Mitsubishi Electric Mr.Slim PUZ-A18NHA6 User manual

SERVICE MANUAL
CONTENTS
1. REFERENCE MANUAL ································· 2
2. SAFETY PRECAUTION ································· 2
3. FEATURES····················································· 6
4. SPECIFICATIONS ·········································· 7
5. DATA······························································· 9
6. OUTLINES AND DIMENSIONS ··················· 13
7. WIRING DIAGRAM ······································ 16
8. WIRING SPECIFICATIONS·························· 20
9.
REFRIGERANT SYSTEM DIAGRAM ············· 23
10. TROUBLESHOOTING·································· 26
11. EASY MAINTENANCE FUNCTION·············· 91
12. FUNCTION SETTING ··································· 95
13.
MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ···105
14. DISASSEMBLY PROCEDURE··················· 114
R410A
Outdoor unit
[Model Name]
PUZ-A18NHA6
PUZ-A24NHA6
PUZ-A30NHA6
PUZ-A36NHA6
PUZ-A42NHA6
PUZ-A18NHA6-BS
PUZ-A24NHA6-BS
PUZ-A30NHA6-BS
PUZ-A36NHA6-BS
PUZ-A42NHA6-BS
PUY-A12NHA6
PUY-A18NHA6
PUY-A24NHA6
PUY-A30NHA6
PUY-A36NHA6
PUY-A42NHA6
PUY-A12NHA6-BS
PUY-A18NHA6-BS
PUY-A24NHA6-BS
PUY-A30NHA6-BS
PUY-A36NHA6-BS
PUY-A42NHA6-BS
[Service Ref.]
PUZ-A18NHA6
PUZ-A24NHA6
PUZ-A30NHA6
PUZ-A36NHA6
PUZ-A42NHA6
PUZ-A18NHA6-BS
PUZ-A24NHA6-BS
PUZ-A30NHA6-BS
PUZ-A36NHA6-BS
PUZ-A42NHA6-BS
PUY-A12NHA6
PUY-A18NHA6
PUY-A24NHA6
PUY-A30NHA6
PUY-A36NHA6
PUY-A42NHA6
PUY-A12NHA6-BS
PUY-A18NHA6-BS
PUY-A24NHA6-BS
PUY-A30NHA6-BS
PUY-A36NHA6-BS
PUY-A42NHA6-BS
PUZ-A24/30/36NHA6
PUY-A24/30/36NHA6
PARTS CATALOG (OCB577)
Notes:
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63/,77<3($,5&21',7,21(56 August 2015
No. OCH577
REVISED EDITION-A
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2SAFETY PRECAUTION
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
1REFERENCE MANUAL
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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.
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.)
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 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.
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.
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Gravimeter
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
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] 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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1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
11/32-23/64 [ 9.1]
1/2-33/64 [13.2]
41/64-21/32 [16.6]
49/64-25/32 [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
(in [mm])
R410A R22(mm) 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
(in [mm])
R410A 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
Collection of 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
Refrigerant charge
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 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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2-4. LOW AMBIENT COOLING
Precautions for low ambient cooling
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3 FEATURES
CHARGELESS SYSTEM
PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT.
(Maximum 100 ft [30 m] (A42)/ Maximum 70 ft [21 m] (A12–36))
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PUZ-A24/30/36NHA6
PUZ-A24/30/36NHA6-BS
PUY-A24/30/36NHA6
PUY-A24/30/36NHA6-BS
PUZ-A42NHA6
PUZ-A42NHA6-BS
PUY-A42NHA6
PUY-A42NHA6-BS
PUZ-A18NHA6
PUZ-A18NHA6-BS
PUY-A12/18NHA6
PUY-A12/18NHA6-BS
2&+
$

