Mitsubishi Electric Mr.Slim PUZ-HA42NKA User manual

SERVICE MANUAL
CONTENTS
1. REFERENCE MANUAL ·································· 2
2. SAFETY PRECAUTION ·································· 2
3. FEATURES ······················································ 6
4. SPECIFICATIONS ··········································· 7
5. DATA································································ 8
6. OUTLINES AND DIMENSIONS ···················· 10
7. WIRING DIAGRAM·········································11
8. WIRING SPECIFICATIONS··························· 12
9.
REFRIGERANT SYSTEM DIAGRAM ·············· 16
10. TROUBLESHOOTING··································· 18
11. EASY MAINTENANCE FUNCTION··············· 71
12. FUNCTION SETTING ···································· 74
13.
MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ············ 82
14. DISASSEMBLY PROCEDURE······················ 92
No. OCH567
R410A
August 2014
Note:
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PUZ-HA42NKA
PARTS CATALOG (OCB567)
[Model Name] [Service Ref.]
PUZ-HA42NKA
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2
2SAFETY PRECAUTION
1REFERENCE MANUAL
Before obtaining access to terminal, all supply circuits must be disconnected.
Preparation before the repair service.
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Precautions during the repair service.
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2-1. ALWAYS OBSERVE FOR SAFETY
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INDOOR UNIT SERVICE MANUAL
OCH567

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Cautions for units utilizing refrigerant R410A
2-2. 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 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 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.
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.
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
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.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
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.
OCH567


Gravimeter
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
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[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
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OCH567

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2-3. CAUTIONS FOR REFRIGERANT PIPING WORK
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1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
1/32 [0.8]
1/32 [0.8]
1/32 [0.8]
5/128 [1.0]
—
1/32 [0.8]
1/32 [0.8]
1/32 [0.8]
5/128 [1.0]
5/128 [1.0]
Nominal
dimensions
(in)
Diagram below: Piping diameter and thickness
Outside
diameter (mm)
Thickness : in [mm]
R410A R22
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
1/32 [0.8]
1/32 [0.8]
1/32 [0.8]
5/128 [1.0]
—
1/32 [0.8]
1/32 [0.8]
1/32 [0.8]
5/128 [1.0]
5/128 [1.0]
Nominal
dimensions
(in)
Diagram below: Piping diameter and thickness
Outside
diameter (mm)
Thickness : in [mm]
R410A R22 1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
43/64 [17.0]
7/8 [22.0]
1-3/64 [26.0]
1-9/64 [29.0]
17.0
22.0
24.0
27.0
36.0
Nominal
dimensions (in)
Flare nut dimensions Outside
diameter(mm)
Dimension B
Unit: in [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
Recover refrigerant
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
Recover refrigerant
Check the degree of vacuum. (Vacuum
valve prevents back flow of oil and refri-
gerant to thermistor vacuum gauge)
Recover refrigerant
Tool exclusive for R410A
Tool exclusive for R410A
Tool for HFC refrigerant
Tool exclusive for R410A
Tool exclusive for R410A
Ester 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 can be used for other refrigerants
Tools can be used for other refrigerants
Tools can be used for other refrigerants
Tools can be used for other refrigerants
Tools can be used for other
refrigerants
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)
: 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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OCH567


3 FEATURES
HIGH HEATING CAPACITY
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HIGH SPEED HEATING START UP
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WIDE HEATING RANGE
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CHARGELESS SYSTEM
PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT.
Maximum 100 ft, 30 m
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PUZ-HA42NKA
Outdoor W.B. temp.
Heating capacity
-13°F
[-25°C] -4°F [-20°C] 5°F [-15°C] 14°F [-10°C] 23°F [-5°C] 32°F [0°C]
A42
HA36
50,000
(Btu/h)
40,000
28,800 BTU/h
48,000 BTU/h
0
Performance
about 60%UP
33,000 Btu/h
(Outlet air temp.
105°F [41°C])
About 5min.
Stable
About 50% CUT
Elapsed time (min.)
Heating capacity(peak)
About 10 min.
When stabled,
hot air of Û)>Û&@
PUZ-A type:
Outlet air temp. Û)>Û&@
+$
2XWOHWDLUWHPSÛ)>Û&@w1
50,000
(Btu/h)
40,000
5100
w1 Condition
Room temp. 70°F [21°C](D.B.) Outdoor temp. 35°F [1.7°C](D.B.) / 33°F [0.6°C] (W.B.) : Hi notch
It doesn’t become Û)>Û&@
when outside air temp.
is too low.
0
Expanded
Up to -13
°F
Outdoor wet-bulb temperature
A42 type
HA42 type
-13°F
10°F
-13°F
[-25°C] -4°F [-20°C] 5°F [-15°C] 14°F [-10°C] 23°F [-5°C] 32°F [0°C]
OCH567


