0.340	0.865 ~ 0.895	0.266	1.064
		U-W	0.300 ~ 0.340	0.865 ~ 0.895	0.266	1.064
	Resistance
	( " )
		W-V	0.300 ~ 0.340	0.865 ~ 0.895	0.266	1.064

12

6-3. NOISE CRITERION CURVES

MICROPHONE
	1m			UNIT
1.5m
				GROUND
PUHZ-RP1.6VHA	MODE	SPL(dB)	LINE	PUHZ-RP2.5VHA, VHA1
PUHZ-RP2VHA	COOLING	44		PUHZ-RP3VHA, VHA1
	HEATING	46
90				90

bar)										bar)
0.0002=	80									0.0002=	80
dB	70								NC-70	dB	70
dB (0										dB (0
	60										60
LEVEL,										LEVEL,
									NC-60
PRESSURE										PRESSURE
	50										50
									NC-50
	40										40
SOUND									NC-40	SOUND
	30										30
BAND									NC-30	BAND
	20	APPROXIMATE									20	APPROXIMATE
OCTAVE		THRESHOLD OF								OCTAVE		THRESHOLD OF
	10										10
		HEARING FOR							NC-20			HEARING FOR
		CONTINUOUS										CONTINUOUS
		NOISE										NOISE
		63	125	250	500	1000	2000	4000	8000			63	125	250	500

MODE SPL(dB) LINE

COOLING 47

HEATING 48

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

BAND CENTER FREQUENCIES, Hz

	PUHZ-RP4VHA, VHA1	MODE	SPL(dB) LINE
	PUHZ-RP4YHA	COOLING	49
		HEATING	51

bar)	90
= 0.0002	80
dB	70								NC-70
dB (0
	60
LEVEL,
									NC-60
PRESSURE	50
									NC-50
	40
									NC-40
SOUND
	30
									NC-30
BAND
	20	APPROXIMATE
OCTAVE		THRESHOLD OF
		HEARING FOR							NC-20
		CONTINUOUS
		NOISE
	10	63	125	250	500	1000	2000	4000	8000

BAND CENTER FREQUENCIES, Hz

PUHZ-RP5VHA, VHA1						MODE		SPL(dB)	LINE
PUHZ-RP6VHA, VHA1						COOLING		50
						HEATING		52
PUHZ-RP5YHA
PUHZ-RP6YHA
bar)	90
= 0.0002	80
dB	70								NC-70
dB (0
	60
LEVEL,
									NC-60
PRESSURE	50
									NC-50
	40
									NC-40
SOUND
	30
									NC-30
BAND
	20	APPROXIMATE
OCTAVE		THRESHOLD OF
		HEARING FOR							NC-20
		CONTINUOUS
		NOISE
	10	63	125	250	500	1000	2000	4000	8000

BAND CENTER FREQUENCIES, Hz

13

7	OUTLINES AND DIMENSIONS
PUHZ-RP1.6VHA								Unit : mm
PUHZ-RP2VHA		400
			[33 drain hole
	347.5
	43.6	Air intake	155
Air intake152				300	330	365
[33 drain hole
	45.4
4-10 o 21 oval hole			40	32.5		23	Service panel
(M10 foundation bolt)								Service panel
	18	Air discharge						for charge plug
	Handle for							Connection for
	moving							liquid pipe
600							35
								43
	300				155	90
	10							Connection for
								gas pipe
	150			69			183
	287.5
		Installation bolt pitch: 500				Service port
		800		1. FOUNDATION BOLTS
							2. PIPING-WIRING DIRECTION

Free space around the outdoor unit (basic example)

Please secure the unit firmly	Piping and wiring connection can
with 4 foundation (M10) bolts.	be made from the rear direction only.
(Bolts, washer and nut must
be purchased locally.)
	3. ATTACHING THE CONDUIT

100 mm or more as long as				open
no obstacle is placed on the				Basically
rear and light-and-left sides
of the unit.
100	mm
	or
	more
	w 1	or	more
		mm
	w 2	500

2 sides should be open in the right, left and rear side.

			<Foundation bolt height>	In order to attach the conduit, it is
				necessary to fix the metal plate with
				2 screws to the back panel. Procure
	w 1			the metal plate and make screw holes
		below		locally. It is recommended to use the
	ormore		FOUNDATION
				metal plate shown below. Align the
	mm	or		metal plate to the marks on the unit
	100			and attach it.
		18

w The position and the size of conduit hole depend on the conduit to be used.

		20
	350	40
		mm
		or
		more

w Conduit hole

Minimum installation space for outdoor unit

60

80

w1 In the place where short cycle tends to occur, cooling and heating capacity and power consumption might get lowered 10%. Air outlet

guide (optional PAC-SG58SG) will help them improve.

w 2 If air discharges to the wall, the surface might get stained.

Holes for metal plate fixing screw w The size of hole depends on the

screw to be used.

14

PUHZ-RP2.5VHA	Unit : mm
PUHZ-RP2.5VHA1
PUHZ-RP3VHA
PUHZ-RP3VHA1

100mm
	Over
F R E E
Over	10mm

Over	10mm

500mm

Over

15

1 FREE SPACE (Around the unit)				2 SERVICE SPACE
The diagram below shows a				Dimensions of space needed
basic example.				for service access are
Explantion of particular details are				shown in the below diagram.
given in the installation manuals etc.					Over	100
	FREE
10mm		150mm
Over
	Over
Over 150mm	Over		Over		Over	500
	10mm		10
			Service space		Over
					500

3 FOUNDATION BOLTS

Please secure the unit firmly with 4 foundation (M10) bolts. (Bolts and washers must be purchased locally.)

