Mitsubishi Electric PUHZ-P200YHA User manual

SERVICE MANUAL
No.OCH424
REVISED EDITION-A
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
R410A
February 2009
Outdoor unit
[model names]
PUHZ-P200YHA
PUHZ-P250YHA
PUHZ-P200YHA3
PUHZ-P250YHA3
[Service Ref.]
PUHZ-P200YHA
PUHZ-P250YHA
PUHZ-P200YHA3
PUHZ-P250YHA3
PUHZ-P200YHA
PUHZ-P250YHA
PUHZ-P200YHA3
PUHZ-P250YHA3
Note:
•This manual describes only
service data of the outdoor
units.
•RoHS compliant products
have <G> mark on the
spec name plate.
CONTENTS
1. TECHNICAL CHANGES................................. 2
2. REFERENCE MANUAL.................................. 2
3. SAFETY PRECAUTION.................................. 3
4. FEATURES...................................................... 6
5. SPECIFICATIONS........................................... 7
6. DATA...............................................................8
7. OUTLINES AND DIMENSIONS.................... 10
8. WIRING DIAGRAM.......................................11
9. WIRING SPECIFICATIONS..........................12
10. REFRIGERANT SYSTEM DIAGRAM............... 17
11. TROUBLESHOOTING...................................19
12. FUNCTION SETTING.................................... 69
13. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER
.......... 76
14. EASY MAINTENANCE FUNCTION..............86
15. DISASSEMBLY PROCEDURE..................... 89
PARTS CATALOG (OCB424)
Revision:
•PUHZ-P200/250YHA3
are added in REVISED
EITION-A.
•Some descriptions have
been modified.
•Please void OCH424.

2
2REFERENCE MANUAL
Model name Service Ref.
Service
Manual No.
PLA-RP35/50/60/71/100/125/140BA
PLA-RP71/100/125/140BA2 PLA-RP35/50/60/71/100/125/140BA(#2).UK PLA-RP35/50/60/71BA1.UK
PLA-RP71/100/125BA2.UK
PLA-RP140BA2R1.UK
OCH412
OCB412
PCA-RP71/125HA OC329 PCA-RP71/125HA(#1)
PCA-RP50/60/71/100/125/140GA PCA-RP50/60/71/100/125/140GA(#1) OC328
PCA-RP50GA2 PCA-RP50GA2(#1)
PKA-RP35/50GAL PKA-RP35/50GAL(#1) OC330
PKA-RP60/71/100FAL PKA-RP60/71/100FAL(#1)
PKA-RP50FAL2 PKA-RP50FAL2(#1) OC331
PEAD-RP60/71/100GA PEAD-RP60/71/100GA(#1).UK HWE0506
PEA-RP200/250/400/500GA PEA-RP200/250/400/500GA.TH-AF
PEA-RP200/250GA.TH-AFMF HWE0708A
PEAD-RP50/60/71/125/140EA
PEAD-RP35/100EA2 PEAD-RP50/60/71/125/140EA(#1).UK PEAD-RP35/100EA2(#1).UK HWE0521
PKA-RP60/71/100KAL PKA-RP60/71/100KAL.TH OCH452
OCB452
PCA-RP50/60/71/100/125/140KA PCA-RP50/60/71/100/125/140KA OCH454
OCB454
PKA-RP35/50HAL PKA-RP35/50HAL OCH453
OCB453
INDOOR UNIT’S SERVICE MANUAL
1TECHNICAL CHANGES
PUHZ-P200YHA PUHZ-P200YHA3
PUHZ-P250YHA PUHZ-P200YHA3
• OUTDOOR CONTROLLER BOARD (C.B.) has been changed.
(S/W has been changed: Corresponding to the additional combination between PKA-RP•HAL/KAL, PCA-RP•KA and PEAD-RP•JA(L))

3
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.
· Be sure to clean the pipes and make sure that the insides
of the pipes are clean.
· 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.
3-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply
circuits must be disconnected.

4
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
[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.)

