Mitsubishi Electric PUHZ-RP35VHA2 User manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES................................. 3
2. REFERENCE MANUAL.................................. 4
3. SAFETY PRECAUTION..................................5
4. FEATURES......................................................9
5. SPECIFICATIONS.........................................10
6. DATA............................................................. 13
7. OUTLINES AND DIMENSIONS.................... 20
8. WIRING DIAGRAM....................................... 25
9. WIRING SPECIFICATIONS.......................... 35
10. REFRIGERANT SYSTEM DIAGRAM............... 40
11. TROUBLESHOOTING...................................43
12. FUNCTION SETTING.................................. 110
13. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER
..... 117
14. EASY MAINTENANCE FUNCTION............127
15. DISASSEMBLY PROCEDURE................... 132
16. PARTS LIST................................................ 154
17. RoHS PARTS LIST..................................... 165
No.OC374
REVISED EDITION-F
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
R410A
May 2009
Outdoor unit
[model names]
PUHZ-RP35VHA2 PUHZ-RP35VHA3
PUHZ-RP50VHA2 PUHZ-RP50VHA3
PUHZ-RP60VHA2 PUHZ-RP60VHA3
PUHZ-RP71VHA2 PUHZ-RP71VHA3
PUHZ-RP100VHA2 PUHZ-RP100VHA3
PUHZ-RP125VHA2
PUHZ-RP140VHA2
PUHZ-RP100YHA2 PUHZ-RP100YHA3
PUHZ-RP125YHA2
PUHZ-RP140YHA2
[Service Ref.]
Service Ref. is on page 2.
PUHZ-RP60VHA2 PUHZ-RP60VHA21
PUHZ-RP71VHA2 PUHZ-RP71VHA21
PUHZ-RP60VHA3 PUHZ-RP71VHA3
PUHZ-RP60VHA3#1 PUHZ-RP71VHA3#1
NOTE:
• This manual describes only
service data of the outdoor
units.
• RoHS compliant products have
<G> mark on the spec name
plate.
• For servicing of RoHS compli-
ant products, refer to the RoHS
PARTS LIST.
Revision:
• "17. RoHS PARTS LIST" has
been modified.
• Please void OC374 REVISED
EDITION-E.

PUHZ-RP35/50VHA21PUHZ-RP35/50VHA3
· Muffler has been changed.
· Compressor (MC) has been changed.
· Controller circuit board (C.B.) and power circuit board (P.B.) have been changed.
PUHZ-RP60/71VHA21PUHZ-RP60/71VHA3
· Compressor (MC) and oil(type and amount) have been changed.
· Refigerant circiuit has been changed.
· Ball valve (Gas) Stop valve
· Controller circuit board (C.B.) has been changed.
PUHZ-RP100VHA21PUHZ-RP100VHA3
· Compressor (MC) has been changed.
· Controller circuit board (C.B.) and power circuit board (P.B.) have been changed.
PUHZ-RP100YHA21PUHZ-RP100YHA3
· Compressor (MC) has been changed.
· Controller circuit board (C.B.) has been changed.
1TECHNICAL CHANGES
PUHZ-RP60 / 71VHA3 PUHZ-RP60 / 71VHA3#1
· Add thermistor (Comp. Shell / TH32).
· Thermistor (Discharge / TH4) has been changed.
· Controller circuit board (C.B.) has been changed.
PUHZ-RP100VHA3 PUHZ-RP100VHA3#1
PUHZ-RP100YHA3 PUHZ-RP100YHA3#1
PUHZ-RP125 / 140VHA21PUHZ-RP125 / 140VHA2#2
PUHZ-RP125 / 140YHA21PUHZ-RP125 / 140 YHA2#2
·Add thermistor (Comp. Shell / TH32).
· Thermistor (Discharge / TH4) has been changed.
· Controller circuit board (C.B.) has been changed
· Compressor (MC) has been changed.
· Propeller fan has been changed.
3
Revision:
"17. RoHS PARTS LIST " has been modified on page 171, 177 and 181.
Page Revise point Service Ref. Incorrect Correct
171
FUNCTIONAL AND
ELECTRICAL PARTS
No.33
THERMISTOR (SHELL)
PUHZ-RP60/71VHA3#1 T7W E39 202 T7W E11 201
177
FUNCTIONAL AND
ELECTRICAL PARTS
No.37
THERMISTOR (SHELL)
PUHZ-RP100VHA3#1
PUHZ-RP125/140VHA2#2
T7W E39 202 T7W E11 201
181
FUNCTIONAL AND
ELECTRICAL PARTS
No.40
THERMISTOR (SHELL)
PUHZ-RP100YHA3#1
PUHZ-RP125/140YHA2#2
T7W E39 202 T7W E11 201