	<Foundation bolt height>
than
Less	30	FOUNDATION

4 PIPING-WIRING DIRECTIONS

Piping and wiring connections can be made from 4 directions: FRONT,Right,Rear and Below.

Rear Air Intake

Side Air Intake

		Example of Notes
16	1	• • • Refrigerant GAS pipe connction (FLARE)[15.88 (5/8F)
	2	• • • Refrigerant LIQUID pipe connection (FLARE)[ 9.52 (3/8F)

w1 • • • Indication of STOP VALVE connection location.

Handle for moving

Handle for moving

Handle for moving

						Air intake
Piping Knock-Out Hole Details
								Power supply wiring hole
					Right piping hole			(2-[27Knock-Out)
Power supply wiring hole					(Knock-Out)			Right trunking hole
(2-[27Knock-Out)
								(Knock-Out)			Power supply wiring hole
Front trunking hole									45	40
		40	45			75		40			(2-[27Knock-Out)
(Knock-Out)
								372363	27 55		Rear trunking hole
(Knock-Out)	92		27 55	732363	272392	73 63
											(Knock-Out)
											(Knock-Out)
	[ 92						[			[92
							92
Front piping hole						19	55			92	Rear piping hole
			65			92			65

1350	635371 21918 23								17			-PUHZ	-PUHZ	RP6YHA-PUHZRP5VHA-PUHZ	1RP5YHA-PUHZRP4VHA-PUHZ	RP4YHA-PUHZRP4VHA-PUHZ
												1RP6VHA	1RP5VHAPUHZ-
				Rear Air Intake						19			RP6VHA
							2-U Shaped notched holes
							(Foundation Bolt M10)
		175		600			175
			Installation Feet
ntake
Side Air I
	330							45	56	370	417
	30						66	42	53	28
				Air Discharge			2-12o36 Oval holes
							(Foundation Bolt M10)
				950
Handle for moving		322		Earth terminal
										Terminal connection
										Left • • • Power supply wiring
										Right • • Indoor/Outdoor wiring
									Service panel
									Handle for moving
												A
									1
									2		443	447
											w1	w1
												Front piping cover
							71					Rear piping cover
											Bottom piping hole
											(Knock-Out)
												RP·VHA1	A			Unit
	30	220	145	145	145	Drain hole							1,076
												RP·VHA
						(5-[33)										:
												RP·YHA	930			mm

8 WIRING DIAGRAM

PUHZ-RP1.6VHA

PUHZ-RP2VHA

PUHZ-RP2.5VHA

PUHZ-RP2.5VHA1

W1

PUHZ-RP3VHA

PUHZ-RP3VHA1

W2

W1 MODEL SELECT

MODELS					SW6							MODELS					SW6
1.6V	ON											2.5V	ON
	OFF												OFF
			1	2	3		4	5	6						1	2	3		4	5	6
2V	ON											3V	ON
	OFF												OFF
			1	2		3	4	5	6						1	2		3	4	5	6

W2 Only PUHZ-RP2.5, 3VHA.

17

PUHZ-RP4VHA

PUHZ-RP4VHA1

PUHZ-RP5VHA

PUHZ-RP5VHA1

W1

PUHZ-RP6VHA

PUHZ-RP6VHA1

Only PUHZ-RP4VHA1

PUHZ-RP5VHA1

PUHZ-RP6VHA1

W1 MODEL SELECT

MODELS SW6

ON

4V OFF

1 2 3 4 5 6

ON

5V OFF

1 2 3 4 5 6

ON

6V OFF

1 2 3 4 5 6

18

PUHZ-RP4YHA PUHZ-RP5YHA PUHZ-RP6YHA

C . B .

63H 63L

TH7 TH6 TH3 TH4

LEV

LEV

M-NET ADAPTER (OPTION)

1	4 5 6 7	CNF1	1 2 3	1 2 3 4	1 2
MF1		(WHT)	CN3N	TH7/6	TH3
				(RED)	(WHT)
1	4 5 6 7	CNF2
MF2		(WHT)			63H

F5	3
	TRANS
	1
	CNDC
	(PNK)

		F2
			CNAC
		F1	(WHT)
	CNS		1 2
		3 2 1	3 4
	(WHT)

1 2
TH4
(WHT)	1	3
	63L
(YLW) 3 1	(RED)

CN2

(WHT)

1 2 3 4 5 6 7

F3

F4

LED2			1	2		LED1	5	6		1	2	3	4		5		6			1	2		3			1	2	3	4	5	SW8SWPSW4SW5		SW1SW6			SW10SW9SW7
						3 4
				LEV-A							LEV-B							CNVMNT CNMNT
				(WHT)							(RED)									(WHT)							(WHT)							w1
											1	2		3		4		5		6	7	8		9		10	11121314
																					CNM
																																		CN31
																																						w1
																																					(WHT)
																																				CN3S
																																						3
																		CN4																				21
																(WHT)																				CNDM	(WHT)
																		2	1																			213

X52

X55

X51

CN51 (WHT)

1 2 3 4 5

21S4	SV2	SS
3 1 (GRN)	3 1 (BLU)	3 1 (WHT)

1 2 3 4 5	CN5 (WHT)
	LED2
	LED3
	LED4
1 2	CN2M (WHT)
	LED5
A B S	TB7
M-NET

SW11

SW1

SW12

LED1	CND (WHT)
	1 2 3

TB2

		S1
	INDOOR	S2
	UNIT
		S3

RED

ORN

21S4 SV

P . B .