5
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.)
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 its working pressure is higher than that of other refriger-
ants. Therefore, to enhance airtightness and intensity, flare cutting dimension of copper pipe for R410A have been speci-
fied 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 inch, the dimension B changes.
Use torque wrench corresponding to each dimension.
3Tools for R410A (The following table shows whether conventional tools can be used or not.)
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
0.8
0.8
0.8
1.0
—
0.8
0.8
0.8
1.0
1.0
Nominal
dimensions(inch)
Diagram below: Piping diameter and thickness
Outside
diameter (mm)
Thickness (mm)
R410A R22
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
9.1
13.2
16.6
19.7
24.0
9.0
13.0
16.2
19.4
23.3
Nominal
dimensions(inch)
Flare cutting dimensions
Outside
diameter Dimension A ( )
+0
-0.4
(mm)
R410A R22 1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
17.0
22.0
26.0
29.0
36.0
17.0
22.0
24.0
27.0
36.0
Nominal
dimensions(inch)
Flare nut dimensions Outside
diameter Dimension B
(mm)
R410A R22
Gauge manifold
Charge hose
Gas leak detector
Refrigerant recovery equipment
Refrigerant cylinder
Applied oil
Safety charger
Charge valve
Vacuum pump
Flare tool
Bender
Pipe cutter
Welder and nitrogen gas cylinder
Refrigerant charging scale
Vacuum gauge or thermis-
tor vacuum gauge and
vacuum valve
Charging cylinder
Air purge, refrigerant charge and
Operation check
Gas leak check
Refrigerant recovery
Refrigerant charge
Apply to flared section
Prevent compressor malfunction
when charging refrigerant by
spraying liquid refrigerant
Prevent gas from blowing out
when detaching charge hose
Vacuum drying and air
purge
Flaring work of piping
Bend the pipes
Cut the pipes
Weld the pipes
Charge refrigerant
Check the degree of vacuum. (Vacuum
valve prevents back flow of oil and refri-
gerant to thermistor vacuum gauge)
Refrigerant charge
Tool exclusive for R410A
Tool exclusive for R410A
Tool for HFC refrigerant
Tool exclusive for R410A
Tool exclusive for R410A
Ester oil, ether oil and
alkylbenzene oil
(minimum amount)
Tool exclusive for R410A
Tool exclusive for R410A
Tools for other refrigerants can
be used if equipped with adop-
ter for reverse flow check
Tools for other refrigerants
can be used by adjusting
flaring dimension
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants
can be used
Tool exclusive for R410A
Tools and materials Use R410A tools Can R22 tools be used?
(Usable if equipped
with adopter for rever-
se flow)
(Usable by adjusting
flaring dimension)
Can R407C tools be used?
Ester oil, ether oil:
Alkylbenzene oil: minimum amount
(Usable if equipped
with adopter for rever-
se flow)
(Usable by adjusting
flaring dimension)
: 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.
Dimension A
Dimension B

6
4FEATURES
CHARGELESS SYSTEM
PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. (Max.30m)
The refrigerant circuit with LEV (Linear Expansion Valve) and Accumulator 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. It is completely eliminated by chargeless system. This unique system improves the quality and reliabil-
ity of the work done. It also helps to speed up the installation time.
PUHZ-P200YHA
PUHZ-P250YHA
PUHZ-P200YHA3
PUHZ-P250YHA3

7
5SPECIFICATIONS
A
A
kW
W
kW
*
/min(L/s )
dB
dB
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kg(lbs)
L
mm(in.)
mm(in.)
Power supply (phase, cycle, voltage)
Running current
Max. current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan Fan(drive) %No.
Fan motor output
Airflow
Defrost method
Noise level
Dimensions
Weight
Refrigerant
Charge
Oil (Model)
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
Mode
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref. PUHZ-P250YHA
PUHZ-P250YHA3
PUHZ-P200YHA
PUHZ-P200YHA3
Cooling
9.47
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
YHA: ANB52FFJMT or ANB52FFPMT
YHA3: ANB52FFPMT
Line start
—
Plate fin coil
Propeller fan %2
0.150 + 0.150
130(2170)
Reverse cycle
950(37-3/8)
330 + 30(13+1-3/16)
1,350(53-1/8)
R410A
2.30(FV50S)
Flared
Flared & Brazing
Max. 30m
Max. 70m
Heating
9.88
Cooling
11.0 21
5.5
Heating
12.0
HP switch
Discharge thermo
3 phase 50Hz, 400V
OUTDOOR UNIT
REFRIGERANT PIPING
4.7
19
59
59
126(278)
5.8(12.8)
9.52(3/8)
25.4(1)
59
59
YHA: 133(294)/ YHA3: 135(298)
7.1(15.7)
12.7(1/2)
25.4(1)

8
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUHZ-P200YHA
PUHZ-P250YHA
PUHZ-P200YHA3
PUHZ-P250YHA3
COOLING
MODE
HEATING
59
SPL(dB)
59
LINE
6DATA
6-1. REFILLING REFRIGERANT CHARGE (R410A : kg)
6-2. COMPRESSOR TECHNICAL DATA
Piping length (one way)
10m 20m 30m 40m 50m Factory
charged
4.8
5.9
5.3
6.5
5.8
7.1
6.7
8.3
7.6
9.5
60m
8.5
10.7
70m
9.4
11.9
5.8
7.1
Service Ref.
PUHZ-P200YHA
PUHZ-P200YHA3
PUHZ-P250YHA
PUHZ-P250YHA3
U-V
U-W
W-V
Unit
Compressor model
Winding
Resistance
()
(at 20°C)
ANB52FFJMT
ANB52FFPMT
0.30
0.30
0.30
PUHZ-P200, 250YHA PUHZ-P200, 250YHA3
ANB52FFPMT
0.30
0.30
0.30
For pipe longer than 30m, addi-
tional charge is required.
6-3. NOISE CRITERION CURVES
1.5m
1m
MICROPHONE
UNIT
GROUND

