Mitsubishi Electric MSZ-GF60VE-E1 air conditioner

SPLIT-TYPE AIR CONDITIONERS
OUTDOOR UNIT
SERVICE MANUAL
HFC
No. OBH635
utilized
R410A
Models
MUZ-GF60VE
MUZ-GF71VE
-
E1
-
E1
Indoor unit service manual
MSZ-GF•VE Series (OBH634)
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 4
3. SPECIFICATION ················································ 5
4. NOISE CRITERIA CURVES ······························ 7
5. OUTLINES AND DIMENSIONS ························ 8
6. WIRING DIAGRAM············································ 9
7. REFRIGERANT SYSTEM DIAGRAM ············· 10
8. PERFORMANCE CURVES ····························· 12
9. ACTUATOR CONTROL ··································· 21
10. SERVICE FUNCTIONS···································· 22
11. TROUBLESHOOTING ····································· 22
12. DISASSEMBLY INSTRUCTIONS ···················· 39
PARTS CATALOG (OBB635)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
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.
<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 and remove the power plug.
Discharge the capacitor 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 refrigeration 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.
OBH635
2
1
TECHNICAL CHANGES
MUZ-GF60VE - E1
MUZ-GF71VE - E1
1. New model
OBH635
3
2
PART NAMES AND FUNCTIONS
MUZ-GF60VE MUZ-GF71VE
Air inlet
(back and side)
Piping
Drain hose
Air outlet
Drain outlet
ACCESSORIES
Model
Drain socket
OBH635
MUZ-GF60/71VE
1
4
3
SPECIFICATION
Outdoor model
Special remarks
Electrical data
Power supply
Cooling
Capacity
kW
Rated frequency (Min. - Max.) Heating
Breaker Capacity
A
Cooling
Power input 1 (Total)
W
Heating
Cooling
Running current 1
A
(Total)
Heating
Cooling
Power factor 1 (Total)
%
Heating
Starting current 1 (Total)
A
Cooling
Coefficient of performance
(COP) 1 (Total)
Heating
Model
Output
W
Cooling
Compressor
A
Current 1
Heating
Refrigeration oil (Model)
L
Model
Fan motor
Cooling
Current 1
A
Heating
Dimensions W × H × D
mm
Weight
kg
Dehumidification
Cooling
L/h
High
Cooling
Med.
Low
m3/h
Air flow 1
High
Heating
Med.
Low
Cooling
Sound level 1
dB(A)
Heating
High
Cooling
Med.
Low
Fan speed
rpm
High
Heating
Med.
Low
Fan speed regulator
Refrigerant filling capacity (R410A)
kg
NOTE: Test conditions are based on ISO 5151.
Cooling: Indoor
Dry-bulb temperature 27°C
Outdoor Dry-bulb temperature 35°C
Heating: Indoor
Dry-bulb temperature 20°C
Outdoor Dry-bulb temperature 7°C
Refrigerant piping length (one way): 5 m
1 Measured under rated operating frequency.
OBH635
MUZ-GF60VE
MUZ-GF71VE
Single phase, 230 V, 50 Hz
6.1 (1.4 - 7.5)
7.1 (2.0 - 8.7)
6.8 (2.0 - 9.3)
8.1 (2.2 - 9.9)
20
1,790
2,130
1,810
2,230
7.9
9.3
8.0
9.8
98
99
98
99
8.0
9.8
3.41
3.33
3.76
3.63
SNB130FGBMT
SNB172FEKMT
900
1,200
6.58
8.00
6.54
8.47
0.35(FV50S)
0.40(FV50S)
RC0J60-BC
0.93
0.83
0.93
0.82
840 × 880 × 330
50
53
1.9
2.3
3,492
3,426
3,066
3,006
1,692
1,512
2,952
2,892
2,952
2,892
2,226
2,280
55
55
950
840
480
450
810
810
620
650
3
1.55
1.90
Wet-bulb temperature
19°C
Wet-bulb temperature
6°C
5
Specifications and rated conditions of main electric parts
Model
Item
Smoothing
capacitor
Fuse
MUZ-GF60VE
MUZ-GF71VE
(CB1, CB2, CB3)
560 μF 450 V
(F601, F880, F901)
(IC932)
IGBT module
(IC700)
Expansion valve coil
(LEV)
Reactor
(L)
Diode module
(IC820)
Circuit protection
(PTC64, PTC65)
Terminal block
(TB1, TB2)
(X64)
(X65)
(X69)
Relay
(X601)
(X602)
R.V. coil
(21S4)
T3.15AL250 V
5 A 600 V
20 A 600 V
12 V DC
340 μH
20 A 600 V
33 Ω
3P
20 A 250 V
20 A 250 V
10 A 250 V
3 A 250 V
3 A 250 V
220 - 240 V AC
OBH635
6
4
NOISE CRITERIA CURVES
MUZ-GF71VE
FUNCTION
SPL(dB(A))
FUNCTION
SPL(dB(A))
COOLING
55
COOLING
55
HEATING
55
HEATING
55
LINE
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
NC-20
NC-10
10
63
125
250
500
1000
2000
4000
8000
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB re 0.0002 MICRO BAR
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB re 0.0002 MICRO BAR
MUZ-GF60VE
LINE
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
NC-20
NC-10
10
63
125
250
500
1000
2000
4000
8000
BAND CENTER FREQUENCIES, Hz
BAND CENTER FREQUENCIES, Hz
Test conditions
Cooling: Dry-bulb temperature 35°C
Heating: Dry-bulb temperature 7°C Wet-bulb temperature 6°C
OUTDOOR UNIT
1m
MICROPHONE
OBH635
7
5
OUTLINES AND DIMENSIONS
MUZ-GF60VE MUZ-GF71VE
Unit: mm
REQUIRED SPACE
500 mm or more
417.5
Drain hole
40
42
360
50
330
Air in
100 mm or more
100
mm
or m
ore
Air out
2-holes 10 21
350
500
175
500 mm or more
840
mm
or m
ore
81
109
Service panel
880
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) Ø 6.35 (MUZ-GF60VE)
Ø 9.52 (MUZ-GF71VE)
164.5
99.5
44
452
35
195
OBH635
8
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) Ø 15.88
6
WIRING DIAGRAM
MUZ-GF60VE MUZ-GF71VE
OBH635
9
7
REFRIGERANT SYSTEM DIAGRAM
MUZ-GF60VE
Unit: mm
Muffler
4-way valve #100
Refrigerant pipe ø15.88
(with heat insulator)
Stop valve
(with service port)
Flared connection
Outdoor
heat
exchanger
Discharge
temperature
thermistor
RT62
Defrost
thermistor
RT61
Ambient
temperature
thermistor
RT65
Compressor
Outdoor heat
exchanger
temperature
thermistor
RT68
Flared connection
LEV
Strainer
#100
Stop valve
Strainer
#100
Capillary tube
ø4.0×ø2.4×100
R.V. coil
heating ON
cooling OFF
Refrigerant flow in cooling
Refrigerant flow in heating
Refrigerant pipe ø6.35
(with heat insulator)
MUZ-GF71VE
Refrigerant pipe ø15.88
(with heat insulator)
Muffler
4-way valve #100
Stop valve
(with service port)
Flared connection
Outdoor
heat
exchanger
Discharge
temperature
thermistor
RT62
Defrost
thermistor
RT61
Ambient
temperature
thermistor
RT65
Compressor
Outdoor heat
exchanger
temperature
thermistor
RT68
Flared connection
Strainer
#100
Stop valve
LEV
Capillary tube
ø4.0×ø2.4×100
R.V. coil
heating ON
cooling OFF
Refrigerant flow in cooling
Refrigerant flow in heating
Refrigerant pipe ø9.52
(with heat insulator)
OBH635
Strainer
#100
10
Unit: mm
MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE
Refrigerant piping: m
Piping size O.D: mm
Max. Length A
Max. Height difference B
Gas
30
15
15.88
MUZ-GF60
MUZ-GF71
Liquid
6.35
9.52
Indoor
unit
Max. Height
difference
B
Max. Length
A
Outdoor unit
ADDITIONAL REFRIGERANT CHARGE (R410A: g)
Model
MUZ-GF60
Outdoor unit
precharged
1,550
7m
0
10 m
0
Refrigerant piping length (one way)
15 m
20 m
100
200
25 m
300
30 m
400
Refrigerant piping length (one way)
15 m
20 m
275
550
25 m
825
30 m
1,100
Calculation: X g = 20 g/m × (Refrigerant piping length (m) – 10)
Model
MUZ-GF71
Outdoor unit
precharged
1,900
7m
0
10 m
0
Calculation: X g = 55 g/m × (Refrigerant piping length (m) – 10)
NOTE: Refrigerant piping exceeding 7 m requires additional refrigerant charge according to the calculation.
OBH635
11
8
PERFORMANCE CURVES
MUZ-GF60VE MUZ-GF71VE
The standard specifications apply only to the operation of the air conditioner under normal conditions. Since operating conditions vary according to the areas where these units are installed, the following information has been provided to clarify the
operating characteristics of the air conditioner under the conditions indicated by the performance curve.
(1) GUARANTEED VOLTAGE
198 ~ 264 V, 50 Hz
(2) AIR FLOW
Air flow should be set at MAX.
(3) MAIN READINGS
(1) Indoor intake air wet-bulb temperature:
°C [WB]
(2) Indoor outlet air wet-bulb temperature:
°C [WB]
Cooling
(3) Outdoor intake air dry-bulb temperature:
°C [DB]
(4) Total input:
W
(5) Indoor intake air dry-bulb temperature:
°C [DB]
(6) Outdoor intake air wet-bulb temperature:
°C [WB]
Heating
(7) Total input:
W
Indoor air wet and dry bulb temperature difference on the left side of the following chart shows the difference between the
indoor intake air wet and dry bulb temperature and the indoor outlet air wet and dry bulb temperature for your reference
at service.
}
}
How to measure the indoor air wet and dry bulb temperature difference
1. Attach at least 2 sets of wet and dry bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets
of wet and dry bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air
speed is high.
2. Attach at least 2 sets of wet and dry bulb thermometers to the outdoor air intake.
Cover the thermometers to prevent direct rays of the sun.
3. Check that the air filter is cleaned.
4. Open windows and doors of room.
5. Press the EMERGENCY OPERATION switch once (twice) to start the EMERGENCY COOL (HEAT) MODE.
6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.
7. 10 minutes later, measure temperature again and check that the temperature does not change.