		1 2 3	1 2 3 4 5 6 7
		CN7	CN2
	(WHT)		(WHT)
			+
			-
	CN4	(WHT)	+
1 2
1 2	CN5	(RED)	-
RS
			TB-P2	TB-C1
			CB1	CB2

<w1 MODEL SELECT>

MODELS

SW6

SW10

RP4Y

ON

ON

OFF

1

2

3

4

5

6

OFF

1

2

RP5Y

ON

ON

CT2

OFF

1

2

3

4

5

6

OFF

1

2

TB-W

BLK

ON

ON

TB-V

WHT

W

RP6Y

V

MC

OFF

1 2 3 4 5 6

OFF

1 2

RED

CT1

TB-U

U

TB-L3

BLK

TB-L2

WHT

TB-L1

RED

L3-OU

L3-A2

L2-OU

L2-A2

L1-OU

L1-A2

TB-N1

1 2 3 CN7

(WHT)

CONV.B.

CK			CK-OU
L1-A1	L1-IN	N-IN

N . F .

CNAC1

1

3

CNCT

1

2

1

3

CNAC2

ACL1

NO FUSE

(WHT)

(RED)

(RED)

TB1

BREAKER

LI1

LO1

L1

RED

RED

ACL2

POWER SUPPLY

L2

LI2

LO2

WHT

WHT

3N~

400V

L3

BLK

LI3

LO3

BLK

50Hz

ACL3

N

NI

NO

BLU

BLU

GD1

GD2

CNDC

1

3

CNL

ACL4

3

1

(PNK)

(BLU)

SYMBOL

NAME

SYMBOL

NAME

SYMBOL

NAME

TB1

Terminal Block <Power Supply >

N.F.

Noise Filter Circuit Board

SW10

Switch <Model Select>

TB2

Terminal Block <Indoor/Outdoor >

LI1/LI2/LI3/NI

Connection Terminal <L1/L2/L3/N-Power Supply>

SWP

Switch <Pump Down>

MC

Motor for Compressor

LO1/LO2/LO3/NO

Connection Terminal <L1/L2/L3/N-Power Supply>

CN31

Connector <Emergency Operation>

MF1,MF2

Fan Motor

CNAC1

Connector

CNAC

Connector

21S4

Solenoid Valve (Four-Way Valve)

CNAC2

Connector

CNS

Connector

SV

Solenoid Valve (Bypass Valve)

CNCT

Connector

CNDC

Connector

63H

High Pressure Switch

CNDC

Connector

21S4

Connector <Four-Way Valve>

63L

Low Pressure Switch

CNL

Connector

SV2

Connector <Bypass Valve>

TH3

Thermistor <Outdoor Pipe>

GD1

Connection Terminal <Ground>

SS

Connector <Connection for Option>

TH4

Thermistor <Discharge>

CONV.B

Converter Circuit Board

CN2

Connector

TH6

Thermistor <Outdoor 2-Phase Pipe>

L1-A1/IN

Connection Terminal <L1-Power Supply>

CN4

Connector

TH7

Thermistor <Outdoor>

L1-A2/OU

Connection Terminal <L1-Power Supply>

LEV-A/LEV-B

Connector <LEV>

LEV

Linear Expansion Valve

L2-A2/OU

Connection Terminal <L2-Power Supply>

63H

Connector <High Pressure Switch>

ACL1~ACL4

Reactor

L3-A2/OU

Connection Terminal <L3-Power Supply>

63L

Connector <Low Pressure Switch>

CB1,CB2

Main Smoothing Capacitor

N-IN

Connector

TH3

Connector <Thermistor>

CK

Capacitor

CK-OU

Connector

TH4

Connector <Thermistor>

RS

Rush Current Protect Resistor

CN7

Connector

TH7/6

Connector <Thermistor>

P.B.

Power Circuit Board

C.B.