9
PEA-RP250GAPEA-RP200GA
PEA-RP250GA
PEA-RP200GA
3, 50
3, 50
400
400
1.18
1.00
2.302.00
PUHZ-P250YHA
PUHZ-P250YHA3
PUHZ-P200YHA
PUHZ-P200YHA3
3, 503, 50
400
400
HeatingCooling
HeatingCooling
12.011.0
9.889.47
19,000 22,400 22,000 27,000
7.21 7.36 8.44 8.47
74.074.873.775.6
45.149.643.249.7
-2.37.1
-0.88.0
7.57.5
7.57.5
2027
2027
1519
1519
39.115.4
35.717.1
735
735
624
624
0.86
0.81
0.150.18
—
—
—
—
2.67
(27.2)
2.94
(30.0)
2.96
(30.2) 2.59 (26.4) 0.62
(6.32)
0.86
(8.75)
0.87
(8.87) 0.64 (6.53)
Electrical circuitRefrigerant circuitIndoor side
Outdoor
side
Representative matching
SHF
BF
Mode
Capacty
Input
Total
(kgf/%)
(kgf/%)
Phase , Hz
Voltage
Input
Current
Outdoor unit
Phase , Hz
Voltage
Current
Discharge pressure
Suction pressure
Discharge temperature
Condensing temperature
Suction temperature
Ref. pipe length
Intake air temperature
Discharge air temperature
Intake air temperature
V
kW
A
V
A
MPa
MPa
°C
°C
°C
m
°C
°C
°C
°C
°C
Indoor unit
D.B.
W.B.
D.B.
D.B.
W.B.
W
kW
The unit of pressure has been changed to MPa based on international SI system.
The conversion factor is: 1(MPa)=10.2(kgf/cm²)
6-4. STANDARD OPERATION DATA

10
Rear piping cover
Front piping cover
Side Air Intake
Handle for moving
Piping Knockout Hole Details
637323 5527
92
65
4045
Power supply wiring hole (2-:27Knockout)
Rear trunking hole (Knockout)
Rear piping hole (Knockout)
:92
922723
6373
4075
92
5519
Power supply wiring hole (2-:27Knockout)
Right trunking hole (Knockout)
Right piping hole (Knockout)
:92
637323 5527
40 45
65
92
Power supply wiring hole (2-:27Knockout)
Front trunking hole (Knockout)
Front piping hole (Knockout)
:92
Over
Over
Over
Over
Less than
Piping and wiring connections can be made from 4 directions: front, right, rear and below.
4 PIPING-WIRING DIRECTIONS
3 FOUNDATION BOLTS2 SERVICE SPACE
1 FREE SPACE (Around the unit)
Please secure the unit firmly with 4 foundation (M10) bolts. (Bolts and washers must be purchased locally.)
<Foundation bolt height>
Dimensions of space needed for service access are shown in the below diagram.
The diagram below shows a basic example. Explantion of particular details are given in the installation manuals etc.
30
FOUNDATION
10
500
500 150
Service space
FREE
Over 10mm
Over 10mm
Over 150mm
Over 1000mm
53 40
56
0
70
175600175
33030
37028 19
417
60 37
2-12%36 oval holes (Foundation Bolt M10)
2-U Shaped notched holes (foundation Bolt M10)
Side Air Intake
Rear Air Intake
Air Discharge
Installation Feet
999
995
*1 A
*2 339
950
322
23 371 635
1350
*1 439
Handle for moving
Handle for moving
Terminal Connections Left···Power supply wiring Right···Indoor/Outdoor wiring
Service Panel
(
Earth terminal
Brazing


)
PUHZ-P250YHA PUHZ-P250YHA3 PUHZ-P200YHA PUHZ-P200YHA3 :9.52
(3/8 inch)
:12.7
(1/2 inch) 421
A
447

· · · ·Refrigerant GAS pipe connction (FLARE):19.05(3/4 inch)
· · · ·Refrigerant LIQUID pipe connection (FLARE)
*1· · · ·Indication of STOP VALVE connection location *2· · · ·Refrigerant GAS PIPE connention(BRAZING) O.D:25.4
Example of Notes
14514514522030
81 219
71
71
Drain hole (5-:33)
Bottom piping hole (Knockout)
Side Air Intake
Air Intake
Rear Air Intake
Handle for moving
Handle for moving
PUHZ-P200YHA
PUHZ-P250YHA
PUHZ-P200YHA3
PUHZ-P250YHA3
Unit : mm
7 OUTLINES AND DIMENSIONS