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4SPECIFICATIONS
Service Ref. PUZ-A18NHA6 PUZ-A24NHA6 PUZ-A30NHA6 PUZ-A36NHA6 PUZ-A42NHA6
PUZ-A18NHA6-BS PUZ-A24NHA6-BS PUZ-A30NHA6-BS PUZ-A36NHA6-BS PUZ-A42NHA6-BS
Power supply Phase Single
Cycle 60 Hz
Voltage 208/230 V
MCA A 13 18 25 25 26
MOCP A2030404040
Breaker size A 15 25 30 30 30
External finish Munsell 3Y 7.8/1.1
Heat exchanger Plate fin coil
Defrost method Reverse cycle
Crankcase heater kW -
Compressor Hermetic
Model SNB130FQCM1 TNB220FLHM TNB220FLHM TNB220FLHM ANB33FCTMT
Motor output kW 0.9 1.3 1.3 1.3 2.5
R.L.A. 12 12 12 12 20
L.R.A. 14 14 17.5 17.5 27.5
Starter type Inverter
Fan Fan(drive) oNo. Propeller fan o1 Propeller fan o1 Propeller fan o1 Propeller fan o1 Propeller fan o2
Fan motor output kW 0.040 0.075 0.075 0.075 0.086 + 0.086
Fan motor F.L.A. 0.35 0.75 0.75 0.75 0.40 + 0.40
Airflow m3/min 34 55 55 55 100
CFM 1200 1940 1940 1940 3530
Sound level Cooling dB 48 48 48 48 51
Heating dB 47 50 50 50 55
Protection devices HP switch HP switch HP switch HP switch HP switch
Comp.shell thermo Comp.shell thermo Comp.shell thermo Comp.shell thermo
Dimension W mm 800 950 950 950 950
D mm 300+23 330+30 330+30 330+30 330+30
H mm 600 943 943 943 1350
W in 31-1/2 37-12/32 37-12/32 37-12/32 37-12/32
D in 11-13/16 + 7/8 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16
H in 23-5/8 37-1/8 37-1/8 37-1/8 53-5/32
Weight kg 41 75 75 75 114
lb 91 165 165 165 251
Refrigerant R410A
Charged kg 1.7 3.0 3.0 3.0 4.5
lb 3 + 12/16 6 + 10/16 6 + 10/16 6 + 10/16 10
Ether (FV50S)
Control Linear expansion valve
Oil Model
Charged L 0.65 0.87 0.87 0.87 1.4
oz 20 28 28 28 45
Refrigerant Pipe size OD mm 6.35 9.52 9.52 9.52 9.52
piping Liquid in 1/4 3/8 3/8 3/8 3/8
Pipe size OD mm 12.7 15.88 15.88 15.88 15.88
Gas in 1/2 5/8 5/8 5/8 5/8
Connection method Indoor Flared
Connection method Outdoor Flared
Height difference m Maximum 30
IU - OU ft Maximum 100
Piping length m Maximum 30 Maximum 50 Maximum 50 Maximum 50 Maximum 50
ft Maximum 100 Maximum 165 Maximum 165 Maximum 165 Maximum 165
Comp.shell thermo
2&+
$