Controller Circuit Board

CNF1/CNF2

Connector <Fan Motor Operation>

TB-U/V/W

Connection Terminal <U/V/W-Phase>

F1,F2

FUSE <6.3 A>

LED1/LED2

LED <Operatiion Inspection Indicators>

TB-L1/L2/L3

Connection Terminal <L1/L2/L3-Power Supply>

F3,F4

FUSE <6.3 A>

CNM

Connector <A-Control Service Inspection Kit>

TB-P2

Connection Terminal

SW1

Switch <Forced Defrost, Defect History Record

CNVMNT

Connector <Connect to Optional M-NET Adapter Board>

TB-C1

Connection Terminal

Reset, Refrigerant Adress>

CNMNT

Connector <Connect to Optional M-NET Adapter Board>

TB-N1

Connection Terminal

SW4

Switch <Test Operation>

CN3S

Connector < Connection for Option>

CT1, CT2

Current Trans

SW5

Switch <Function Switch>

CNDM

Connector < Connection for Option>

CN2

Connector

SW6

Switch <Model Select>

CN51

Connector < Connection for Option>

CN4

Connector

SW7

Switch <Function Switch>

CN5

Connector

SW8

Switch <Function Switch>

CN7

Connector

SW9

Switch <Function Switch>

M-NET ADAPTER

TB7

Terminal Block <M-NET connection >

SW12

Switch <Address setting. 2nd digit >

CN5

Connector <Transmission>

LED1

LED <Power Supply: DC5V>

CND

Connector <Power Supply>

LED2

LED <Connection to Outdoor Unit>

CN2M

Connector <M-NET communication>

LED3

LED <Transmission: Sending>

SW1

Switch <Status of communication>

LED4

LED <Transmission: Receiving>

SW11

Switch <Address setting: 1st digit>

LED5

LED <Power Supply: DC12V>

19

9 WIRING SPECIFICATIONS

Indoor unit – Outdoor unit wiring for PUHZ-RP1.6-6VHAand PUHZ-RP1.6-6VHA1

The cable shall not be lighter than design 245 IEC or 227 IEC.

The cable length may vary depending on the condition of installation, humidity or materials, etc.

Cross section	Wire size	Number	Polarity	L(m) 5
of cable	(mm2)	of wires
Round				(30)
	2.5	3	Clockwise : S1-S2-S3
				1
Flat			Not applicable	Not
	2.5	3		applicable
			(Because center wire has no cover finish)
				2
Flat				(18)
	1.5	4	From left to right : S1-Open-S2-S3
				3
Round			Clockwise : S1-S2-S3-Open	30
	2.5	4
			Connect S1 and S3 to the opposite angle	4

1 : In case that cable with stripe of yellow and green is available.

2 : In the flat cables are connected as this picture, they can be used up to 30m. (3C Flat cable 2)

S1 S2 S3

3 : In case of regular polarity connection (S1-S2-S3), wire size is 1.5mm2.4 : In case of regular polarity connection (S1-S2-S3).

5 : Mentioned cable length is just a reference value.

It may be different depending on the condition of installation, humidity or materials, etc.

Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections).

Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the intermediate connection point.

(If an intermediate connection is necessary, be sure to take measures to prevent water from entering the cables.)

20

Indoor unit – Outdoor unit wiring for PUHZ-RP4, 5, 6YHA

The cable shall not be lighter than design 245 IEC or 227 IEC.

For 4, 5, 6Y application, use shield wire. (For EMC DIRECTIVE)

The shield part must be grounded with the indoor unit or the outdoor unit, not with both.

The cable length may depending on the condition of installation, humidity or materials, etc.

		Wire No. o Size (E)
	Max. 45m	Max. 50m	Max. 80m
Indoor unit-Outdoor unit	3 o 1.5 (polar)	3 o 2.5 (polar)	3 o 2.5 (polar) and S3 separated
Indoor unit-Outdoor unit earth	1 o Min. 1.5	1 o Min. 2.5	1 o Min. 2.5

If 1.5E used, Max. 45m.

If 2.5E used, Max. 50m.

If 2.5E used and S3 separated, Max. 80m.

When the shield line is not used, several dB is exceeded with 30 ~ 40 MHz .

(There is a possibility to be used by the wireless for the ship etc. though it is not used for radio and TV.)

Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections).

Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the intermediate connection point.

(If an intermediate connection is necessary, be sure to take measures to prevent water from entering the cables.)

21

10	REFRIGERANT SYSTEM DIAGRAM
PUHZ-RP1.6VHA						Thermistor TH7
PUHZ-RP2VHA
					Heat exchanger	(Outdoor)
	Stop valve				Charge plug	Thermistor TH6
	(with service port)			Solenoid valve
						(Outdoor 2-phase pipe)
Refrigerant GAS pipe				(Four-way valve)
connection(1/2F)		Strainer				Thermistor TH3
		#50
						(Outdoor pipe)
				Muffler
						Distributor
					High pressure
					switch 63H
					Thermistor TH4
					(Discharge)
				Muffler
	Linear		Power	Compressor
	expansion valve B
			receiver
	Stop valve			Linear expansion valve A
Refrigerant LIQUID pipe
connection(1/4F)		Strainer		Strainer
		#100		#100
PUHZ-RP2.5VHA
PUHZ-RP2.5VHA1
PUHZ-RP3VHA						Thermistor TH7
PUHZ-RP3VHA1					Heat exchanger
						(Outdoor)
	Ball valve Strainer		4-way valve			Thermistor TH6
Refrigerant GAS pipe		#50				(Outdoor 2-phase pipe)
connection(5/8F)				Oil separator
					Charge plug	Thermistor TH3
				Bypass valve
					(High pressure)	(Outdoor pipe)
		Charge plug		Capillary tube
		(Low pressure)		O.D.4.0OI.D.2.4OL500		Distributor
			Capillary tube		High pressure
					switch 63H
			O.D.2.5OI.D.0.6OL1000
				Strainer
				#100
					Thermistor TH4
		Strainer			(Discharge)
		#100
			Power	Muffler Compressor
	Stop valve		receiver
				Linear expansion valve A
	(with service port)		Linear
Refrigerant LIQUID pipe			expansion
			valve B
connection(3/8F)
		Strainer		Strainer
		#100		#100

22

PUHZ-RP4VHA

PUHZ-RP5VHA

PUHZ-RP6VHA

Ball valve

Refrigerant GAS pipe connection(5/8F)

