Mitsubishi Electric PUHZ-SHW80YAA User manual

SERVICE MANUAL
No. OCH651
R410A
May 2017
PARTS CATALOG (OCB651)
[Model Name]
PUHZ-SHW80VAA
PUHZ-SHW112VAA
PUHZ-SHW80YAA
PUHZ-SHW112YAA
PUHZ-SW75VAA
PUHZ-SW100VAA
PUHZ-SW75YAA
PUHZ-SW100YAA
Salt proof model
PUHZ-SHW80VAA-BS
PUHZ-SHW112VAA-BS
PUHZ-SHW80YAA-BS
PUHZ-SHW112YAA-BS
PUHZ-SW75VAA-BS
PUHZ-SW100VAA-BS
PUHZ-SW75YAA-BS
PUHZ-SW100YAA-BS
CONTENTS
1. REFERENCE MANUAL································ 2
2. SAFETY PRECAUTION ······························· 3
3. SPECIFICATIONS ········································ 7
4. DATA····························································· 9
5. OUTLINES AND DIMENSIONS·················· 11
6. WIRING DIAGRAM····································· 12
7. WIRING SPECIFICATIONS ························ 16
8. REFRIGERANT SYSTEM DIAGRAM ········ 17
9. TROUBLESHOOTING································ 20
10.
MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ···· 59
11. DISASSEMBLY PROCEDURE··················· 65
Note:
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PUHZ-SHW80VAA.UK
PUHZ-SHW112VAA.UK
PUHZ-SHW80YAA.UK
PUHZ-SHW112YAA.UK
PUHZ-SW75VAA.UK
PUHZ-SW100VAA.UK
PUHZ-SW75YAA.UK
PUHZ-SW100YAA.UK
PUHZ-SHW80VAA-BS.UK
PUHZ-SHW112VAA-BS.UK
PUHZ-SHW80YAA-BS.UK
PUHZ-SHW112YAA-BS.UK
PUHZ-SW75VAA-BS.UK
PUHZ-SW100VAA-BS.UK
PUHZ-SW75YAA-BS.UK
PUHZ-SW100YAA-BS.UK
PUHZ-SHW80Y
AA.UK
PUHZ-SHW80Y
PUHZ-SHW80Y
PUHZ-SHW1
12YAA.UK
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2
INDOOR UNIT SERVICE MANUAL
1-1. FOR AIR TO WATER SYSTEM
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OCH651
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2SAFETY PRECAUTION
2-2. 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.
The refrigerant oil applied to flare and flange
connections must be ester oil, ether oil or
alkylbenzene oil in a small amount.
In case of using the existing pipes for R22, be careful with
the following:
· 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 large amount of mineral oil enters, that can cause deterio-
ration of refrigerant oil, etc.
Store the piping indoors, and both ends of the
piping sealed until just before brazing.
(Leave elbow joints, etc. in their packaging.)
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of compressor.
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.
2-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply circuits must be disconnected.
Preparation before the repair service.
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OCH651
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
Electronic weighing scale
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
[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) If moisture or foreign matter might have entered the refrigerant piping during service, ensure to remove them.
[2] Additional refrigerant charge
When charging directly from cylinder
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OCH651
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2-3. PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES
Flowchart
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tions and the pipes are not damaged.
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Cautions for refrigerant piping work
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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
—
9.0
13.0
16.2
19.4
23.3
Nominal
dimensions(in)
Flare cutting dimensions
Outside
diameter (mm)
Dimension A ( )
+0
-0.4
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
-
17.0
22.0
24.0
27.0
36.0
Nominal
dimensions(in)
Flare nut dimensions
Outside
diameter (mm)
Dimension B (mm)
R410A
*
* 36.0mm for
indoor unit
of RP100,
125 and 140
R22
(mm)
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 alky-
lbenzene oil (minimum amount)
Tool exclusive for R410A
Tool exclusive for R410A
Tools for other refrigerants can
be used if equipped with adap-
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 adapter 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 adapter 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.
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OCH651
All manuals and user guides at all-guides.com
all-guides.com

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287'22581,7
3RZHUVRXUFH3KDVHF\FOHYROWDJH6LQJOH+]93KDVH+]90D[FXUUHQWA([WHUQDO¿QLVK0XQVHOO10XQVHOO1)52173$1(/5HIULJHUDQWFRQWURO/LQHDU([SDQVLRQ9DOYH&RPSUHVVRU+HUPHWLF0RGHO'1%)%$07'1%)%%070RWRURXWSXWN:6WDUWHUW\SH,QYHUWHU3URWHFWLRQGHYLFHV+3VZLWFK/3VZLWFK&RPSVXUIDFHWKHUPR'LVFKDUJHWKHUPR2YHUFXUUHQWGHWHFWLRQ&UDQNFDVHKHDWHU:—
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All manuals and user guides at all-guides.com

4DATA
4-1. REFILLING REFRIGERANT CHARGE (R410A: kg)
4-2. COMPRESSOR TECHNICAL DATA
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6HUYLFH5HI3LSLQJOHQJWKRQHZD\,QLWLDOFKDUJHGPPPPPPP38+=6+:9$$%68.38+=6+:9$$%68.38+=6+:<$$%68.38+=6+:<$$%68.38+=6:9$$%68.38+=6:<$$%68.———38+=6:9$$%68.38+=6:<$$%68.6HUYLFH5HI
38+=6+:9$$%68.38+=6+:9$$%68.38+=6+:<$$%68.38+=6+:<$$%68.
38+=6:9$$%68.38+=6:<$$%68.&RPSUHVVRUPRGHO'1.)%$07'1.)%%0761%)(*0&/61%)($0&/:LQGLQJ5HVLVWDQFHȍ898::9DW:6HUYLFH5HI
38+=6:9$$%68.38+=6:<$$%68.
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OCH651
38+=6+:9$$%68.
38+=6+:<$$%68.
38+=6+:<$$%68.
38+=6+:<$$%68.
All manuals and user guides at all-guides.com

4-3. NOISE CRITERION CURVES
PUHZ-SHW80VAA.UK
PUHZ-SHW80YAA.UK
PUHZ-SHW80VAA-BS.UK
PUHZ-SHW80YAA-BS.UK
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
90
80
70
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
COOLING
MODE
HEATING
48
SPL(dB)
45
LINE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
90
80
70
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
COOLING
MODE
HEATING
49
SPL(dB)
47
LINE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
90
80
70
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
COOLING
MODE
HEATING
45
SPL(dB)
43
LINE
1.5 m
1 m
MICROPHONE
UNIT
GROUND
PUHZ-SHW112VAA.UK PUHZ-SHW112YAA.UK
PUHZ-SHW112VAA-BS.UK PUHZ-SHW112YAA-BS.UK
PUHZ-SW100VAA.UK PUHZ-SW100YAA.UK
PUHZ-SW100VAA-BS.UK PUHZ-SW100YAA-BS.UK
PUHZ-SW75VAA.UK
PUHZ-SW75YAA.UK
PUHZ-SW75VAA-BS.UK
PUHZ-SW75YAA-BS.UK
OCH651
PUHZ-SHW80YAA.UK
PUHZ-SHW112YAA.UK
All manuals and user guides at all-guides.com