4SPECIFICATIONS
Service Ref.
Power supply Phase Single
Cycle 60Hz
Voltage 208/230V
MCA A 37
MOCP A 44
Breaker size A 40
External finish Munsell 3Y 7.8/1.1
Heat exchanger Plate fin coil
Defrost method Reverse cycle
Crankcase heater kW -
Compressor Hermetic
Model
Motor output kW 2.5
R.L.A. 19
L.R.A. 28
Starter type Inverter
Fan Fan(drive) oNo. Propeller fan o2
Fan motor output kW 0.086 + 0.086
Fan motor F.L.A. 0.40 + 0.40
Airflow m
3
/min 94
CFM 3,320
Sound level Cooling dB 49
Heating dB 51
Protection devices HP switch
LP switch
Discharge thermo
Comp. surface thermo
Dimension W
mm 1050
D
mm 330+30
H
mm 1,338
W
in 41 - 6/16
D
in 13 + 1-3/16
H
in 52 - 11/16
Weight kg
lb
Refrigerant Charged kg 6.0
R410A
lb 13.4
Control Linear expansion valve
Oil Model Ether (FVC68D)
Charged L1.7
oz 57
Refrigerant Pipe size OD mm 9.52
piping Liquid in 3/8
Pipe size OD mm 15.88
Gas in 5/8
Connection method Indoor Flared
Connection method Outdoor Flared
Height difference mMaximum 30
IU - OU ft Maximum100
Piping length Maximum 75
Maximum 245
PUZ-HA42NKA
ANB42FJTMT
130
287
m
ft
OCH567


Piping Length (one way)
Charged
Factory
Service Ref. 100 ft 110 ft 120 ft 130 ft 140 ft 150 ft 160 ft 165 ft
30 m 33 m 37 m 40 m 43 m 46 m 49 m 50 m
PUZ-HA42NKA
212 oz 218 oz 224 oz 230 oz 236 oz 242 oz 248 oz 255 oz 212 oz
6.0 kg 6.2 kg 6.5 kg 6.7 kg 6.9 kg 7.1 kg 7.2 kg 7.4 kg
180 ft 200 ft 210 ft 230 ft 245 ft
55 m 61 m 64 m 70 m 75 m
260 oz 272 oz 278 oz 290 oz 298 oz
7.7 kg 7.9 kg 8.2 kg 8.4 kg
6.4 kg 6.0 kg
For pipes longer than 100 ft, additional charge is required.
Service Ref.
Compressor model
(')
Winding Registance
U-V
U-W
W-V
(at 68°F [20°C] )
PUZ-HA42NKA
ANB42FJTMT
0.188
0.188
0.188
5-1. REFILLING REFRIGERANT CHARGE (R410A: oz, kg)
5-2. COMPRESSOR TECHNICAL DATA
5DATA
5-3. NOISE CRITERION CURVES
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
PUZ-HA42NKA
COOLING
MODE
HEATING
49
SPL(dB)
51
LINE
5 ft
3.3 ft
MICROPHONE
UNIT
GROUND
OCH567


Representative matching PLA-A42BA4
Mode COOLING HEATING
Total Capacity BTU/h 42,000
4,340 48,000
4,660
Input W
Electrical circuit
Indoor unit model PLA-A42BA4
Phase Single
Cycle 60Hz
Voltage 230V
Current
Outdoor unit model PUZ-HA42NKA
Phase Single
Cycle 60Hz
Voltage 230V
Current
Refrigerant circuit
Discharge pressure
MPa
Suction pressure
MPa
Discharge temperature
Condensing temperature
Suction temperature
Ref. Pipe length
Discharge pressure
PSIG
Suction pressure
PSIG
Discharge temperature
Condensing temperature
Suction temperature
Ref. Pipe length
side
Indoor Intake air temperature DB
Intake air temperature WB
Discharge air temperature DB
side
Outdoor Intake air temperature DB
Intake air temperature WB
side
Indoor Intake air temperature DB
°F
Intake air temperature WB
°F
Discharge air temperature DB
°F
side
Outdoor Intake air temperature DB
°F
Intake air temperature WB
°F
SHF
BF
18.7 A
390
119
166
114
48
25
2.69
0.82
74.2
45.8
9.1
7.6
80
67
53
95
75
26.7
19.4
11.9
35.0
23.9
0.71
0.15
20.1 A
475
99
193
125
41
25
3.28
0.68
89.7
51.9
4.9
7.6
70
60
116
47
43
21.1
15.6
46.9
8.3
6.1
—
—
1.00 A 0.94 A
°F
°F
°F
°C
°C
°C
°C
°C
°C
°C
°C
m
ft
5-4. STANDARD OPERATION DATA
OCH567