			Thermistor TH7
		Heat exchanger	(Outdoor)
Strainer	Solenoid valve		Thermistor TH6
			(Outdoor 2-phase pipe)
#50	(Four-way valve)
		Charge plug	Thermistor TH3
			(Outdoor pipe)
		(High pressure)
Charge plug	Muffler
(Low pressure)	Low pressure		Distributor
	switch 63L	High pressure
	Strainer
		switch 63H	Capillary tube
	#100		(O.D.4.0OI.D.3.0OL200)O2pcs

	Strainer	Thermistor TH4
		(Discharge)
	#100

	Linear	Power	Strainer	Compressor
	expansion valve B		#100
	Stop valve	receiver
			Linear expansion valve A
	(with service port)	Restrictor
Refrigerant LIQUID pipe
		valve
connection(3/8F)	Strainer			Strainer
	#100	Strainer		#100
		#100
			Replace filter	Solenoid valve
				(Bypass valve)

PUHZ-RP4VHA1 PUHZ-RP4YHA

PUHZ-RP5VHA1 PUHZ-RP5YHA

PUHZ-RP6VHA1 PUHZ-RP6YHA

	Ball valve Strainer	Solenoid valve
Refrigerant GAS pipe	#50	(Four-way valve)
connection(5/8F)

Charge plug (Low pressure)

Muffler

Low pressure switch 63L

Strainer #100

	Thermistor TH7
Heat exchanger	(Outdoor)
	Thermistor TH6
	(Outdoor 2-phase pipe)
Charge plug	Thermistor TH3
	(Outdoor pipe)
(High pressure)
	Distributor
High pressure
switch 63H

	Strainer	Thermistor TH4
		(Discharge)
	#100

	Linear	Power	Strainer	Compressor
	expansion valve B		#100
	Stop valve	receiver
			Linear expansion valve A
	(with service port)	Restrictor
Refrigerant LIQUID pipe
		valve
connection(3/8F)	Strainer			Strainer
	#100	Strainer		#100
		#100
			Replace filter	Solenoid valve
				(Bypass valve)

23

<Table 4> Required additional charge when the pipe size is larger than the standard diameter Liquid pipe dia Chargeless Max. pipe length Refrigerant amount to be added

RP1.6, 2 [9.52 20m 30m 60 g per 1 m longer than 20 m

RP2.5, 3 [12.7 20m 30m 100 g per 1 m longer than 20 m

RP4-6 [12.7 20m 50m 100 g per 1 m longer than 20 m

24

Applicable extension pipe for each model

The height difference between indoor and outdoor unit should be kept within 30 m for all models.

(1) 1:1 system

(a) Maximum pipe length

<Table 1> Pipe length for 1:1 system

	Liquid		OD		[6.35			[9.52			[12.7
	pipe	Thick-			t0.8			t0.8			t0.8
	(mm)
			ness
	Gas		OD	[9.52	[12.7	[15.88	[12.7	[15.88	[19.05	[15.88	[19.05
	pipe	Thick-		t0.8	t0.8	t1.0	t0.8	t1.0	t1.0	t1.0	t1.0
	(mm)
			ness
	RP1.6			30m	50m	30m	30m	30m (*1)
	RP2			10m	50m	30m	30m	30m (*1)
	RP2.5				10m	10m	30m	50m		30m
	RP3				10m	10m	30m	50m		30m
	RP4							75m (*2)	50m (*1)	50m	50m (*1)
	RP5							75m (*2)	50m (*1)	50m	50m (*1)
	RP6							75m (*2)	50m (*1)	50m	50m (*1)

*1: Set DIP SW8-1 on outdoor unit controller board to ON.

*2: The maximum length is 50 m in case of using existing pipes.

[Marks in the table above]

: Standard piping

: It can be used, however, additional refrigerant charge is required when the pipe length exceeds 20m. Refer to <table 4>.

: It cannot be used.

: It can be used.

: It can be used, however, the capacity is lowered. Refer to (c) Capacity correction.

(b) Adjusting the amount of refrigerant

•Additional refrigerant charge is not necessary for the pipe length up to 30 m. When the pipe length exceeds 30 m or service (refrigerant replacement) is performed, charge proper amount of refrigerant for each pipe length referring to table below. Use refrigerant R410A. Use charge hose exclusive for R410A.

•When charging additional refrigerant, charge the refrigerant from low-pressure side of the port valve using a safety charger.

•Make sure that air purge for this unit at refrigerant replacement is performed from both high-pressure check valve and service port. If air purge is performed only from one of them, air in not purged enough.

•When replacing refrigerant, charge the refrigerant from service port. When charged refrigerant is less than specified amount, charge the refrigerant again from low pressure side of the port valve using a safety charger.

•Tighten the service port cap (nut) of stop valve firmly. The tightening torque is 12 to 16 N·m. (to prevent slow-leak)

•Check additional refrigerant charging amount referring to table 4 when liquid pipe is one size larger than standard diameter, and table 2 when the pipe is standard diameter.