OUTDOOR UNIT
INDOOR UNIT
Wet and dry bulb
thermometers
FRONT VIEW
Wet and dry bulb
thermometers
BACK VIEW
8-1. CAPACITY AND INPUT CURVES
8.9
7.9
8.2
7.2
7.5
6.5
6.8
5.8
6.1
5.2
5.4
Capacity correction factors
8.6
1.5
MUZ-GF71VE
9.7
MUZ-GF60VE
Indoor air Wet-bulb temperature
difference (°C)
Cooling capacity (at Rated frequency)
9.3
Indoor intake air Wet-bulb
temperature( )
1.4
1.3
1.2
26
1.1
24
1.0
22
20
18
0.9
-10
OBH635
-5
0
5
10
15
20
25
30
Outdoor intake air Dry-bulb temperature(°C)
12
35
40
45
7.5
6.5
6.8
5.8
6.1
5.2
5.4
4.6
4.7
Input correction factors
7.2
1.3
1.2
22
20
18
24
26
1.1
1.0
0.9
0.8
Indoor intake air Wet-bulb
temperature( )
-10
MUZ-GF71VE
8.2
MUZ-GF60VE
Indoor air Wet-bulb temperature
difference (°C)
Total input (Cooling : at Rated frequency)
7.9
-5
0
5
10
15
20
25
30
35
40
45
Outdoor intake air Dry-bulb temperature (°C)
1.3
18.4
23.4
1.2
16.9
21.4
15.3
19.5
13.8
17.5
12.3
15.6
10.7
13.6
9.2
11.7
7.7
9.7
6.1
7.8
Capacity correction factor
25.3
ure
rat
1.1
lb
1.0
0.9
ir
ea
tak
0.8
in
or
u
y-b
Dr
e
mp
(
)
15
20
26
te
o
Ind
0.7
0.6
0.5
0.4
-20
MUZ-GF71VE
MUZ-GF60VE
Indoor air Dry-bulb temperature
difference (°C)
Heating capacity (at Rated frequency)
19.9
-15
-10
-5
0
5
10
Outdoor intake air Wet-bulb temperature (°C)
15
1.3
18.4
23.4
1.2
16.9
21.4
15.3
19.5
17.5
12.3
15.6
10.7
13.6
9.2
11.7
7.7
9.7
6.1
7.8
MUZ-GF71VE
13.8
Input correction factor
25.3
MUZ-GF60VE
Indoor air Dry-bulb temperature
difference (°C)
Total input (Heating : at Rated frequency)
19.9
1.1
1.0
0.9
0.8
ulb
ry-b
( )
p
tem
26
20
15
ta
or in
Indo
ir D
ke a
ure
erat
0.7
0.6
0.5
0.4
-20
-15
-10
-5
0
5
10
Outdoor intake air Wet-bulb temperature (°C)
15
NOTE: The above broken lines are for the heating operation without any frost and defrost operation.
OBH635
13
8-2. CAPACITY AND INPUT CORRECTION BY OPERATIONAL FREQUENCY OF COMPRESSOR
MUZ-GF60VE
2.0
Input correction factors
Capacity correction factors
Correction of Cooling input
1.5
1.5
1.0
1.0
0.5
0.5
0.0
0
50
100
150
The operational frequency
of compressor (Hz)
0.0
0
2.0
1.5
1.5
1.0
1.0
0.5
0.5
0.0
0
50
100
150
The operational frequency
of compressor (Hz)
Correction of Heating input
Correction of Heating capacity
Capacity correction factors
2.0
2.0
Capacity correction factors
Correction of Cooling capacity
0.0
0
50
100
150
The operational frequency
of compressor (Hz)
50
100
150
The operational frequency
of compressor (Hz)
MUZ-GF71VE
2.0
Input correction factors
Capacity correction factors
Correction of Cooling input
1.5
1.5
1.0
1.0
0.5
0.5
0.0
0
50
100
150
The operational frequency
of compressor (Hz)
0.0
0
1.5
1.0
0.5
0.0
0
50
100
150
The operational frequency
of compressor (Hz)
Correction of Heating input
Correction of Heating capacity
2.0
Capacity correction factors
2.0
2.0
Capacity correction factors
Correction of Cooling capacity
50
100
150
The operational frequency
of compressor (Hz)
1.5
1.0
0.5
0.0
0
50
100
150
The operational frequency
of compressor (Hz)
8-3. HOW TO OPERATE FIXED-FREQUENCY OPERATION
<Test run operation>
1. Press EMERGENCY OPERATION switch to start COOL or HEAT mode (COOL: Press once, HEAT: Press twice).
2. Test run operation starts and continues to operate for 30 minutes.
3. Compressor operates at rated frequency in COOL mode or 58 Hz (MUZ-GF60VE)/74 Hz (MUZ-GF71VE) in HEAT mode.
4. Indoor fan operates at High speed.
5. After 30 minutes, test run operation finishes and EMERGENCY OPERATION starts (operation frequency of compressor varies).
6. To cancel test run operation (EMERGENCY OPERATION), press EMERGENCY OPERATION switch or any button on
remote controller.
8-4. OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
COOL operation
Both indoor and outdoor unit are under the same temperature/
humidity condition.
Operation: TEST RUN OPERATION (Refer to 8-3.)
MUZ-GF71VE
MUZ-GF60VE
(kgf/cm2 [Gauge])(MPa [Gauge])
0.8
8
Dry-bulb temperature (°C)
20
25
30
(kgf/cm2 [Gauge])(MPa [Gauge])
0.8
8
7
0.7
7
0.7
6
0.6
6
0.6
5
0.5
5
0.5
4
0.4
4
0.4
3
0.3
15
3
0.3
15
20
25
30
35
50
60
70
Ambient temperature(°C)
Ambient humidity(%)
20
25
30
35
50
60
70
Ambient temperature(°C)
Ambient humidity(%)
NOTE:
The unit of pressure has been changed to MPa on the international system of units (SI unit system)
The conversion factor is: 1 (MPa [Gauge]) = 10.2 (kgf/cm2 [Gauge])
OBH635
14
Relative humidity (%)
50
60
70
Outdoor unit current
MUZ-GF71VE
9.0
9.0
8.0
8.0
Outdoor current (A)
Outdoor current (A)
MUZ-GF60VE
7.0
6.0
5.0
4.0
15
7.0
6.0
5.0
4.0
15
20
25
30
35
50
60
70
Ambient temperature (°C)
Ambient humidity(%)
20
50
25
60
30
70
35
Ambient temperature(°C)
Ambient humidity(%)
HEAT operation
Condition:
Dry bulb temperature (°C)
Wet bulb temperature (°C)
Indoor
20.0
14.5
2
1
Outdoor
7
15
6
12
20.0
14.5
Operation: Test run operation (Refer to 8-3.)
Outdoor unit current
MUZ-GF60VE
MUZ-GF71VE
12
5.0
Outdoor current (A)
Outdoor current (A)
5.5
4.5
4.0
3.5
3.0
0
5
10
15
20
25
Ambient temperature (°C)
OBH635
10
8
6
0
5
10
15
20
25
Ambient temperature(°C)
15
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-GF60VE
CAPACITY: 6.1 kW
INDOOR INDOOR
DB (°C) WB (°C)
SHF: 0.79
INPUT: 1790 W
OUTDOOR DB (°C)
21
25
27
30
SHF
INPUT
21
18
7.17
4.37
0.61
1432
6.86
4.19
0.61
1504
6.59
4.02
0.61
1575
6.34
3.87
0.61
1647
21
20
7.47
3.66
0.49
1504
7.17
3.51
0.49
1593
6.95
3.41
0.49
1629
6.71
3.29
0.49
1701
22
18
7.17
4.66
0.65
1432
6.86
4.46
0.65
1504
6.59
4.28
0.65
1575
6.34
4.12
0.65
1647
22
20
7.47
3.96
0.53
1504
7.17
3.80
0.53
1593
6.95
3.69
0.53
1629
6.71
3.56
0.53
1701
22
22
7.78
3.19
0.41
1557
7.50
3.08
0.41
1656
7.32
3.00
0.41
1701
7.01
2.88
0.41
1772
23
18
7.17
4.95
0.69
1432
6.86
4.74
0.69
1504
6.59
4.55
0.69
1575
6.34
4.38
0.69
1647
23
20
7.47
4.26
0.57
1504
7.17
4.09
0.57
1593
6.95
3.96
0.57
1629
6.71
3.82
0.57
1701
23
22
7.78
3.50
0.45
1557
7.50
3.38
0.45
1656
7.32
3.29
0.45
1701
7.01
3.16
0.45
1772
24
18
7.17
5.23
0.73
1432
6.86
5.01
0.73
1504
6.59
4.81
0.73
1575
6.34
4.63
0.73
1647
24
20
7.47
4.56
0.61
1504
7.17
4.37
0.61
1593
6.95
4.24
0.61
1629
6.71
4.09
0.61
1701
24
22
7.78
3.81
0.49
1557
7.50
3.68
0.49
1656
7.32
3.59
0.49
1701
7.01
3.44
0.49
1772
24
24
8.17
3.02
0.37
1629
7.87
2.91
0.37
1718
7.69
2.84
0.37
1772
7.44
2.75
0.37
1862
25
18
7.17
5.52
0.77
1432
6.86
5.28
0.77
1504
6.59
5.07
0.77
1575
6.34
4.88
0.77
1647
25
20
7.47
4.86
0.65
1504
7.17
4.66
0.65
1593
6.95
4.52
0.65
1629
6.71
4.36
0.65
1701
25
22
7.78
4.12
0.53
1557
7.50
3.98
0.53
1656
7.32
3.88
0.53
1701
7.01
3.72
0.53
1772
25
24
8.17
3.35
0.41
1629
7.87
3.23
0.41
1718
7.69
3.15
0.41
1772
7.44
3.05
0.41
1862
26
18
7.17
5.81
0.81
1432
6.86
5.56
0.81
1504
6.59
5.34
0.81
1575
6.34
5.14
0.81
1647
26
20
7.47
5.16
0.69
1504
7.17
4.95
0.69
1593
6.95
4.80
0.69
1629
6.71
4.63
0.69
1701
26
22
7.78
4.43
0.57
1557
7.50
4.28
0.57
1656
7.32
4.17
0.57
1701
7.01
4.00
0.57
1772
26
24
8.17
3.68
0.45
1629
7.87
3.54
0.45
1718
7.69
3.46
0.45
1772
7.44
3.35
0.45
1862
26
26
8.42
2.78
0.33
1718
8.17
2.70
0.33
1808
8.05
2.66
0.33
1862
7.81
2.58
0.33
1915
27
18
7.17
6.09
0.85
1432
6.86
5.83
0.85
1504
6.59
5.60
0.85
1575
6.34
5.39
0.85
1647
27
20
7.47
5.45
0.73
1504
7.17
5.23
0.73
1593
6.95
5.08
0.73
1629
6.71
4.90
0.73
1701
27
22
7.78
4.74
0.61
1557
7.50
4.58
0.61
1656
7.32
4.47
0.61
1701
7.01
4.28
0.61
1772
27
24
8.17
4.01
0.49
1629
7.87
3.86
0.49
1718
7.69
3.77
0.49
1772
7.44
3.65
0.49
1862
27
26
8.42
3.11
0.37
1718
8.17
3.02
0.37
1808
8.05
2.98
0.37
1862
7.81
2.89
0.37
1915
28
18
7.17
6.38
0.89
1432
6.86
6.11
0.89
1504
6.59
5.86
0.89
1575
6.34
5.65
