Mitsubishi Electric PUHZ-HRP100VHA User manual

SERVICE MANUAL No.OCH425
REVISED EDITION-D
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
R410A
October 2011
PUHZ-HRP71VHA
PUHZ-HRP100VHA
PUHZ-HRP100YHA
PUHZ-HRP125YHA
Note:
• This manual describes only
service data of the outdoor
units.
• RoHS compliant products
have <G> mark on the spec
name plate.
PARTS CATALOG (OCB425)
Outdoor unit
[Model names]
PUHZ-HRP71VHA
PUHZ-HRP100VHA
PUHZ-HRP100YHA
PUHZ-HRP125YHA
PUHZ-HRP71VHA2
PUHZ-HRP100VHA2
PUHZ-HRP100YHA2
PUHZ-HRP125YHA2
[Service Ref.]
PUHZ-HRP71VHA
PUHZ-HRP100VHA
PUHZ-HRP100YHA
PUHZ-HRP125YHA
PUHZ-HRP71VHA2
PUHZ-HRP71VHA2R1
PUHZ-HRP100VHA2
PUHZ-HRP100VHA2R1
PUHZ-HRP100VHA2R2
PUHZ-HRP100YHA2
PUHZ-HRP100YHA2R1
PUHZ-HRP125YHA2
PUHZ-HRP125YHA2R1
CONTENTS
1. TECHNICAL CHANGES·······························2
2. REFERENCE MANUAL································2
3. SAFETY PRECAUTION ·······························3
4. FEATURES ···················································7
5. SPECIFICATIONS ········································8
6. DATA·····························································9
7. OUTLINES AND DIMENSIONS··················12
8. WIRING DIAGRAM·····································14
9. WIRING SPECIFICATIONS························20
10. REFRIGERANT SYSTEM DIAGRAM········25
11. TROUBLESHOOTING································27
12. FUNCTION SETTING·································85
13. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ····92
14. EASY MAINTENANCE FUNCTION·········102
15. DISASSEMBLY PROCEDURE·················107
Revision:
• "11-10 FUNCTION OF
SWITCHES, CONNECTORS
AND JUMPERS" has been
modified in REVISED
EDITION-D. (See page 80)
• Some descriptions have been
modified.
• Please void OCH425
REVISED EDITION-C.

2
1TECHNICAL CHANGES
2REFERENCE MANUAL
PUHZ-HRP100VHA2R1 PUHZ-HRP100VHA2R2
• Outdoor controller board (C.B.) has been changed. (S/W version up)
PUHZ-HRP 71VHA2 PUHZ-HRP 71VHA2R1
PUHZ-HRP100VHA2 PUHZ-HRP100VHA2R1
PUHZ-HRP100YHA2 PUHZ-HRP100YHA2R1
PUHZ-HRP125YHA2
PUHZ-HRP125YHA2R1
• Replace filter has been deleted.
• Outdoor controller board (C.B.) has been changed. (S/W version up)
1. DRAIN HOSE HEATER (option: PAC-SE60RA-E) is connectable.
2. The starting temperature of FLASH INJECTION is settable.
PUHZ-HRP 71VHA PUHZ-HRP 71VHA2
PUHZ-HRP100VHA PUHZ-HRP100VHA2
• Pressure sensor (63HS) has been added.
• Compressor (MC) has been changed.
ANB33FJCMT ANB33FJEMT
• Thermistor (Discharge / TH4) has been changed.
• Fan motors (MF1,2) have been changed.
• Fan grilles have been changed.
• Electrical parts have been changed.
Controller circuit board (C.B.), Power circuit board (P.B.),
Noise filter circuit board (N.F.) and Active filter module (ACTM) (including P.B.)
PUHZ-HRP100YHA PUHZ-HRP100YHA2
PUHZ-HRP125YHA
PUHZ-HRP125YHA2
• Pressure sensor (63HS) has been added.
• Compressor (MC) has been changed.
ANB33FJBMT
ANB33FJDMT
• Thermistor (Discharge / TH4) has been changed.
• Fan motors (MF1,2) have been changed.
• Fan grilles have been changed.
• Controller circuit board (C.B.) has been changed.
2-1. INDOOR UNIT SERVICE MANUAL
Model name Service Ref. Service
Manual No.
PLA-RP35/50/60/71/100/125BA
PLA-RP100/125/140BA2 PLA-RP35/50/60/71/100/125BA(1).UK/BA#2.UK
PLA-RP100/125/140BA2.UK OCH412 OCB412
PLA-RP100BA3 PLA-RP100BA3 OCH459
OCB459
PKA-RP60/100KAL PKA-RP60100KAL.TH OCH452
OCB452
PKA-RP60/100FAL PKA-RP50FAL2 PKA-RP60/100FAL PKA-RP50FAL2 OC331
PKA-RP50HAL PKA-RP50HAL OCH453
OCB453
PEAD-RP50/60/71/100/125/JA(L) PEAD-RP50/60/71/100/125/JA(L)(R1).UK HWE08130
BWE09220
PEAD-RP50/60/71/125EA
PEAD-RP100EA2 PEAD-RP50/60/71/125EA.UK PEAD-RP100EA2.UK HWE05210
PEA-RP60/71/100GA PEA-RP60/71/100GA.UK HWE05060
2-2. TECHNICAL DATABOOK
MANUAL NO. OCS11
OCH425D