<Table 2> Additional refrigerant charging amount for pipe of standard diameter
				Permitted		Additional refrigerant charging amount for pipe						Number of	Height
	Outdoor unit						length exceeding 30 m (kg)
				pipe length								bends	difference
						31 — 40m		41 — 50m	51 — 60m	61 — 75m
	PUHZ-RP1.6, 2VHA			50m or less		0.2kg		0.4kg	—	—			30m or
	PUHZ-RP2.5, 3VHA, 2.5, 3VHA1			50m or less		0.6Kg		1.2Kg	—	—		15
													above
	PUHZ-RP4-6VHA, RP4-6VHA1, RP4-6YHA			75m or less		0.6kg		1.2kg	1.8kg	2.4kg
<Table 3>
	Outdoor unit			Permitted			Recharge refrigerant amount or additional amount in parentheses
				pipe length		10m or below		11 — 20m	21 — 30m	31 — 40m		41 — 50m	51 — 60m	61 — 75m
	PUHZ-RP1.6, 2VHA			50m or less		2.1		2.3	2.5	2.7		2.9	—	—
										(0.2)		(0.4)	—	—
	PUHZ-RP2.5, 3VHA			50m or less		3.1		3.3	3.5	4.1		4.7	—	—
	PUHZ-RP2.5, 3VHA1									(0.6)		(1.2)	—	—
	PUHZ-RP4-6VHA			75m or less		5.1		5.3	5.5	6.1		6.7	7.3	7.9
										(0.6)		(1.2)	(1.8)	(2.4)
	PUHZ-RP4-6VHA1			75m or less		4.6		4.8	5.0	5.6		6.2	6.8	7.4
	PUHZ-RP4-6YHA									(0.6)		(1.2)	(1.8)	(2.4)

(c) Capacity correction

Cooling and heating capacity is lowered according to pipe length. Capacity can be obtained by referring to the capacity curves below. When the diameter of gas pipe is one size smaller than standard diameter, cooling capacity is lowered comparing to the standard diameter. The lowered capacity can be obtained by referring to capacity curves for gas pipe which is one size smaller than standard size.

Corrected pipe length (m) = actual pipe length (m) + number of bends x 0.3 (m)

1 Capacity curves for PUHZ-RP • HAmodel <Standard size>

Cooling

Capacity ratio [%]

100

95

90

85

80

75

70

Cooling RP1.6, 2.5 models

Cooling RP3 model

Note: The permitted pipe length is up to 55m for RP1.6, 2, 2.5, 3 model.

Heating

Heating RP1.6, 2, 2.5, 3, 4, 5 and 6 models (Up to 55m for RP1.6, 2, 2.5, 3 model)

Cooling RP2, 4 models

Cooling RP5 model

Cooling RP6 model

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

80

Corrected pipe length

2Capacity curve for PUHZ-RP1.6, 2 models

<When gas pipe is one size smaller than standard size>

Capacity ratio [%]

100

Heating RP1.6, RP2

95

90

Cooling RP2

85

Cooling RP1.6

80

5

10

15

20

25

30

35

40

45

50

55

Corrected pipe length

25

3Capacity curve for PUHZ-RP2.5, 3 models

<When gas pipe is one size smaller than standard size>

	100
							Heating RP2.5, RP3
	95
ratio [%]	90
Capacity
							Cooling RP2.5
	85						Cooling RP3
	80	10	15	20	25	30	35	40	45	50	55
	5

Corrected pipe length

4 When gas pipe is one size larger than standard size for PUHZ-RP4, 5 and 6.

1 Capacity can be obtained by referring to capacity curves of standard size.

26

1. Refrigerant collecting (pump down)

Perform the following procedures to collect the refrigerant when moving the indoor unit or the outdoor unit.

1Before collecting the refrigerant, first make sure that the all of the SW5 DIP switches for function changes on the control board of the outdoor unit are set to OFF. If all of the SW5 switches are not set to OFF, record the settings and then set all of the switches to OFF. Now, start refrigerant collecting operation. After moving the unit to a new location and completing the test run, set the SW5 switches to the previously recorded settings.

2Turn on the power supply (circuit breaker).

wWhen power is supplied, make sure that “CENTRALLY CONTROLLED” is not displayed on the remote controller. If “CENTRALLY CONTROLLED” is displayed, the refrigerant collecting (pump down) cannot be completed normally.

3After the liquid stop valve is closed, set the SWP switch on the control board of the outdoor unit to ON. The compressor (outdoor unit) and ventilators (indoor and outdoor units) start operating and refrigerant collecting operation begins. LED1 and LED2 on the control board of the outdoor unit are lit.

wSet the SWP switch (push-button type) to ON in order to perform refrigerant collecting operation only when the unit is stopped. However, refrigerant collecting operation cannot be performed until compressor stops even if the unit is stopped. Wait three minutes until compressor stops and set the SWP switch to ON again.

4Because the unit automatically stops in about two to three minutes after the refrigerant collecting operation (LED1 is not lit and LED2 is lit), be sure to quickly close the gas stop valve.

wIn case the outdoor unit is stopped when LED1 is lit and LED2 is not lit, open the liquid stop valve completely, and then repeat step 3 three minutes later.

wIf the refrigerant collecting operation has been completed normally (LED1 is not lit and LED2 is lit), the unit will remain stopped until the power supply is turned off.

5Turn off the power supply (circuit breaker.)

2. Unit replacement operation

When reusing the existing pipes that carried R22 refrigerant for the RP4, RP5 and RP6 models, replacement operation must be performed before performing a test run.

1If new pipes are used, these procedures are not necessary.

2If existing pipes that carried R22 refrigerant are used for the RP3 model, these procedures are not necessary. (The replacement operation cannot be performed.)

3During replacement operation, “C5” is displayed on “A-Control Service Tool(PAC-SK52ST)”. (This is applied to only RP4, RP5 and RP6 models.)

• Replacement operation procedures 1Turn on the power supply.