0.89
1647
28
20
7.47
5.75
0.77
1504
7.17
5.52
0.77
1593
6.95
5.35
0.77
1629
6.71
5.17
0.77
1701
28
22
7.78
5.06
0.65
1557
7.50
4.88
0.65
1656
7.32
4.76
0.65
1701
7.01
4.56
0.65
1772
28
24
8.17
4.33
0.53
1629
7.87
4.17
0.53
1718
7.69
4.07
0.53
1772
7.44
3.94
0.53
1862
28
26
8.42
3.45
0.41
1718
8.17
3.35
0.41
1808
8.05
3.30
0.41
1862
7.81
3.20
0.41
1915
29
18
7.17
6.67
0.93
1432
6.86
6.38
0.93
1504
6.59
6.13
0.93
1575
6.34
5.90
0.93
1647
29
20
7.47
6.05
0.81
1504
7.17
5.81
0.81
1593
6.95
5.63
0.81
1629
6.71
5.44
0.81
1701
29
22
7.78
5.37
0.69
1557
7.50
5.18
0.69
1656
7.32
5.05
0.69
1701
7.01
4.84
0.69
1772
29
24
8.17
4.66
0.57
1629
7.87
4.49
0.57
1718
7.69
4.38
0.57
1772
7.44
4.24
0.57
1862
29
26
8.42
3.79
0.45
1718
8.17
3.68
0.45
1808
8.05
3.62
0.45
1862
7.81
3.51
0.45
1915
30
18
7.17
6.95
0.97
1432
6.86
6.66
0.97
1504
6.59
6.39
0.97
1575
6.34
6.15
0.97
1647
30
20
7.47
6.35
0.85
1504
7.17
6.09
0.85
1593
6.95
5.91
0.85
1629
6.71
5.70
0.85
1701
30
22
7.78
5.68
0.73
1557
7.50
5.48
0.73
1656
7.32
5.34
0.73
1701
7.01
5.12
0.73
1772
30
24
8.17
4.99
0.61
1629
7.87
4.80
0.61
1718
7.69
4.69
0.61
1772
7.44
4.54
0.61
1862
30
26
8.42
4.12
0.49
1718
8.17
4.01
0.49
1808
8.05
3.95
0.49
1862
7.81
3.83
0.49
1915
31
18
7.17
7.17
1.00
1432
6.86
6.86
1.00
1504
6.59
6.59
1.00
1575
6.34
6.34
1.00
1647
31
20
7.47
6.65
0.89
1504
7.17
6.38
0.89
1593
6.95
6.19
0.89
1629
6.71
5.97
0.89
1701
31
22
7.78
5.99
0.77
1557
7.50
5.78
0.77
1656
7.32
5.64
0.77
1701
7.01
5.40
0.77
1772
31
24
8.17
5.31
0.65
1629
7.87
5.11
0.65
1718
7.69
5.00
0.65
1772
7.44
4.84
0.65
1862
31
26
8.42
4.46
0.53
1718
8.17
4.33
0.53
1808
8.05
4.27
0.53
1862
7.81
4.14
0.53
1915
32
18
7.17
7.17
1.00
1432
6.86
6.86
1.00
1504
6.59
6.59
1.00
1575
6.34
6.34
1.00
1647
32
20
7.47
6.95
0.93
1504
7.17
6.67
0.93
1593
6.95
6.47
0.93
1629
6.71
6.24
0.93
1701
32
22
7.78
6.30
0.81
1557
7.50
6.08
0.81
1656
7.32
5.93
0.81
1701
7.01
5.68
0.81
1772
32
24
8.17
5.64
0.69
1629
7.87
5.43
0.69
1718
7.69
5.30
0.69
1772
7.44
5.13
0.69
1862
32
26
8.42
4.80
0.57
1718
8.17
4.66
0.57
1808
8.05
4.59
0.57
1862
7.81
4.45
0.57
1915
NOTE
Q
SHC
SHF
INPUT
Q
SHC
SHF
INPUT
Q
SHC
SHF
INPUT
Q
SHC
Q : Total capacity (kW)
SHC : Sensible heat capacity (kW)
OBH635
SHF : Sensible heat factor
INPUT : Total power input (W)
16
DB : Dry-bulb temperature
WB : Wet-bulb temperature
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-GF60VE
CAPACITY: 6.1 kW
INDOOR INDOOR
DB (°C) WB (°C)
SHF: 0.79
INPUT: 1790 W
OUTDOOR DB (°C)
35
40
46
SHF
INPUT
21
18
5.98
3.65
0.61
1754
5.49
3.35
0.61
1862
5.06
3.09
0.61
1933
21
20
6.28
3.08
0.49
1826
5.86
2.87
0.49
1915
5.43
2.66
0.49
2023
22
18
5.98
3.89
0.65
1754
5.49
3.57
0.65
1862
5.06
3.29
0.65
1933
22
20
6.28
3.33
0.53
1826
5.86
3.10
0.53
1915
5.43
2.88
0.53
2023
22
22
6.65
2.73
0.41
1897
6.22
2.55
0.41
2005
5.79
2.38
0.41
2076
23
18
5.98
4.12
0.69
1754
5.49
3.79
0.69
1862
5.06
3.49
0.69
1933
23
20
6.28
3.58
0.57
1826
5.86
3.34
0.57
1915
5.43
3.09
0.57
2023
23
22
6.65
2.99
0.45
1897
6.22
2.80
0.45
2005
5.79
2.61
0.45
2076
24
18
5.98
4.36
0.73
1754
5.49
4.01
0.73
1862
5.06
3.70
0.73
1933
24
20
6.28
3.83
0.61
1826
5.86
3.57
0.61
1915
5.43
3.31
0.61
2023
24
22
6.65
3.26
0.49
1897
6.22
3.05
0.49
2005
5.79
2.84
0.49
2076
24
24
7.01
2.60
0.37
1969
6.59
2.44
0.37
2059
6.22
2.30
0.37
2148
25
18
5.98
4.60
0.77
1754
5.49
4.23
0.77
1862
5.06
3.90
0.77
1933
25
20
6.28
4.08
0.65
1826
5.86
3.81
0.65
1915
5.43
3.53
0.65
2023
25
22
6.65
3.52
0.53
1897
6.22
3.30
0.53
2005
5.79
3.07
0.53
2076
25
24
7.01
2.88
0.41
1969
6.59
2.70
0.41
2059
6.22
2.55
0.41
2148
26
18
5.98
4.84
0.81
1754
5.49
4.45
0.81
1862
5.06
4.10
0.81
1933
26
20
6.28
4.34
0.69
1826
5.86
4.04
0.69
1915
5.43
3.75
0.69
2023
26
22
6.65
3.79
0.57
1897
6.22
3.55
0.57
2005
5.79
3.30
0.57
2076
26
24
7.01
3.16
0.45
1969
6.59
2.96
0.45
2059
6.22
2.80
0.45
2148
26
26
7.38
2.44
0.33
2041
6.95
2.29
0.33
2130
6.53
2.15
0.33
2220
27
18
5.98
5.08
0.85
1754
5.49
4.67
0.85
1862
5.06
4.30
0.85
1933
27
20
6.28
4.59
0.73
1826
5.86
4.27
0.73
1915
5.43
3.96
0.73
2023
27
22
6.65
4.06
0.61
1897
6.22
3.80
0.61
2005
5.79
3.53
0.61
2076
27
24
7.01
3.44
0.49
1969
6.59
3.23
0.49
2059
6.22
3.05
0.49
2148
27
26
7.38
2.73
0.37
2041
6.95
2.57
0.37
2130
6.53
2.41
0.37
2220
28
18
5.98
5.32
0.89
1754
5.49
4.89
0.89
1862
5.06
4.51
0.89
1933
28
20
6.28
4.84
0.77
1826
5.86
4.51
0.77
1915
5.43
4.18
0.77
2023
28
22
6.65
4.32
0.65
1897
6.22
4.04
0.65
2005
5.79
3.77
0.65
2076
28
24
7.01
3.72
0.53
1969
6.59
3.49
0.53
2059
6.22
3.30
0.53
2148
28
26
7.38
3.03
0.41
2041
6.95
2.85
0.41
2130
6.53
2.68
0.41
2220
29
18
5.98
5.56
0.93
1754
5.49
5.11
0.93
1862
5.06
4.71
0.93
1933
29
20
6.28
5.09
0.81
1826
5.86
4.74
0.81
1915
5.43
4.40
0.81
2023
29
22
6.65
4.59
0.69
1897
6.22
4.29
0.69
2005
5.79
4.00
0.69
2076
29
24
7.01
4.00
0.57
1969
6.59
3.76
0.57
2059
6.22
3.55
0.57
2148
29
26
7.38
3.32
0.45
2041
6.95
3.13
0.45
2130
6.53
2.94
0.45
2220
30
18
5.98
5.80
0.97
1754
5.49
5.33
0.97
1862
5.06
4.91
0.97
1933
30
20
6.28
5.34
0.85
1826
5.86
4.98
0.85
1915
5.43
4.61
0.85
2023
30
22
6.65
4.85
0.73
1897
6.22
4.54
0.73
2005
5.79
4.23
0.73
2076
30
24
7.01
4.28
0.61
1969
6.59
4.02
0.61
2059
6.22
3.80
0.61
2148
30
26
7.38
3.62
0.49
2041
6.95
3.41
0.49
2130
6.53
3.20
0.49
2220
31
18
5.98
5.98
1.00
1754
5.49
5.49
1.00
1862
5.06
5.06
1.00
1933
31
20
6.28
5.59
0.89
1826
5.86
5.21
0.89
1915
5.43
4.83
0.89
2023
31
22
6.65
5.12
0.77
1897
6.22
4.79
0.77
2005
5.79
4.46
0.77
2076
31
24
7.01
4.56
0.65
1969
6.59
4.28
0.65
2059
6.22
4.04
0.65
2148
31
26
7.38
3.91
0.53
2041
6.95
3.69
0.53
2130
6.53
3.46
0.53
2220
32
18
5.98
5.98
1.00
1754
5.49
5.49
1.00
1862
5.06
5.06
1.00
1933
32
20
6.28
5.84
0.93
1826
5.86
5.45
0.93
1915
5.43
5.05
0.93
2023
32
22
6.65
5.39
0.81
1897
6.22
5.04
0.81
2005
5.79
4.69
0.81
2076
32
24
7.01
4.84
0.69
1969
6.59
4.55
0.69
2059
6.22
4.29
0.69
2148
32
26
7.38
4.21
0.57
2041
6.95
3.96
0.57
2130
6.53
3.72
0.57
2220
NOTE
Q
SHC
SHF
INPUT
Q
SHC
SHF
INPUT
Q
SHC
Q : Total capacity (kW)
SHC : Sensible heat capacity (kW)
OBH635
SHF : Sensible heat factor
INPUT : Total power input (W)
17
DB : Dry-bulb temperature
WB : Wet-bulb temperature
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-GF71VE
CAPACITY: 7.1 kW
INDOOR INDOOR
DB (°C) WB (°C)
SHF: 0.78
INPUT: 2130 W
OUTDOOR DB (°C)
21
25
27
30
SHF
INPUT
21
18
8.34
5.01
0.60
1704
7.99
4.79
0.60
1789
7.67
4.60
0.60
1874
7.38
4.43
0.60
1960
21
20
8.70
4.17
0.48
1789
8.34
4.00
0.48
1896
8.09
3.89
0.48
1938
7.81
3.75
0.48
2024
22
18
8.34
5.34
0.64
1704
7.99
5.11
0.64
1789
7.67
4.91
0.64
1874
7.38
4.73
0.64
1960
22
20
8.70
4.52
0.52
1789
8.34
4.34
0.52
1896
8.09
4.21
0.52
1938
7.81
4.06
0.52
2024
22
22
9.05
3.62
0.40
1853
8.73
3.49
0.40
1970
8.52
3.41
0.40
2024
8.17
3.27
0.40
2109
23
18
8.34
5.67
0.68
1704
7.99
5.43
0.68
1789
7.67
5.21
0.68
1874
7.38
5.02
0.68
1960
23
20
8.70
4.87
0.56
1789
8.34
4.67
0.56
1896
8.09
4.53
0.56
1938
7.81
4.37
0.56
2024
23
22
9.05
3.98
0.44
1853
8.73
3.84
0.44
1970
8.52
3.75
0.44
2024
8.17
3.59
0.44
2109
24
18
8.34
6.01
0.72
1704
7.99
5.75
0.72
1789
7.67
5.52
0.72
1874
7.38
5.32
0.72
1960
24
20
8.70
5.22
0.60
1789
8.34
5.01
0.60
1896
8.09
4.86
0.60
1938
7.81
4.69
0.60
2024
24
22
9.05
4.35
0.48
1853
8.73
4.19
0.48
1970
8.52
4.09
0.48
2024
8.17
3.92
0.48
2109
24
24
9.51
3.43
0.36
1938
9.16
3.30
0.36
2045
8.95
3.22
0.36
2109
8.66
3.12
0.36
2215
25
18
8.34
6.34
0.76
1704
7.99
6.07
0.76
1789
7.67
5.83
0.76
1874
7.38
5.61
0.76
1960
25
20
8.70
5.57
0.64
1789
8.34
5.34
0.64
1896
8.09
5.18
0.64
1938
7.81
5.00
0.64
2024
25
22
9.05
4.71