6OUTLINES AND DIMENSIONS
Unit: mm<inch>
PUZ-HA42NKA
Conduit hole
(Ø24<15/16>Knock-Out)
Conduit hole
(Ø37<1-15/32>Knock-Out)
Rear trunking hole (Knock-Out)
Rear piping hole (Knock-Out)
75<2-15/16>
92<3-5/8>
73<2-7/8>
60<2-3/8>
5<3/16>
26<1-1/32>
27<1-1/16> 55<2-3/16>
55<2-3/16> 60<2-3/8>
Ø92
<3-5/8>
Rear Air Intake
Handle for moving Handle for
moving
Ground for the power supply
("GR"marking position)
Service panel
Handle for moving
2
1
Terminal connection
Left・・・Power supply wiring
Right・・Indoor/Outdoor wiring
( )
Handle for moving
※1 450<17-23/32>
1068 <42-1/20>
1050 <41-11/32>
26<1-1/32>
369 <14-17/32> 632 <24-7/8>
1338 <52-11/16>
362<14-1/4>
※1 442<17-2/5>
Conduit hole (Ø24<15/16>Knock-Out)
Front piping hole (Knock-Out)
Front trunking hole
(Knock-Out)
Conduit hole (Ø37<1-15/32>Knock-Out)
26<1-1/32>
92<3-5/8>
27<1-1/16> 55<2-3/16>
73<2-7/8>
75<2-15/16>
55<2-3/16>60<2-3/8>
Ø92
<3-5/8>
Right trunking hole (Knock-Out)
Conduit hole
(Ø37<1-15/32>Knock-Out)
Conduit hole
(Ø24<15/16>Knock-Out)
Right piping hole (Knock-Out)
73 <2-7/8> 61<2-3/8>
5<3/16>
29<1-5/32>
27<1-1/16>
26<1-1/32> 92
<3-5/8>
53<2-3/32> 60<2-3/8>
55<2-3/16> 92<3-5/8>
Ø92
<3-5/8>
Drain hole
（5-Ø33<1-5/16>)
Bottom piping hole
(Knock-Out)
136
<5-11/32>
154
<6-1/16>
160
<6-5/16>
160
<6-5/16>
160
<6-5/16>
110<14-11/32>
45<1-25/32>
81<3-3/16>
86<3-3/8>
Side Air Intake
Rear piping cover
Front piping cover
Air intake
Installation Feet
2-U Shaped notched holes
(Foundation Bolt M10<W3/8>)
2-12×36 Oval holes
(Foundation Bolt M10<W3/8>)
Side Air Intake
Rear Air Intake
Air Discharge
330<13>
70
<2-3/4>
417<16-13/32>
225
<8-27/32> 600<23-5/8> 225
<8-27/32>
370 <14-9/16>
42
<1-21/32>
61
<2-13/32>
25<31/32>
19<3/4>28<1-3/32>
53 <2-3/32> 0 40 <1-9/16> 56 <2-7/32>
1/2 Conduit
attachment
Ø
22.2<7/8>
Ø
27.8<1-3/32>
When installing the conduit.
Set the attachment to the
inner side of each panel.
3/4 Conduit attachment
Scale 1:5
60<2-3/8> 22.5<7/8>
5<3/16>
24.7<31/32>
100
<3-15/16>
Piping and wiring connections
can be made from 4 directions:
FRONT, Right, Rear and Below.
4 PIPING-WIRING DIRECTIONS
FREE
Min. 15mm
<3/5> Min. 15mm
<3/5>
Min. 1000mm
<39-3/8> Min. 150mm
<5-29/32>
1 FREE SPACE (Around the unit)
The diagram below shows a basic example.
Explantion of particular details are
given in the installation manuals etc.
3 FOUNDATION BOLTS
Please secure the unit firmly
with 4 foundation (M10<W3/8>)
bolts.(Bolts and washers must be purchased locally.)
Max.
<Foundation bolt height>
FOUNDATION
30<1-3/16>
Min.
2 SERVICE SPACE
Dimensions of space needed
for service access are
shown in the below diagram.
Service space
Min.Min.
Min.
Min. 15<3/5>
50
<2>
500
<19-11/16>
500
<19-11/16>
150
<5-29/32>
Piping Knock-Out Hole Details
Example of Notes
Ø
1
 ・・・
Refrigerant GAS pipe connection (FLARE)
15.88（5/8F）
※１
・・・Indication of STOP VALVE connection location.
2
 ・・・
Refrigerant LIQUID pipe connection (FLARE)
Ø9.52（3/8F）
OCH567