2Set DIP switch SW8-2 on the control board of the outdoor unit to ON to start replacement operation.

•The replacement operation is performed using the cooling system. Cool air will flow from the indoor unit during the replacement operation.

•During the replacement operation, TEST RUN is displayed on the remote controller and LED1 (green) and LED2 (red) on the control board of the outdoor unit flash together.

3Replacement operation requires at least two hours to complete.

•After setting switch SW8-2 to ON, the unit automatically stops after two hours.

•Replacement operation can be performed repeatedly by setting switch SW8-2 from OFF to ON. Make sure to perform the operation more than 2 hours. (If the operation is performed less than 2 hours, the existing pipes cannot be cleaned enough and the unit may be damaged.)

•If replacement operation is performed over 2 hours, this action is recorded into nonvolatile memory of control board.

4Set switch SW8-2 to OFF. (Replacement operation is completed.)

wThe unit can be operated normally by remote controller even if SW8-2 remains ON.

wIf the indoor temperature is less than 15:, the compressor will operate intermittently but the unit is not faulty.

3. Start and finish of test run

•Operation from the indoor unit

Execute the test run using the installation manual for the indoor unit.

•Operation from the outdoor unit

By using the DIP switch SW4 on the control board of outdoor unit, test run can be started and finished, and its operation

	mode (cooling/heating) can be set up.		<SW4>
	1Set the operation mode (cooling/heating) using SW4-2.
	2Turn on SW4-1 to start test run with the operation mode set by SW4-2.		C D
	3Turn off SW4-1 to finish the test run.	ON
	• There may be a faint knocking sound around the machine room after power is supplied, but this is	OFF
			1		2
	no problem with product because the linear expansion pipe is just moving to adjust opening pulse.
			A B
	• There may be a knocking sound around the machine room for several seconds after compressor
		A Stop			C operation
	starts operating, but this is no problem with product because the check valve, itself, generates the
	sound because pressure difference is small in the refrigerant circuit.	B Cooling			D Heating

Note:

The operation mode cannot be changed by SW4-2 during test run. (To change test run mode, stop the unit by SW4-1, change the operation mode and restart the test run by SW4-1.)

27

11 TROUBLESHOOTING

11-1. TROUBLESHOOTING

<Error code display by self-diagnosis and actions to be taken for service (summary)>

Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit. Actions to be taken for service, which depends on whether or not the inferior phenomenon is reoccurring at service, are summarized in the table below. Check the contents below before investigating details.

Unit conditions at service	Error code	Actions to be taken for service (summary)
	Displayed	Judge what is wrong and take a corrective action according
		to “1-4. Self-diagnosis action table”.
The inferior phenomenon is
reoccurring.		Conduct trouble shooting and ascertain the cause of the
	Not displayed	inferior phenomenon according to “1-5. Troubleshooting
		by inferior phenomena”.
		1Consider the temporary defects such as the work of
		protection devices in the refrigerant circuit including
		compressor, poor connection of wiring, noise and etc.
		Re-check the symptom, and check the installation
		environment, refrigerant amount, weather when the
	Logged	inferior phenomenon occurred, matters related to wiring
		and etc.
		2Reset error code logs and restart the unit after finishing
		service.
		3There is no abnormality concerning of parts such as
		electrical component, controller board, remote controller
The inferior phenomenon is		and etc.
not reoccurring.		1Re-check the abnormal symptom.
		2Conduct trouble shooting and ascertain the cause of the
		inferior phenomenon according to “1-5. Troubleshooting
	Not logged	by inferior phenomena”.
		3Continue to operate unit for the time being if the cause
		is not ascertained.
		4There is no abnormality concerning of parts such as
		electrical component, controller board, remote controller
		and etc.

28

11-2. CHECK POINT UNDER TEST RUN (MA remote controller)

(1) Before test run

•After installation of indoor and outdoor units, piping work and electric wiring work, re-check that there is no refrigerant leakage, loosened connections and incorrect polarity.

•Measure impedance between the ground and the power supply terminal block(L, N) on the outdoor unit by 500V Merger and

check that it is 1.0M" or over.

wDon’t use 500V Merger to indoor/outdoor connecting wire terminal block(S1, S2, S3) and remote controller terminal block (1, 2). This may cause malfunction.

•Make sure that test run switch (SW4) is set to OFF before turning on power supply.

•Make sure that all of the SW5 switches for function changes on the control board of the outdoor unit are set to OFF. If all of the SW5 switches are not set to OFF, record the settings and then set all of the switches to OFF. And perform emergency operation. After finishing emergency operation, set the SW5 switches to the recorded settings.

•Turn on power supply twelve hours before test run in order to protect compressor.

•For specific models which requires higher ceiling settings or auto-recovery feature from power failure, make proper changes of settings referring to the description of “Selection of Functions through Remote Controller”.

Make sure to read operation manual before test run. (Especially items to secure safety.)