0.52
1853
8.73
4.54
0.52
1970
8.52
4.43
0.52
2024
8.17
4.25
0.52
2109
25
24
9.51
3.81
0.40
1938
9.16
3.66
0.40
2045
8.95
3.58
0.40
2109
8.66
3.46
0.40
2215
26
18
8.34
6.67
0.80
1704
7.99
6.39
0.80
1789
7.67
6.13
0.80
1874
7.38
5.91
0.80
1960
26
20
8.70
5.91
0.68
1789
8.34
5.67
0.68
1896
8.09
5.50
0.68
1938
7.81
5.31
0.68
2024
26
22
9.05
5.07
0.56
1853
8.73
4.89
0.56
1970
8.52
4.77
0.56
2024
8.17
4.57
0.56
2109
26
24
9.51
4.19
0.44
1938
9.16
4.03
0.44
2045
8.95
3.94
0.44
2109
8.66
3.81
0.44
2215
26
26
9.80
3.14
0.32
2045
9.51
3.04
0.32
2151
9.37
3.00
0.32
2215
9.09
2.91
0.32
2279
27
18
8.34
7.01
0.84
1704
7.99
6.71
0.84
1789
7.67
6.44
0.84
1874
7.38
6.20
0.84
1960
27
20
8.70
6.26
0.72
1789
8.34
6.01
0.72
1896
8.09
5.83
0.72
1938
7.81
5.62
0.72
2024
27
22
9.05
5.43
0.60
1853
8.73
5.24
0.60
1970
8.52
5.11
0.60
2024
8.17
4.90
0.60
2109
27
24
9.51
4.57
0.48
1938
9.16
4.40
0.48
2045
8.95
4.29
0.48
2109
8.66
4.16
0.48
2215
27
26
9.80
3.53
0.36
2045
9.51
3.43
0.36
2151
9.37
3.37
0.36
2215
9.09
3.27
0.36
2279
28
18
8.34
7.34
0.88
1704
7.99
7.03
0.88
1789
7.67
6.75
0.88
1874
7.38
6.50
0.88
1960
28
20
8.70
6.61
0.76
1789
8.34
6.34
0.76
1896
8.09
6.15
0.76
1938
7.81
5.94
0.76
2024
28
22
9.05
5.79
0.64
1853
8.73
5.59
0.64
1970
8.52
5.45
0.64
2024
8.17
5.23
0.64
2109
28
24
9.51
4.95
0.52
1938
9.16
4.76
0.52
2045
8.95
4.65
0.52
2109
8.66
4.50
0.52
2215
28
26
9.80
3.92
0.40
2045
9.51
3.81
0.40
2151
9.37
3.75
0.40
2215
9.09
3.64
0.40
2279
29
18
8.34
7.68
0.92
1704
7.99
7.35
0.92
1789
7.67
7.05
0.92
1874
7.38
6.79
0.92
1960
29
20
8.70
6.96
0.80
1789
8.34
6.67
0.80
1896
8.09
6.48
0.80
1938
7.81
6.25
0.80
2024
29
22
9.05
6.16
0.68
1853
8.73
5.94
0.68
1970
8.52
5.79
0.68
2024
8.17
5.55
0.68
2109
29
24
9.51
5.33
0.56
1938
9.16
5.13
0.56
2045
8.95
5.01
0.56
2109
8.66
4.85
0.56
2215
29
26
9.80
4.31
0.44
2045
9.51
4.19
0.44
2151
9.37
4.12
0.44
2215
9.09
4.00
0.44
2279
30
18
8.34
8.01
0.96
1704
7.99
7.67
0.96
1789
7.67
7.36
0.96
1874
7.38
7.09
0.96
1960
30
20
8.70
7.31
0.84
1789
8.34
7.01
0.84
1896
8.09
6.80
0.84
1938
7.81
6.56
0.84
2024
30
22
9.05
6.52
0.72
1853
8.73
6.29
0.72
1970
8.52
6.13
0.72
2024
8.17
5.88
0.72
2109
30
24
9.51
5.71
0.60
1938
9.16
5.50
0.60
2045
8.95
5.37
0.60
2109
8.66
5.20
0.60
2215
30
26
9.80
4.70
0.48
2045
9.51
4.57
0.48
2151
9.37
4.50
0.48
2215
9.09
4.36
0.48
2279
31
18
8.34
8.34
1.00
1704
7.99
7.99
1.00
1789
7.67
7.67
1.00
1874
7.38
7.38
1.00
1960
31
20
8.70
7.65
0.88
1789
8.34
7.34
0.88
1896
8.09
7.12
0.88
1938
7.81
6.87
0.88
2024
31
22
9.05
6.88
0.76
1853
8.73
6.64
0.76
1970
8.52
6.48
0.76
2024
8.17
6.21
0.76
2109
31
24
9.51
6.09
0.64
1938
9.16
5.86
0.64
2045
8.95
5.73
0.64
2109
8.66
5.54
0.64
2215
31
26
9.80
5.09
0.52
2045
9.51
4.95
0.52
2151
9.37
4.87
0.52
2215
9.09
4.73
0.52
2279
32
18
8.34
8.34
1.00
1704
7.99
7.99
1.00
1789
7.67
7.67
1.00
1874
7.38
7.38
1.00
1960
32
20
8.70
8.00
0.92
1789
8.34
7.68
0.92
1896
8.09
7.45
0.92
1938
7.81
7.19
0.92
2024
32
22
9.05
7.24
0.80
1853
8.73
6.99
0.80
1970
8.52
6.82
0.80
2024
8.17
6.53
0.80
2109
32
24
9.51
6.47
0.68
1938
9.16
6.23
0.68
2045
8.95
6.08
0.68
2109
8.66
5.89
0.68
2215
32
26
9.80
5.49
0.56
2045
9.51
5.33
0.56
2151
9.37
5.25
0.56
2215
9.09
5.09
0.56
2279
NOTE
Q
SHC
SHF
INPUT
Q
SHC
SHF
INPUT
Q
SHC
SHF
INPUT
Q
SHC
Q : Total capacity (kW)
SHC : Sensible heat capacity (kW)
OBH635
SHF : Sensible heat factor
INPUT : Total power input (W)
18
DB : Dry-bulb temperature
WB : Wet-bulb temperature
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-GF71VE
CAPACITY: 7.1 kW
INDOOR INDOOR
DB (°C) WB (°C)
SHF: 0.78
INPUT: 2130 W
OUTDOOR DB (°C)
35
40
46
SHF
INPUT
21
18
6.96
4.17
0.60
2087
6.39
3.83
0.60
2215
5.89
3.54
0.60
2300
21
20
7.31
3.51
0.48
2173
6.82
3.27
0.48
2279
6.32
3.03
0.48
2407
22
18
6.96
4.45
0.64
2087
6.39
4.09
0.64
2215
5.89
3.77
0.64
2300
22
20
7.31
3.80
0.52
2173
6.82
3.54
0.52
2279
6.32
3.29
0.52
2407
22
22
7.74
3.10
0.40
2258
7.24
2.90
0.40
2386
6.75
2.70
0.40
2471
23
18
6.96
4.73
0.68
2087
6.39
4.35
0.68
2215
5.89
4.01
0.68
2300
23
20
7.31
4.10
0.56
2173
6.82
3.82
0.56
2279
6.32
3.54
0.56
2407
23
22
7.74
3.41
0.44
2258
7.24
3.19
0.44
2386
6.75
2.97
0.44
2471
24
18
6.96
5.01
0.72
2087
6.39
4.60
0.72
2215
5.89
4.24
0.72
2300
24
20
7.31
4.39
0.60
2173
6.82
4.09
0.60
2279
6.32
3.79
0.60
2407
24
22
7.74
3.71
0.48
2258
7.24
3.48
0.48
2386
6.75
3.24
0.48
2471
24
24
8.17
2.94
0.36
2343
7.67
2.76
0.36
2450
7.24
2.61
0.36
2556
25
18
6.96
5.29
0.76
2087
6.39
4.86
0.76
2215
5.89
4.48
0.76
2300
25
20
7.31
4.68
0.64
2173
6.82
4.36
0.64
2279
6.32
4.04
0.64
2407
25
22
7.74
4.02
0.52
2258
7.24
3.77
0.52
2386
6.75
3.51
0.52
2471
25
24
8.17
3.27
0.40
2343
7.67
3.07
0.40
2450
7.24
2.90
0.40
2556
26
18
6.96
5.57
0.80
2087
6.39
5.11
0.80
2215
5.89
4.71
0.80
2300
26
20
7.31
4.97
0.68
2173
6.82
4.63
0.68
2279
6.32
4.30
0.68
2407
26
22
7.74
4.33
0.56
2258
7.24
4.06
0.56
2386
6.75
3.78
0.56
2471
26
24
8.17
3.59
0.44
2343
7.67
3.37
0.44
2450
7.24
3.19
0.44
2556
26
26
8.59
2.75
0.32
2428
8.09
2.59
0.32
2535
7.60
2.43
0.32
2641
27
18
6.96
5.84
0.84
2087
6.39
5.37
0.84
2215
5.89
4.95
0.84
2300
27
20
7.31
5.27
0.72
2173
6.82
4.91
0.72
2279
6.32
4.55
0.72
2407
27
22
7.74
4.64
0.60
2258
7.24
4.35
0.60
2386
6.75
4.05
0.60
2471
27
24
8.17
3.92
0.48
2343
7.67
3.68
0.48
2450
7.24
3.48
0.48
2556
27
26
8.59
3.09
0.36
2428
8.09
2.91
0.36
2535
7.60
2.73
0.36
2641
28
18
6.96
6.12
0.88
2087
6.39
5.62
0.88
2215
5.89
5.19
0.88
2300
28
20
7.31
5.56
0.76
2173
6.82
5.18
0.76
2279
6.32
4.80
0.76
2407
28
22
7.74
4.95
0.64
2258
7.24
4.63
0.64
2386
6.75
4.32
0.64
2471
28
24
8.17
4.25
0.52
2343
7.67
3.99
0.52
2450
7.24
3.77
0.52
2556
28
26
8.59
3.44
0.40
2428
8.09
3.24
0.40
2535
7.60
3.04
0.40
2641
29
18
6.96
6.40
0.92
2087
6.39
5.88
0.92
2215
5.89
5.42
0.92
2300
29
20
7.31
5.85
0.80
2173
6.82
5.45
0.80
2279
6.32
5.06
0.80
2407
29
22
7.74
5.26
0.68
2258
7.24
4.92
0.68
2386
6.75
4.59
0.68
2471
29
24
8.17
4.57
0.56
2343
7.67
4.29
0.56
2450
7.24
4.06
0.56
2556
29
26
8.59
3.78
0.44
2428
8.09
3.56
0.44
2535
7.60
3.34
0.44
2641
30
18
6.96
6.68
0.96
2087
6.39
6.13
0.96
2215
5.89
5.66
0.96
2300
30
20
7.31
6.14
0.84
2173
6.82
5.73
0.84
2279
6.32
5.31
0.84
2407
30
22
7.74
5.57
0.72
2258
7.24
5.21
0.72
2386
6.75
4.86
0.72
2471
30
24
8.17
4.90
0.60
2343
7.67
4.60
0.60
2450
7.24
4.35
0.60
2556
30
26
8.59
4.12
0.48
2428
8.09
3.89
0.48
2535
7.60
3.65
0.48
2641
31
18
6.96
6.96
1.00
2087
6.39
6.39
1.00
2215
5.89
5.89
1.00
2300
31
20
7.31
6.44
0.88
2173
6.82
6.00
0.88
2279
6.32
5.56
0.88
2407
31
22
7.74
5.88
0.76
2258
7.24
5.50
0.76
2386
6.75
5.13
0.76
2471
31
24
8.17
5.23
0.64
2343
7.67
4.91
0.64
2450
7.24
4.63
0.64
2556
31
26
8.59
4.47
0.52
2428
8.09
4.21
0.52
2535
7.60
3.95
0.52
2641
32
18
6.96
6.96
1.00
2087
6.39
6.39
1.00
2215
5.89
5.89
1.00
2300
32
20
7.31
6.73
0.92
2173
6.82
6.27
0.92
2279
6.32
5.81
0.92
2407
32
22
7.74
6.19
0.80
2258
7.24
5.79
0.80
2386
6.75
5.40
0.80
2471
32
24
8.17
5.55
0.68
2343
7.67
5.21
0.68
2450
7.24
4.92
0.68
2556
32
26
8.59
4.81
0.56
2428
8.09
4.53
0.56
2535
7.60
4.25
0.56
2641
NOTE
Q
SHC
SHF
INPUT
Q
SHC
SHF
INPUT
Q
SHC
Q : Total capacity (kW)
SHC : Sensible heat capacity (kW)
OBH635
SHF : Sensible heat factor
INPUT : Total power input (W)
19
DB : Dry-bulb temperature
WB : Wet-bulb temperature
PERFORMANCE DATA HEAT operation at Rated frequency
MUZ-GF60VE
CAPACITY: 6.8 kW
INDOOR
DB (°C)
INPUT: 1810 W
OUTDOOR WB (°C)
-10
-5
0
5
10
15
20
Q
INPUT
Q
INPUT
Q
INPUT
Q
INPUT
Q
INPUT
Q
INPUT
Q
INPUT
15
4.28
1177
5.17
1412
6.05
1593
6.94
1720
7.82
1828
8.64
1882
9.52
1919
21
4.08
1267
4.90
1502