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Service Ref.
PUY-A12NHA6 PUY-A18NHA6 PUY-A24NHA6 PUY-A30NHA6 PUY-A36NHA6 PUY-A42NHA6
PUY-A12NHA6-BS PUY-A18NHA6-BS PUY-A24NHA6-BS PUY-A30NHA6-BS PUY-A36NHA6-BS PUY-A42NHA6-BS
Power supply Phase Single
Cycle 60 Hz
Voltage 208/230 V
MCA A 13 13 18 25 25 26
MOCP A152030404040
Breaker size A 15 15 25 30 30 30
External finish Munsell 3Y 7.8/1.1
Heat exchanger Plate fin coil
Defrost method -
Crankcase heater kW -
Compressor Hermetic
Model SNB130FQCM1 SNB130FQCM1 TNB220FLHM TNB220FLHM TNB220FLHM ANB33FCTMT
Motor output kW 0.9 0.9 1.3 1.3 1.3 2.5
R.L.A. 12 12 12 12 12 20
L.R.A. 14 14 14 17.5 17.5 27.5
Starter type Inverter
Fan Fan (drive) oNo. Propeller fan o1 Propeller fan o1 Propeller fan o1 Propeller fan o1 Propeller fan o1 Propeller fan o2
Fan motor output kW 0.040 0.040 0.075 0.075 0.075 0.086 + 0.086
Fan motor F.L.A. 0.35 0.35 0.75 0.75 0.75 0.40 + 0.40
Airflow m3/min 34 34 55 55 55 100
CFM 1200 1200 1940 1940 1940 3530
Sound level Cooling dB 46 48 48 48 48 51
Heating dB ––––––
Protection devices HP switch HP switch HP switch HP switch HP switch HP switch
Comp.shell thermo Comp.shell thermo Comp.shell thermo Comp.shell thermo Comp.shell thermo
Dimension W mm 800 800 950 950 950 950
D mm 300+23 300+23 330+30 330+30 330+30 330+30
H mm 600 600 943 943 943 1350
W in 31-1/2 31-1/2 37-12/32 37-12/32 37-12/32 37-12/32
D in 11-13/16 + 7/8 11-13/16 + 7/8 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16
H in 23-5/8 23-5/8 37-1/8 37-1/8 37-1/8 53-5/32
Weight kg 37 40 74 74 74 112
lb 82 89 163 163 163 247
Refrigerant R410A
Charged kg 1.3 1.7 3.0 3.0 3.0 4.5
lb 2 +14/16 3 + 12/16 6 + 10/16 6 + 10/16 6 + 10/16 10
Control Linear expansion valve
Oil Model
Charged L 0.65 0.65 0.87 0.87 0.87 1.4
Ether (FV50S)
oz 20 20 28 28 28 45
Refrigerant Pipe size OD mm 6.35 6.35 9.52 9.52 9.52 9.52
piping Liquid in 1/4 1/4 3/8 3/8 3/8 3/8
Pipe size OD mm 12.7 12.7 15.88 15.88 15.88 15.88
Gas in 1/2 1/2 5/8 5/8 5/8 5/8
Connection method Indoor Flared
Connection method Outdoor Flared
Height difference m Maximum 30 Maximum 30 Maximum 30 Maximum 30 Maximum 30 Maximum 30
IU - OU ft Maximum 100 Maximum 100 Maximum 100 Maximum 100 Maximum 100 Maximum 100
Piping length m Maximum 50 Maximum 50 Maximum 69 Maximum 69 Maximum 69 Maximum 69
ft Maximum 165 Maximum 165 Maximum 225 Maximum 225 Maximum 225 Maximum 225
Comp.shell thermo
2&+
$


PUZ-A42NHA6
Service Ref. PUZ-A42NHA6-BS
PUY-A42NHA6
PUY-A42NHA6-BS
Compressor model SNB130FQCM1 TNB220FLHM ANB33FCTMT
(")
Winding Resistance
U-V 0.640 0.880 0.302
U-W 0.640 0.880 0.302
W-V 0.640 0.880 0.302
(at 68°F [20°C] )
PUY-A12/18NHA6-BS
PUY-A12/18NHA6
PUZ-A18NHA6-BS
PUZ-A18NHA6
PUY-A24/30/36NHA6-BS
PUY-A24/30/36NHA6
PUZ-A24/30/36NHA6-BS
PUZ-A24/30/36NHA6
5-1. REFILLING REFRIGERANT CHARGE (R410A: oz, kg)
5-2. COMPRESSOR TECHNICAL DATA
5DATA
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38=$1+$
38=$1+$%6
R] R] R] R] R] R] R] R] R] R] R] R] R] ––––––– R]
NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ –––––––NJ
38=$1+$
38=$1+$%6
R] R] R] R] R] R] R] R] R] R] R] R] R] ––––––– R]
NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ –––––––NJ
38=$1+$
38=$1+$%6
R] R] R] R] R] R] R] R] R] R] R] R] R] ––––––– R]
NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ –––––––NJ
38=$1+$
38=$1+$%6
R] R] R] R] R] R] R] R] R] R] R] R] R] ––––––– R]
NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ –––––––NJ
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2&+
$


5-3. NOISE CRITERION CURVES
5ft
3.3ft
MICROPHONE
UNIT
GROUND
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
PUY-A18NHA6
PUY-A18NHA6-BS
PUZ-A18NHA6
PUZ-A18NHA6-BS
COOLING
MODE
HEATING
48
SPL(dB)
47
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
PUY-A24/30/36NHA6
PUY-A24/30/36NHA6-BS
PUZ-A24/30/36NHA6
PUZ-A24/30/36NHA6-BS
COOLING
MODE
HEATING
48
SPL(dB)
50
LINE
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
PUY-A42NHA6
PUY-A42NHA6-BS
PUZ-A42NHA6
PUZ-A42NHA6-BS
COOLING
MODE
HEATING
51
SPL(dB)
55
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
PUY-A12NHA6
PUY-A12NHA6-BS
COOLING
MODE 46
SPL(dB) LINE
2&+
$