11-2-1. Test run by remote controller

	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
					FILTER
					CHECK TEST
PAR-20MAA	TIMER SET

TEST RUN button TEST RUN display

LIQUID PIPE TEMPERATURE display

	Operating procedures		While the room temperature display on the remote
			controller is “H0”, the remote controller is disabled.
	1.	Turn on the main power supply.	Wait until “H0” disappears before using remote controller.
			“H0” appears for about 2 minutes after power supply is
			turned on. w1
	2.	Press TEST RUN button twice.	The		appears on the screen.
				TEST RUN
	3. Press OPERATION SWITCH		Cooling mode: Check if cool air blows and water is drained.
			Heating mode: Check if warm air blows. (It takes a little
		button.
				while until warm air blows.)
	4.	Press AIR DIRECTION button.	Check for correct motion of auto-vanes.
	5.	Check the outdoor unit fan for	The outdoor unit features automatic capacity control to
		correct running.	provide optimum fan speeds. Therefore, the fan keeps
			running at a low speed to meet the current outside air

condition unless it exceeds its available maximum power. Then, in actuality, the fan may stop or run in the reverse direction depending on the outside air, but this does not mean malfunction.

6.Press the ON/OFF button to reset the test run in progress.

7.Turn off the main power supply.

•In case of test run, the OFF timer will be activated, and the test run will automatically stop after two hours.

•The room temperature display section shows the pipe temperature of indoor units during the test run.

•Check that all the indoor units are running properly in case of simultaneous twin and triple operation. Malfunctions may not

be displayed regardless of incorrect wiring.

w1 After turning on the power supply, the system will go into startup mode, “H0” will blink on the display section of the room temperature, and lamp(red) of the remote controller will flash.

As to INDOOR BOARD LED, LED1 and LED2 will be lit up in case the address is 0, or turned off in case the address is not 0. LED3 will blink.

As to OUTDOOR BOARD LED, LED1(green) and LED2(red) will light up. (After the startup mode of the system finishes, LED2(red) will be turned off.)

In case OUTDOOR BOARD LED is digital display,

—

and

—

will be displayed alternately every second.

•If one of the above operations doesn’t function correctly, the causes written below should be considered. Find causes from the symptoms.

The below symptoms are under test run mode. “startup” in the table means the display status of w1 written above.

	Symptoms in test run mode		Cause
	Remote Controller Display	OUTDOOR BOARD LED Display
		< > indicates digital display.
	Remote controller displays “H0”, and	After “startup” is displayed, only	• After power is turned on, “H0” is displayed for 2 minutes during
	cannot be operated.	green lights up. <00>	system startup. (Normal)
		After “startup” is displayed,	• Incorrect connection of outdoor terminal block (L, N and S1,
		green(once) and red(once) blink
	After power is turned on, “H0” is displayed	alternately. <F1>	S2, S3.)
	for 3 minutes, then error code is
		After “startup” is displayed,
	displayed.
		green(once) and red(twice) blink	• Outdoor unit’s safeguard installation connector is open.
		alternately. <F3, F4, F9>
		After “startup” is displayed,	• Incorrect wiring between the indoor and outdoor unit (Polarity
	No display appears even when remote	green(twice) and red(once) blink	is wrong for S1, S2, S3.)
		alternately. <EA. Eb>	• Remote controller transmission wire short.
	controller operation switch is turned on.
		After “startup” is displayed, only	• There is no outdoor unit of address 0.
	(Operation lamp does not light up.)
		green lights up. <00>	(Address is other than 0.)
			• Remote controller transmission wire burnout.
	Display appears but soon disappears	After “startup” is displayed, only	• After canceling function selection, operation is not possible for
	even when remote controller is operated.	green lights up. <00>	about 30 seconds. (Normal)

29

wPress the remote controller’s CHECK button twice to perform self-diagnosis. See the table below for the contents of LCD display.

LCD	Contents of inferior phenomena	LCD		Contents of inferior phenomena
P1	Abnormality of room temperature thermistor	U1~UP	Malfunction outdoor unit
P2	Abnormality of pipe temperature thermistor/Liquid	F3~F9	Malfunction outdoor unit
P4	Abnormality of drain sensor	E0~E5	Remote controller transmitting error
P5	Drain overflow protection is working.	E6~EF	Indoor/outdoor unit communication error
P6	Freezing/overheating protection is working.	----	No	error history
P8	Abnormality of pipe temperature	FFFF	No applied unit
P9	Abnormality of pipe temperature thermistor/Cond./Eva

See the table below for details of the LED display (LED 1, 2, 3) on the indoor controller board.

	LED1 (microcomputer power supply)	Lits when power is supplied.
	LED2 (remote controller)	Remote controller
		The indoor unit should be connected to the outdoor unit with address “0” setting.
	LED3 (indoor/outdoor communication)	Flash when indoor and outdoor unit are communicating.

11-2-2. Test run by outdoor unit SW4

The setting of test run (ON/OFF) and its operation mode (cooling/heating) can be set by SW4 on the controller board of outdoor unit. Check that SW5-1 is set to OFF before performing test run. If SW5-1 is set to ON, turn it OFF and then perform test run. After finishing test run, set SW5-1 back to ON.

1Set operation mode(cooling or heating) by SW4-2.

2Start test run by setting SW4-1 to ON (

) with the indicated operation mode of SW4-2.

SW4

(Factory setting)

3Finish test run by setting SW4-1 to OFF (

).

C D

• Operation mode cannot be changed by SW4-2 during test run.

A Stop

ON

Stop test run to change operation mode by SW4-1, and restart test run by SW4-1 after

B Cooling

the mode is changed.

C Operation

• Test run automatically stops 2 hours later by 2-hour OFF timer function.

1 2

D Heating

• Test run can be performed by the remote controller.

A B

• The remote controller display of test run by outdoor unit is the same as that of test run by

remote controller.

30