5.78
1665
6.60
1792
7.48
1882
8.30
1937
9.15
2009
26
3.67
1358
4.56
1593
5.37
1756
6.26
1882
7.14
1973
7.96
2027
8.84
2082
MUZ-GF71VE
CAPACITY: 8.1 kW
INDOOR
DB (°C)
INPUT: 2230 W
OUTDOOR WB (°C)
-10
-5
0
5
10
15
20
Q
INPUT
Q
INPUT
Q
INPUT
Q
INPUT
Q
INPUT
Q
INPUT
Q
15
5.10
1450
6.16
1739
7.21
1962
8.26
2119
9.32
2252
10.29
2319
11.34
INPUT
2364
21
4.86
1561
5.83
1851
6.89
2052
7.86
2208
8.91
2319
9.88
2386
10.89
2475
26
4.37
1673
5.43
1962
6.40
2163
7.45
2319
8.51
2431
9.48
2498
10.53
2565
NOTE: Q: Total capacity (kW) INPUT : Total power input (W) DB: Dry-bulb temperature WB: Wet-bulb temperature
OBH635
20
9
ACTUATOR CONTROL
MUZ-GF60VE MUZ-GF71VE
9-1. OUTDOOR FAN MOTOR CONTROL
The fan motor turns ON/OFF, interlocking with the compressor.
[ON] The fan motor turns ON 5 seconds before the compressor starts up.
[OFF] The fan motor turns OFF 15 seconds after the compressor has stopped running.
5 seconds
15 seconds
ON
Compressor
OFF
ON
Outdoor fan
motor
OFF
9-2. R.V. COIL CONTROL
Heating . . . . . . . . . . . . . . . . . ON
Cooling . . . . . . . . . . . . . . . . . OFF
Dry . . . . . . . . . . . . . . . . . . . . OFF
NOTE: The 4-way valve reverses for 5 seconds right before start-up of the compressor.
<COOL>
<HEAT>
5 seconds
Compressor
ON
OFF
R.V.coil
ON
OFF
5 seconds
Outdoor fan ON
OFF
motor
9-3. RELATION BETWEEN MAIN SENSOR AND ACTUATOR
Sensor
Discharge temperature
thermistor
Indoor coil temperature
thermistor
Defrost thermistor
Fin temperature thermistor
Ambient temperature
thermistor
Outdoor heat exchanger temperature thermistor
OBH635
Purpose
Protection
Cooling: Coil frost prevention
Heating: High pressure protection
Heating: Defrosting
Protection
Cooling: Low ambient temperature operation
Heating: Defrosting (Heater)
Cooling: Low ambient temperature operation
Cooling: High pressure protection
Actuator
Outdoor fan R.V.coil
motor
Compressor
LEV
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
21
○
Indoor fan
motor
Defrost
heater
○
○
10
SERVICE FUNCTIONS
MUZ-GF60VE MUZ-GF71VE
10-1. CHANGE IN DEFROST SETTING
Changing defrost finish temperature
<JS> To change the defrost finish temperature, cut/solder the JS wire of the outdoor inverter P.C. board. (Refer to
11-6-1.)
Defrost finish temperature (°C)
Jumper wire
JS
MUZ-GF
60VE
71VE
Soldered (Initial setting)
10
10
None (Cut)
18
18
10-2. PRE-HEAT CONTROL SETTING
PRE-HEAT CONTROL
Prolonged low load operation, in which the thermostat is OFF for a long time, at low outside temperature (0°C or less)
may cause the following troubles. To prevent those troubles, activate the pre-heat control.
1) If moisture gets into the refrigerant cycle and freezes, it may interfer the start-up of the compressor.
2) If liquid refrigerant collects in the compressor, a failure in the compressor may occur.
The pre-heat control turns ON when the compressor temperature is 20°C or below. When the pre-heat control turns ON,
the compressor is energized. (About 70 W)
Pre-heat control setting
<JK>
ON: To activate the pre-heat control, cut JK wire of the inverter P.C. board.
OFF: To deactivate the pre-heat control, solder JK wire of the inverter P.C. board.
(Refer to 11-6.1)
NOTE: When the inverter P.C. board is replaced, check JK wire, and cut/solder it if necessary.
11
TROUBLESHOOTING
MUZ-GF60VE MUZ-GF71VE
11-1. CAUTIONS ON TROUBLESHOOTING
1. Before troubleshooting, check the following
1) Check the power supply voltage.
2) Check the indoor/outdoor connecting wire for miswiring.
2. Take care of the following during servicing
1) Before servicing the air conditioner, be sure to turn OFF the main unit first with the remote controller, and after confirming the horizontal vane is closed, turn OFF the breaker and/or disconnect the power plug.
2) Be sure to turn OFF the power supply before removing the front panel, the cabinet, the top panel, and the electronic
control P.C. board.
3) When removing the electrical parts, be careful of the residual voltage of smoothing capacitor.
4) When removing the electronic control P.C. board, hold the edge of the board with care NOT to apply stress on the
components.
5) When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires.
<Incorrect>
<Correct>
Lead wiring
Housing point
3. Troubleshooting procedure
1) Check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate an abnormality. To
make sure, check how many times the OPERATION INDICATOR lamp is flashing on and off before starting service
work.
2) Before servicing, check that the connector and terminal are connected properly.
3) When the electronic control P.C. board seems to be defective, check the copper foil pattern for disconnection and
the components for bursting and discoloration.
4) Refer to 11-2 and 11-3.
OBH635
22
11-2. FAILURE MODE RECALL FUNCTION
Outline of the function
This air conditioner can memorize the abnormal condition which has occurred once.
Even though LED indication listed on the troubleshooting check table (11-3.) disappears, the memorized failure details can be recalled.
1. Flow chart of failure mode recall function for the indoor/outdoor unit
Operational procedure
The cause of abnormality cannot be found because the abnormality does not recur.
Setting up the failure mode recall function
Turn ON the power supply.
<Preparation of the remote controller>
While pressing both OPERATION SELECT button and TEMP
button on the remote
controller at the same time, press RESET button.
First, release RESET button.
Hold down the other two buttons for another 3 seconds. Make sure that the indicators
on the LCD screen shown in the right figure are all displayed. Then release the buttons.
Press OPERATE/STOP (ON/OFF) button of the remote controller (the set temperature
is displayed) with the remote controller headed towards the indoor unit. 1
1. Regardless of normal or abnormal condition,
a short beep is emitted once the signal is
received.
Does the upper lamp of OPERATION INDICATOR lamp on the
indoor unit blink at the interval of 0.5 seconds?
Blinks: Either indoor or outdoor unit is abnormal. Beep is
emitted at the same timing as the blinking of the upper
lamp of OPERATION INDICATOR lamp. 2
Yes
(Blinks)
Judgment of indoor/outdoor abnormality
Before blinking, does the upper lamp of OPERATION INDICATOR lamp stay ON for 3 seconds?
Stays ON for 3 seconds (without beep):
The outdoor unit is abnormal.
Indoor unit is normal.
But the outdoor unit might be abnormal because there are some abnormalities that can not be recalled with this way.
Confirm if outdoor unit is abnormal according to the detailed outdoor
unit failure mode recall function. (Refer to 11-2.2)
No
(OFF)
Yes
No
The indoor unit is abnormal.
Check the blinking pattern, and identify the abnormal point with the indoor unit
failure mode table. (Refer to indoor unit service manual.)
2
Make sure to check at least two consecutive blinking cycles.
The outdoor unit is abnormal.
Check the blinking pattern, and confirm the abnormal point with the
outdoor unit failure mode table. (Refer to 11-2.3)
Make sure to check at least two consecutive blinking cycles. 3
Releasing the failure mode recall function
Release the failure mode recall function by the following procedures.
Turn OFF the power supply and turn it ON again.
Press RESET button of the remote controller.
Repair the failure parts.
Deleting the memorized abnormal condition
After repairing the unit, recall the failure mode again according to "Setting up the failure mode recall
function" mentioned above.