4
2REFERENCE MANUAL
2-1. INDOOR UNIT SERVICE MANUAL
Model name Service Ref. Service
Manual No.
PLA-RP35/50/60/71AA
PLA-RP35/50/60/71AA.UK OC335
PLA-RP35/50/60/71AA OC327
OC328
PLA-RP100/125/140AA2 PLA-RP100/125/140AA2.UK
PCA-RP50/60/71/100/125/140GA
PCA-RP50GA2
PCA-RP50/60/71/100/125/140GA
PCA-RP50GA2
OC329
PCA-RP71/125HA PCA-RP71/125HA
OC330
PKA-RP35/50GAL PKA-RP35/50GAL
OC331
PKA-RP60/71/100FAL
PKA-RP50FAL2
PKA-RP60/71/100FAL
PKA-RP50FAL2
OC332
PSA-RP71/100/125/140GA PSA-RP71/100/125/140GA
PEAD-RP50/60/71/125/140EA PEAD-RP50/60/71/125/140EA.UK
PEAD-RP35/100EA2 PEAD-RP35/100EA2.UK
PEAD-RP60/71/100GA PEAD-RP60/71/100GA.UK
2-2.TECHNICAL DATA BOOK
Manual No. OCS05
OC357
PLA-RP35/50/60/71/100/125/140BA
PLA-RP71/100/125BA2
PLA-RP35/50/60/71/100/125/140BA.UK
PLA-RP71/100/125BA2.UK
OCH412
OCB412
HWE05210
HWE05060
PUHZ-RP35/50/60/71VHA2 PUHZ-RP35/50/60/71VHA21
· Electrical parts have been changed.
Controller circuit board (C.B.) , Power circuit board (P.B.) , Noise filter circuit board (N.F.)
PUHZ-RP100/125/140VHA2 PUHZ-RP100/125/140VHA21
· Compressor (MC) has been changed.
· Electrical parts have been changed.
Controller circuit board (C.B.) , Power circuit board (P.B.) , Noise filter circuit board (N.F.) , Active filter module (ACTM)
PUHZ-RP100/125/140YHA2 PUHZ-RP100/125/140YHA21
· Compressor (MC) has been changed.
· Electrical parts have been changed.
Controller circuit board (C.B.) , Power circuit board (P.B.) , Noise filter circuit board (N.F.)

5
3SAFETY PRECAUTION
Cautions for units utilizing refrigerant R410A
3-2. CAUTIONS RELATED TO NEW REFRIGERANT
Use new refrigerant pipes.
Make sure that the inside and outside of refrige-
rant 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.
Store the piping to be used indoors during
installation and both ends of the piping sealed
until just before brazing. (Leave elbow joints, etc.
in their packaging.)
Use ester oil, ether oil or alkylbenzene oil (small
amount) as the refrigerant oil applied to flares
and flange connections.
In case of using the existing pipes for R22, be careful with
the followings.
· For RP60/71VHA3 and RP100/125/140, 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.
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 refrige-
rant 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.
Handle tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigera-
nt will change and the efficiency will be lowered.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
Contamination inside refrigerant piping can cause deterio-
ration of refrigerant oil etc.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
If large amount of mineral oil enters, that can cause deterio-
ration of refrigerant oil etc.
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 recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
· Check that cylinder for R410A on the market is syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
3-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to termnal, all supply
ciucuits must disconnected.

6
Gravimeter
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. Tool name Specifications
1Gauge manifold ·Only for R410A
·Use the existing fitting specifications. (UNF1/2)
·Use high-tension side pressure of 5.3MPa·G or over.
2Charge hose ·Only for R410A
·Use pressure performance of 5.09MPa·G or over.
3Electronic scale
4Gas leak detector ·Use the detector for R134a, R407C or R410A.
5Adaptor for reverse flow check ·Attach on vacuum pump.
6Refrigerant charge base
7Refrigerant cylinder ·Only for R410A ·Top of cylinder (Pink)
·Cylinder with syphon
8Refrigerant recovery equipment
[4] Refrigerant leakage detection function
This air conditioner (outdoor unit PUHZ-RP•HA2/HA3) can detect refrigerant leakage which may happen during a
long period of use. In order to enable the leakage detection, settings are required to let the unit memorize the initial
conditions(initial learning). Refer to 14-3. INITIAL SETTINGS FOR REFRIGERANT LEAKAGE DETECTION FUNCTION.