3
3SAFETY PRECAUTION
3-2. CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R410A
Use new refrigerant pipes.
Make sure that the inside and outside of refrige-
rant piping is clean and it has no contaminants
such as sulfur, oxides, dirt, shaving particles, etc,
which are hazard to refrigerant cycle.
In addition, use pipes with specified thickness.
Store the piping to be used indoors during instal-
lation, and keep both ends of the piping sealed
until just before brazing. (Leave elbow joints, etc.
in their packaging.)
The refrigerant oil applied to flare and flange
connections must be ester oil, ether oil or
alkylbezene oil in a small amount.
In case of using the existing pipes for R22, be careful with
the followings.
· 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.
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 compressor.
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.
Use the specified refrigerant only.
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the
unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the
spec labels provided with our products.
We will not be held responsible for mechanical failure,
system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
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.
3-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply circuits must be disconnected.
Preparation before the repair service.
• Prepare the proper tools.
• Prepare the proper protectors.
• Provide adequate ventilation.
• After stopping the operation of the air conditioner, turn off the power-supply breaker.
• Discharge the condenser before the work involving the electric parts.
Precautions during the repair service.
• Do not perform the work involving the electric parts with wet hands.
• Do not pour water into the electric parts.
• Do not touch the refrigerant.
• Do not touch the hot or cold areas in the refrigerating cycle.
• When the repair or the inspection of the circuit needs to be done without turning off the power,
exercise great caution not to touch the live parts.
OCH425D

4
Gravimeter
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
[4] Refrigerant leakage detection function
This air conditioner 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.
[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.)
No. Tool name Specifications
1Gauge manifold · Only for R410A
· Use the existing fitting specifications. (UNF1/2)
· Use high-tension side pressure of 5.3 MPa·G or over.
2Charge hose · Only for R410A
· Use pressure performance of 5.09 MPa·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 —
OCH425D

5
3-3. PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES
(1) Flowchart
Connecting a new air conditioner
Flaring work should be done so that flare meets the dimension for R410A.
Use flare nut provided with indoor and outdoor unit.
When using gas piping of :19.05mm for HRP100, 125.
Make sure that DIP SW8-1 on outdoor unit controller board is set to ON.
This is to keep the pressure on pipes within permissible range.
●Use different diameter joint or adjust the piping size by brazing.
When using pipes larger than specified size for HRP71.
Make sure that DIP SW8-1 on outdoor unit controller board is set to ON.

This 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.
When existing pipes are specified size.
The pipes can be reused referring to TECHNICAL DATA BOOK (OCS11).
●Use different diameter joint or adjust the piping size by brazing.
* When using existing pipes for HRP71, 100, 125HA(2).
Make sure that DIP SW8-2 on outdoor unit controller board is set to ON and perform
replacement operation.
+Chemical compounds containing chlorine left in existing pipes are collected by replace filter.
●The air conditioner automatically performs cooling operation through filter replacement for about 2 hours.
HRP·HA(2) HRP·HA2R1
Measure the existing pipe thickness and check for damage.
Check if existing air conditioner can operate.
Existing air conditioner can
operate.
Disconnect existing air con-
ditioner from piping.
Existing pipes can be reused.
In case the unit is HRP·HA2R1 In case the unit is HRP·HA(2)
Perform cooling operation
for about 30 minutes and
then do a pump down work.
Use a refrigerant recovery
equipment to recover the
refrigerant.
Existing air conditioner
cannot operate.
The existing pipe thickness meets speci-
fications and the pipes are not damaged.
The existing pipe thickness does not meet
specifications or the pipes are damaged.
Connect a new air conditioner. Connect a new air conditioner.
Perform replacement operation.
·When performing replacement operation, make sure that DIP SW8-2 on outdoor unit controller board is
set to ON.
+Chemical 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.
Existing pipes cannot be
reused. Use new pipes.
+In case existing pipes were used
for gas or oil heat pump system,
be sure to clean the pipes.
OCH425D