Press OPERATE/STOP (ON/OFF) button of the remote controller (the set temperature is displayed)
with the remote controller headed towards the indoor unit.
Press EMERGENCY OPERATION switch so that the memorized abnormal condition is deleted.
Release the failure mode recall function according to "Releasing the failure mode recall function"
mentioned above.
NOTE: 1. Make sure to release the failure mode recall function after it is set up, otherwise the unit cannot operate properly.
2. If the abnormal condition is not deleted from the memory, the last abnormal condition is kept memorized.
2. Blinking pattern when the indoor unit is abnormal:
Blinking at 0.52.5-second OFF second interval
Blinking at 0.52.5-second OFF second interval
ON
OFF
Beeps
Repeated cycle
Beeps
Repeated cycle
3.Blinking pattern when the outdoor unit is abnormal:
Blinking at 0.52.5-second OFF
3-second ON
second interval
Beeps
Repeated cycle
2.5-second OFF
3-second ON
Blinking at 0.5second interval
ON
OFF
No beep
Repeated cycle
OBH635
Beeps
No beep
Repeated cycle
23
Beeps
Repeated cycle
2. Flow chart of the detailed outdoor unit failure mode recall function
Operational procedure
The outdoor unit might be abnormal.
Check if outdoor unit is abnormal according to the following procedures.
Make sure that the remote controller is set to the failure mode recall function.
1. Regardless of normal or abnormal condition, 2 short
beeps are emitted as the signal is received.
With the remote controller headed towards the indoor unit, press
TEMP
or button to adjust the set temperature to 25°C. 1
Does the upper lamp of OPERATION INDICATOR
lamp on the indoor unit blink at the interval of 0.5
seconds?
Blinks: The outdoor unit is abnormal. Beep is emitted
at the same timing as the blinking of the upper
lamp of OPERATION INDICATOR lamp. 2
Yes
(Blinks)
NOTE: It takes up to 1 minute to indicate the outdoor unit
abnormality.
Even if the OPERATION INDICATOR lamp is not
lighting, keep checking at least 1 minute or longer.
No
(OFF)
The outdoor unit is abnormal.
Check the blinking pattern, and identify the abnormal point with the outdoor unit failure mode table (11-2.3.).
Make sure to check at least two consecutive blinking cycles. 2
The outdoor unit is normal.
Releasing the failure mode recall function
Release the failure mode recall function by the following procedures.
Turn OFF the power supply and turn it ON again.
Press RESET button of the remote controller.
Release the failure mode recall function according to the left mentioned procedure.
Repair the failure parts.
Deleting the memorized abnormal condition
After repairing the unit, recall the failure mode again according to "Setting up the failure mode recall
function" (11-2.1.).
Press OPERATE/STOP (ON/OFF) button of the remote controller (the set temperature is displayed) with
the remote controller headed towards the indoor unit.
Press EMERGENCY OPERATION switch so that the memorized abnormal condition is deleted. 4
Release the failure mode recall function according to "Releasing the failure mode recall function" mentioned above.
4 The information regarding whether the
connected outdoor unit is a low-standbypower model or a non-low-standby-power
model will also be initialized.
(Default= compatible with a low-standbypower model)
NOTE: 1. Make sure to release the failure mode recall function after it is set up, otherwise the unit cannot operate properly.
2. If the abnormal condition is not deleted from the memory, the last abnormal condition is kept memorized.
2.Blinking pattern when outdoor unit is abnormal:
2.5-second OFF
3-second ON
Blinking at 0.5second interval
2.5-second OFF
3-second ON
Blinking at 0.5second interval
ON
OFF
No beep
Repeated cycle
OBH635
No beep
Repeated cycle
Beeps
24
Beeps
Repeated cycle
3. Outdoor unit failure mode table
The upper
lamp of
OPERATION
Abnormal point
INDICATOR
(Failure mode / protection)
lamp
(Indoor unit)
OFF
None (Normal)
1-time flash
2.5 seconds
OFF
LED indication
(Outdoor P.C. board)
—
—
—
—
Any signals from the inverter P.C.
•Refer to 11-5. How
board cannot be received normally for to check miswiring and
3 minutes.
serial signal error.
Indoor/outdoor
communication, receiving
error
—
Although the inverter P.C. board sends •Refer to 11-5. How
signal "0", signal "1" has been received to check miswiring and
30 consecutive times.
serial signal error.
Outdoor power system
3-time flash
2.5 seconds
OFF
Discharge temperature
thermistor
Defrost thermistor
1-time flash every
2.5 seconds
Fin temperature thermistor
3-time flash
2.5 seconds OFF
4-time flash
2.5 seconds OFF
2-time flash
2.5 seconds OFF
—
P.C. board temperature
thermistor
Ambient temperature
thermistor
Outdoor heat exchanger
temperature thermistor
Overcurrent
Compressor synchronous
abnormality (Compressor
start-up failure protection)
5-time flash
2.5 seconds
OFF
Discharge temperature
6-time flash
2.5 seconds
OFF
High pressure
7-time flash
2.5 seconds
OFF
Fin temperature/ P.C. board
temperature
8-time flash
2.5 seconds
OFF
Outdoor fan motor
9-time flash
2.5 seconds
OFF
Memory data
12-time flash
2.5 seconds OFF
—
7-time flash
2.5 seconds OFF
—
IGBT module (IC700)
Discharge temperature
11-time flash
2.5 seconds
OFF
Bus-bar voltage (DC)
5-time flash
2.5 seconds OFF
6-time flash
2.5 seconds OFF
—
Compressor current
Stop valve (Closed valve)
4-way valve/
Pipe temperature
Overcurrent protection cut-out
operates 3 consecutive times within
1 minute after the compressor gets
started.
Thermistor shorts or opens during
compressor running.
• Reconnect
connectors.
• Refer to 11-5. "How
to check inverter/
compressor".
• Check stop valve.
• Refer to 11-5.
"Check of outdoor
thermistors".
Defective outdoor
thermistors can be
identified by checking
the blinking pattern of
LED.
Large current flows into IGBT module
(IC700).
Compressor current is abnormal.
• Reconnect
compressor connector.
• Refer to 11-5. "How
to check inverter/
compressor".
• Check stop valve.
• Reconnect
compressor connector.
• Refer to 11-5. "How
to check inverter/
compressor".
Temperature of discharge temperature
thermistor exceeds 116°C, compressor
stops.
Compressor can restart if discharge
temperature thermistor reads 100°C or
less 3 minutes later.
Temperature indoor coil thermistor
exceeds 70°C in HEAT mode.
Temperature defrost thermistor
exceeds 70°C in COOL mode.
• Check refrigerant
circuit and refrigerant
amount.
• Refer to 11-5. "Check
of LEV".
Temperature of fin temperature
thermistor on the inverter P.C. board
exceeds 75 ~ 80°C, or temperature of
P.C. board temperature thermistor on
the inverter P.C. board exceeds 70 ~
75°C.
Outdoor fan has stopped 3 times in a
row within 30 seconds after outdoor
fan start-up.
• Check around outdoor
unit.
• Check outdoor unit air
passage.
• Refer to 11-5. "Check
of outdoor fan motor".
• Refer to 11-5. "Check
of outdoor fan motor".
Refer to 11-5. "Check
of inverter P.C. board".
• Replace the inverter
P.C. board.
• Refer to 11-5. "How
to check inverter/
compressor".
Memory data cannot be read.
• Output of IGBT module (IC700) is
short.
• Wiring of compressor is short.
• Check refrigerant
circuit and refrigerant
amount.
• Check stop valve.
Temperature of discharge temperature • Refer to 11-5. "Check
thermistor has been 50°C or less for
of LEV".
20 minutes.
• Check refrigerant
circuit and refrigerant
amount.
8-time flash
2.5 seconds OFF
9-time flash
2.5 seconds OFF
14-time flash
2.5 seconds OFF
Bus-bar voltage cannot be detected
normally.
Compressor current cannot be
detected normally.
Closed valve is detected by
compressor current.
16-time flash
2.5 seconds OFF
The 4-way valve does not work
properly.
The indoor coil thermistor detects an
abnormal temperature.
• Refer to 11-5. "How
to check inverter/
compressor".
—
—
○
○
○
○
○
○
—
○
—
○
—
○
—
○
—
○
—
○
○
○
—
○
—
○
○
○
• Check stop valve
• Check 4-way valve.
• Replace inverter P.C.
board.
NOTE: Blinking patterns of this mode differ from the ones of Troubleshooting check table (11-3.).
OBH635
Indoor/outdoor
Outdoor unit
unit failure
failure mode
mode recall
recall function
function
—
11-time flash
2.5 seconds OFF
—
10-time flash
2.5 seconds
OFF
14-time flash
2.5 seconds
OFF
Remedy
Indoor/outdoor
communication, receiving
error
2-time flash
2.5 seconds
OFF
4-time flash
2.5 seconds
OFF
Condition
25
11-3. TROUBLESHOOTING CHECK TABLE
No.
1
Symptom
Outdoor unit
does not operate.
Abnormal point/
Condition
1-time flash every Outdoor power sys2.5 seconds
tem
LED indication
Condition
Overcurrent protection cut-out operates 3 consecutive times
within 1 minute after the compressor gets started.
Remedy
• Reconnect connector of compressor.
• Refer to 11-5. "How to check inverter/compressor".
• Check stop valve.
2
Outdoor thermistors Discharge temperature thermistor, fin temperature thermistor, • Refer to 11-5.
defrost thermistor, P.C. board temperature thermistor, outdoor thermistors".
heat exchanger temperature thermistor or ambient temperature thermistor shorts or opens during compressor running.
Outdoor control sys- Memory data cannot be read.
tem
(The upper lamp of OPERATION INDICATOR lamp of the indoor unit lights up or flashes 7-time.)
• Replace inverter P.C. board.
3
6-time flash
2.5 seconds OFF
Serial communication
The communication fails between the indoor and outdoor unit
for 3 minutes.
• Check connection between the
inverter P.C. board and relay P.C.
board.
• Refer to 11-5. "How to check miswiring and serial signal error.
5
11-time flash
2.5 seconds OFF
Stop valve/
Closed valve
Closed valve is detected.
• Check stop valve.
6
16-time flash
2.5 seconds OFF
4-way valve/
Pipe temperature
The 4-way valve does not work properly.
The indoor coil thermistor detects an abnormal temperature.
• Refer to 11-5. "Check of R.V.
coil".
• Replace inverter P.C. board.
Overcurrent protection
Large current flows into IGBT module (IC700).
• Reconnect connector of compressor.
• Refer to 11-5. "How to check inverter/compressor".
• Check stop valve.
4
7
'Outdoor unit 2-time flash
stops and
2.5 seconds OFF
restarts 3
minutes later'
is repeated.
8
9
10
11
12
13
3-time flash
2.5 seconds OFF
Discharge tempera- Temperature of discharge temperature thermistor exceeds
• Check refrigerant circuit and refrigture overheat protec- 116°C, compressor stops. Compressor can restart if discharge erant amount.
• Refer to 11-5. "Check of LEV".
tion
temperature thermistor reads 100°C or less 3 minutes later.
4-time flash
2.5 seconds OFF
Fin temperature
/P.C. board temperature thermistor
overheat protection
Temperature of fin temperature thermistor on the heat sink
exceeds 75 ~ 80°C or temperature of P.C. board temperature
thermistor on the inverter P.C.board exceeds 70 ~ 75°C.
• Check around outdoor unit.
• Check outdoor unit air passage.
• Refer to 11-5. "Check of outdoor
fan motor".
5-time flash
2.5 seconds OFF
High pressure protection
Indoor coil thermistor exceeds 70°C in HEAT mode. Defrost
thermistor exceeds 70°C in COOL mode.
• Check refrigerant circuit and refrigerant amount.
• Check stop valve.
8-time flash
2.5 seconds OFF
Compressor synCompressor current is abnormal.
chronous abnormality
• Reconnect connector of compressor.
• Refer to 11-5. "How to check inverter/compressor".
10-time flash
2.5 seconds OFF
Outdoor fan motor
• Refer to 11-5.
fan motor.
• Refer to 11-5.
P.C. board.
12-time flash
2.5 seconds OFF
Compressor current Compressor current cannot be detected normally.
13-time flash
2.5 seconds OFF
Bus-bar voltage
(DC)
Bus-bar voltage cannot be detected normally.
1-time flash
2.5 seconds OFF
Frequency drop by
current protection
Current from power outlet is nearing breaker capacity.
3-time flash
2.5 seconds OFF
Frequency drop by
high pressure protection
Temperature of indoor coil thermistor exceeds 55°C in HEAT
mode, compressor frequency lowers.
Frequency drop by
defrosting in COOL
mode
Indoor coil thermistor reads 8°C or less in COOL mode, compressor frequency lowers.
4-time flash
2.5 seconds OFF
Frequency drop by
discharge temperature protection
Temperature of discharge temperature thermistor exceeds
111°C, compressor frequency lowers.
• Check refrigerant circuit and refrigerant amount.
• Refer to 11-5. "Check of LEV".
• Refer to 11-5. "Check of outdoor
thermistors".
7-time flash
2.5 seconds OFF
Low discharge temperature protection
Temperature of discharge temperature thermistor has been
50°C or less for 20 minutes.
• Refer to 11-5. "Check of LEV".
• Check refrigerant circuit and refrigerant amount.
Outdoor fan has stopped 3 times in a row within 30 seconds
after outdoor fan start-up.
14
15
Outdoor unit
operates.
16
17
18
"Check of outdoor
OBH635
26
"Check of outdoor
"Check of inverter
• Refer to 11-5. "How to check inverter/compressor".
• It occurs with following case.
Instantaneous power voltage drop.
(Short time power failure)
• Refer to 11-5. "Check of power
supply".
• Refer to 11-5. "How to check inverter/compressor".
The unit is normal, but check the
following.
• Check if indoor filters are clogged.
• Check if refrigerant is short.
• Check if indoor/outdoor unit air circulation is short cycled.
No.
8-time flash
2.5 seconds OFF
Abnormal point/
Condition
Condition
Zero cross detecting Zero cross signal cannot be detected.
circuit
9-time flash
2.5 seconds OFF
Inverter check mode The connector of compressor is disconnected, inverter check
mode starts.
Symptom
Outdoor unit
operates.
LED indication
19
20
NOTE: 1. The location of LED is illustrated at the right figure. Refer to 11-6.1.
2. LED is lighted during normal operation.
Remedy
• It occurs with following cases.
1 Instantaneous power voltage
drop. (Short time power failure)
2 Distortion of primary voltage
• Refer to 11-5. "Check of power
supply".
• Check if the connector of the compressor is correctly connected.
Refer to 11-5. "How to check
inverter/compressor".
Inverter P.C. board
The flashing frequency shows the number of times the LED blinks after every 2.5-second OFF.
(Example) When the flashing frequency is “2”.
0.5-second ON
LED
ON
OFF
Flashing
→
0.5-second ON
2.5-second OFF
2.5-second OFF
11-4. TROUBLE CRITERION OF MAIN PARTS
MUZ-GF60VE MUZ-GF71VE
Part name
Defrost thermistor
(RT61)
Check method and criterion
Fin temperature
thermistor (RT64)
Measure the resistance with a tester.
Ambient temperature
thermistor (RT65)
Refer to 11-6. “Test point diagram and voltage”, 1. “Inverter P.C.
board”, for the chart of thermistor.
Figure
Outdoor heat exchanger
temperature thermistor
(RT68)
Discharge temperature
thermistor (RT62)
Measure the resistance with a tester. Before measurement, hold the
thermistor with your hands to warm it up.
Refer to 11-6. “Test point diagram and voltage”, 1. “Inverter P.C.
board”, for the chart of thermistor.
Measure the resistance between terminals using a tester.
(Temperature: -10 ~ 40°C)
U-V
U-W
V-W
R. V. coil (21S4)
RED BLK
Normal (Ω)
Compressor
Outdoor fan motor
WHT
W
MUZ-GF60VE
MUZ-GF71VE
0.78 ~ 1.11
0.83 ~ 1.18
Measure the resistance between lead wires using a tester.
(Temperature: -10 ~ 40°C)
Color of lead wire
Normal (Ω)
RED – BLK
BLK – WHT
12 ~ 17
WHT – RED
V
WHT
U
RED BLK
W
V
U
Measure the resistance using a tester. (Temperature: -10 ~ 40°C)
Normal (kΩ)
1.85 ~ 2.24
Measure the resistance using a tester. (Temperature: -10 ~ 40°C)
OBH635
Normal (Ω)
WHT
LEV
37 ~ 54
27
RED
(+12V)
BLU
ORN
YLW
Expansion valve coil
(LEV)
Color of lead wire
RED – ORN
RED – WHT
RED – BLU
RED – YLW
11-5. TROUBLESHOOTING FLOW
A How to check inverter/compressor
Disconnect the connector between
compressor and the IGBT module (IC700).
See 11-5.
Check the voltage between terminals.
Are the voltages balanced?
Yes
No
Replace the inverter P.C. board.
See 11-5.
Check the compressor.
“Check of open phase”.
“Check of compressor”.
B Check of open phase
● With the connector between the compressor and the IGBT module (IC700) disconnected, activate the inverter and check if
the inverter is normal by measuring the balance of voltage between the terminals.
Output voltage is 50 - 130 V. (The voltage may differ according to the tester.)
<< Operation method>>
Start cooling or heating operation by pressing EMERGENCY OPERATION switch on the indoor unit. (TEST RUN OPERATION: Refer to 8-3.)
<<Measurement point>>
At 3 points
BLK (U)-WHT (V)
Measure AC voltage between the lead wires at 3 points.
BLK (U)-RED (W)
WHT(V)-RED (W)
NOTE: 1. Output voltage varies according to power supply voltage.
2. Measure the voltage by analog type tester.
3. During this check, LED of the inverter P.C. board flashes 9 times. (Refer to 11-6.1.)
C Check of compressor
Refer to 11-5. “Check of compressor
winding”.
Is the compressor normal?
Yes
Refer to 11-5. “Check of compressor
operation time”.
Does the compressor operate continuously?
Yes
No
No
Replace the compressor.
Refer to 11-5.
OK.
OBH635
28
“Check of compressor start failure”.
D Check of compressor winding
●Disconnect the connector between the compressor and the IGBT module (IC700), and measure the resistance between the
compressor terminals.
<<Measurement point>>
At 3 points
BLK-WHT
Measure the resistance between the lead wires at 3 points.
BLK-RED
WHT-RED
<<Judgement>>
Refer to 11-4.
0 [Ω] ················Abnormal [short]
Infinite [Ω] ·······Abnormal [open]
NOTE: Be sure to zero the ohmmeter before measurement.
E Check of compressor operation time
<<Judgement>>
● Connect the compressor and activate the inverter. Then measure
the time until the inverter stops due to over current.
<<Operation method>>
Start heating or cooling operation by pressing EMERGENCY
OPERATION switch on the indoor unit. (TEST RUN OPERATION:
Refer to 8-3.)
<<Measurement>>
Measure the time from the start of compressor to the stop of
compressor due to overcurrent.
0 second
Compressor starts
1 second
Abnormal
(IPM failure)
(Compressor winding short)
2 seconds
Abnormal
(Compressor lock out)
(Starting defect)
10 seconds
Abnormal
(Poor contact,)
(Outdoor P.C. board defect)
(Disconnected connector)
Abnormal
(Refrigerant circuit defect)
(Closed valve)
10 minutes
Normal
F Check of compressor start failure
Make sure that ~ is normal.
•Electrical circuit check
. Contact of the compressor connector
. Output voltage of inverter P.C. board and balance of them (See 11-5. )
. Direct current voltage between JP715(+) and JP30(-) on the inverter P.C.
board
. Voltage between outdoor terminal block S1-S2
Does the compressor run for 10 seconds or
more after it starts?
Yes
Check the refrigerant circuit.
Check the stop valve.
No
After the compressor is heated with a drier,
does the compressor start? 1
No
Replace the compressor.
Yes
1
Heat the compressor with
a drier for about 20 minutes.
Do not recover refrigerant
gas while heating.
Compressor start failure. Activate pre-heat control.
(Refer to 10-2. "PRE-HEAT CONTROL SETTING")
Heating part
OBH635
29
G Check of outdoor thermistors
Disconnect the connector of thermistor in the outdoor P.C. board (see
below table), and measure the resistance of thermistor.
Is the resistance of thermistor normal?
(Refer to 11-6.1.)
Yes
No
Replace the thermistor except RT64.
When RT64 is abnormal, replace the inverter P.C.
board.
Reconnect the connector of thermistor.
Turn ON the power supply and press EMERGENCY OPERATION switch.
Does the unit operate for 10 minutes or more
without showing thermistor abnormality?
No
Replace the inverter P.C. board.
Yes
OK.
(Cause is poor contact.)
Thermistor
Symbol
Connector, Pin No.
Defrost
RT61 Between CN671 pin1 and pin2
Discharge temperature
RT62 Between CN671 pin3 and pin4
Fin temperature
RT64 Between CN673 pin1 and pin2
Ambient temperature
RT65 Between CN672 pin1 and pin2
Outdoor heat exchanger temperature RT68 Between CN671 pin5 and pin6
Board
Inverter P.C. board
H Check of R.V. coil
First of all, measure the resistance of R.V. coil to check if the coil is defective. Refer to 11-4.
In case CN602 is disconnected or R.V. coil is open, voltage is generated between the terminal pins of the connector
although no signal is being transmitted to R.V. coil.
Check if CN602 is connected.
Unit operates COOL mode even if it is set to HEAT mode.
Disconnect connector between the
compressor and the IGBT module
(IC700).
Turn ON the power supply and press
EMERGENCY OPERATION switch
twice (HEAT mode).
Is there 230 VAC between CN602 and
on the inverter P.C. board 3 minutes
after the power supply is turned ON?
No
Replace the inverter
P.C. board.
Yes
Replace the 4-way valve.
Unit operates HEAT mode even if it is set to COOL mode.
Disconnect connector between the
compressor and the IGBT module
(IC700).
Turn ON the power supply and
press EMERGENCY OPERATION
switch once (COOL mode).
Is there 230 VAC between CN602 and
on the inverter P.C. board 3 minutes
after the power supply is turned ON?
No
Replace the 4-way valve.
OBH635
30
Replace the inverter
Yes P.C. board.
I Check of outdoor fan motor
Disconnect the connectors CN931
and CN932 from the inverter P.C.
board.
Check the connection between the
connector CN931 and CN932.
Is the resistance between each terminal of outdoor fan motor normal?
(Refer to 11-4.)
No
Yes
Disconnect CN932 from the inverter P.C. board, and turn on the
power supply.
Rotate the outdoor fan motor manually and measure the voltage
of CN931.
Between 1(+) and 5(-)
Between 2(+) and 5(-)
Between 3(+) and 5(-)
(Fixed to either 5 or 0 VDC)
No
No
Does the voltage between each terminal become 5 and 0
VDC repeatedly?
Yes
Does the outdoor fan motor rotate smoothly?
Yes
Replace the inverter P.C. board.
Replace the outdoor fan motor.
OBH635
31
J Check of power supply
Disconnect the connector between
the compressor and the IGBT
module (IC700).
Turn ON the power supply and
press EMERGENCY OPERATION
switch.
Does the upper lamp of
OPERATION INDICATOR on the
indoor unit light up?
Yes
Is there bus-bar voltage 325 - 370
VDC between JP715 (+) and JP30
(–) on the inverter P.C. board?
(Refer to 11-6.1.)
No
Check the electric parts in main circuit.
Rectify indoor/outdoor
connecting wire.
No
Yes
Yes
Is there voltage 230 VAC
between the indoor terminal
block S1 and S2?
Does LED on the inverter P.C.
board light up or flash? (Refer
to 11-6.1.)
Yes
No
No
Replace the indoor
electronic control P.C.
board.
Replace the inverter
P.C. board.
If light up, OK.
If flash, refer to 11-3.
JP30
JP715
325 -370 VDC
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K Check of LEV (Expansion valve)
Turn ON the power supply.
<Preparation of the remote controller>
While pressing both OPERATION SELECT button
and TEMP button on the remote controller at the
same time, press RESET button.
First, release RESET button.
Hold down the other two buttons for another 3 seconds. Make sure that the indicators on the LCD screen
shown in the right figure are all displayed.
Then release the buttons.
Press OPERATE/STOP (ON/OFF) button of the remote
controller (the set temperature is displayed) with the
remote controller headed towards the indoor unit. 1
Expansion valve operates in full-opening direction.
Do you hear the expansion valve "click,
click·······"?
Do you feel the expansion valve vibrate
on touching it ?
No
Is LEV coil properly fixed to
the expansion valve?
No
Yes
Does the resistance of LEV
coil have the characteristics? Yes
(Refer to 11-4.)
No
Replace the LEV coil.
1. Regardless of normal or abnormal condition, a short beep
is emitted once the signal is received.
Yes
OK
Properly fix the LEV coil to the expansion valve.
Measure each voltage between connector
pins of CN724 on the inverter P.C. board.
1. Pin (-) — Pin (+)
2. Pin (-) — Pin (+)
3. Pin (-) — Pin (+)
4. Pin (-) — Pin (+)
Is there about 3 - 5 VAC between each?
NOTE: Measure the voltage by an analog
tester.
Yes
Replace the expansion valve.
NOTE: After check of LEV, do the undermentioned operations.
1. Turn OFF the power supply and turn it ON again.
2. Press RESET button on the remote controller.
OBH635
33
No
Replace the inverter P.C.
board.
L Check of inverter P.C. board
Check the outdoor fan motor.
(Refer to 11-5. .)
Is the fuse (F901) blown on the inverter P.C. board?
Yes
No
Check the connection of the connectors
(CN931, CN932) of the outdoor fan motor.
If the connection is poor, make it correct.
Operate the outdoor unit by starting
EMERGENCY OPERATION.
Check the LED indication on the
inverter P.C. board.
Does the LED flash 10 times?
No
Check the corresponding parts
following LED indication.
(Refer to 11-3.)
Yes
(10-time flash)
Replace the inverter P.C. board.
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M How to check miswiring and serial signal error
Turn the power supply OFF.
NOTE: Refer to the indoor unit service manual.
Check the power supply.
Is there rated voltage in the power supply?
No
Yes
Check for incorrect indoor-outdoor connecting wiring.
Yes
A
Was the indoor unit ever connected to the Multi
(MXZ) series and operated (turned on)?
• Turn OFF inverter-controlled lighting equipment.
• Turn OFF the power supply and then turn ON again.
• Press EMERGENCY OPERATION switch.
No
The connection information to the Multi series is
stored in the indoor unit. Refer to “Deleting the
memorized abnormal condition” described in 11-2.1
to clear the error history. When the error history is
being cleared, the connection information also will
be initialized. The indoor unit will be compatible with
a low-standby-power model after initialization.
OK
Is serial signal
error indicated 6
minutes later?
Yes
A
B
B
Turn the power supply ON.
Is there rated voltage between outdoor terminal block S1 and S2?
Yes
Wait for 2 or more minutes after the power supply is turned on.
Touch S2 and S3 with tester probes and start the emergency operation.
When the emergency operation starts, does the rated voltage occur for 2 seconds between indoor terminal block S2 and S3?
Yes
Does the indoor OPERATION
INDICATOR lamp (upper) blink
continuously 6 minutes after the
emergency operation starts?
Yes
No
Does DC (10 V or more) occur
between L68A and L68B on the
relay P.C. board?
No
Yes
No
Replace the inverter P.C. board
and the relay P.C. board. 1
Yes
Does DC (more than 0 V) occur
between indoor terminal block S2
and S3?
Yes
No
Replace the inverter P.C. board. 1
1.
Electric charge may remain immediately
after the power supply is turned OFF.
Perform the procedure after 3 minutes.
Turn the power supply OFF.
Replace the indoor electronic
control P.C. board.
Turn the power supply ON.
Start the emergency operation.
Does the indoor OPERATION
INDICATOR lamp (upper) blink
continuously 6 minutes after the
emergency operation starts?
Yes
No
Repair has been completed.
Replace the inverter P.C. board
and the relay P.C. board. 1
OBH635
35
No
Check for miswiring, broken wires, and loose wire
connection between the power supply and outdoor
terminal block S1 and between the power supply and
outdoor terminal block S2.
No
Replace the relay P.C. board. 1
Does the outdoor LED blink 6
times?
No
• Reinstall either the unit or the light
away from each other.
• Attach a filter on remote control
receiving section of the indoor unit.
Replace the inverter P.C. board
and the relay P.C. board. 1
Replace the indoor electronic
control P.C. board.
N Electromagnetic noise enters into TV sets or radios
Is the unit earthed?
Yes
Is the distance between the antennas
and the indoor unit within 3 m, or is the
distance between the antennas and the
outdoor unit within 3 m?
No
Earth the unit.
No
Yes
Extend the distance between the antennas and
the indoor unit, and/or the antennas and the
outdoor unit.
Is the distance between the TV sets or
radios and the indoor unit within 1 m, or
is the distance between the TV sets or
radios and the outdoor unit within 3 m?
No
Yes
Extend the distance between the TV sets and/or
radios and the indoor unit, or the TV sets or
radios and the outdoor unit.
Are the antennas damaged?
Is the coaxial cable damaged?
Is there any poor contact in the antenna wiring?
No
Yes
Replace or repair the antenna.
Replace or repair the coaxial cable.
Yes
Extend the distance between the indoor/outdoor
connecting wire of the air conditioner and the wiring of the antennas.
Is the indoor/outdoor connecting wire
of the air conditioner and the wiring of
the antennas close?
No
Even if all of the above conditions are fulfilled, the electromagnetic noise may enter, depending on the electric field strength
or the installation condition (combination of specific conditions such as antennas or wiring).
Check the following before asking for service.
1. Devices affected by the electromagnetic noise
TV sets, radios (FM/AM broadcast, shortwave)
2. Channel, frequency, broadcast station affected by the electromagnetic noise
3. Channel, frequency, broadcast station unaffected by the electromagnetic noise
4. Layout of:
indoor/outdoor unit of the air conditioner, indoor/outdoor wiring, earth wire, antennas, wiring from antennas, receiver
5. Electric field intensity of the broadcast station affected by the electromagnetic noise
6. Presence or absence of amplifier such as booster
7. Operation condition of air conditioner when the electromagnetic noise enters in
1) Turn OFF the power supply once, and then turn ON the power supply. In this situation, check for the electromagnetic
noise.
2) Within 3 minutes after turning ON the power supply, press OPERATE/STOP (ON/OFF) button on the remote controller
for power ON, and check for the electromagnetic noise.
3) After a short time (3 minutes later after turning ON), the outdoor unit starts running. During operation, check for the
electromagnetic noise.
4) Press OPERATE/STOP (ON/OFF) button on the remote controller for power OFF, when the outdoor unit stops but the
indoor/outdoor communication still runs on. In this situation, check for the electromagnetic noise.
OBH635
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11-6. TEST POINT DIAGRAM AND VOLTAGE
1. Inverter P.C. board
MUZ-GF60VE MUZ-GF71VE
Fuse (F601)
T3.15AL250V
R.V. coil (CN602)
230VAC
Heater (CN601)
230VAC
Signal of outdoor fan motor
(CN931)
LEV connector (CN724)
Output to
drive outdoor
fan motor
(CN932)
LED
Defrost thermistor
/RT61 (CN671)
Discharge temperature
thermistor/RT62
(CN671)
Outdoor heat exchanger
temperature thermistor
/RT68 (CN671)
Ambient temperature
thermistor/RT65
(CN672)
Fin temperature
thermistor/RT64
(CN673)
Jumper wire for
changing defrost
setting (JS)
Fuse (F901)
T3.15AL250V
Fuse (F880)
T3.15AL250V
Jumper wire for
pre-heat control
setting (JK)
JP715 (+)
325 - 370 VDC
JP30 (-)
100
To relay P.C. board CN680
(CN681)
Defrost thermistor(RT61)
Ambient temperature thermistor(RT65)
Outdoor heat exchanger temperature thermistor(RT68)
200
180
90
700
60
600
50
40
30
20
10
0
10 20 30
Temperature( )
OBH635
40
140
500
400
300
120
100
80
60
200
40
100
20
0
-10
160
Discharge temperature thermistor(RT62)
Resistance(k )
70
Resistance(k )
Resistance(k )
80
0
-20
Fin temperature thermistor(RT64)
0
10
20
30
40
50
60
70
80
Temperature( )
37
90 100 110 120
0
0
10 20 30 40 50 60 70 80
Temperature( )
2. Relay P.C. board
MUZ-GF60VE MUZ-GF71VE
CN60
To inverter P.C. board
CN681 (CN680)
L68B(-)
10 VDC
L68A(+)
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12
DISASSEMBLY INSTRUCTIONS
<"Terminal with locking mechanism" Detaching points>
The terminal which has the locking mechanism can be detached as shown below.
There are two types (refer to (1) and (2)) of the terminal with locking mechanism.
The terminal without locking mechanism can be detached by pulling it out.
Check the shape of the terminal before detaching.
(1) Slide the sleeve and check if there is a locking lever or not.
Sleeve
Locking lever
Slide the sleeve.
Pull the terminal while
pushing the locking
lever.
(2) The terminal with this connector has the
locking mechanism.
Hold the sleeve, and
pull out the terminal
slowly.
Connector
12-1. MUZ-GF60VE MUZ-GF71VE
NOTE: Turn OFF power supply before disassembly.
OPERATING PROCEDURE
PHOTOS
1. Removing the cabinet
Photo 1
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Remove the screws of the service panel.
Remove the screws of the top panel.
Remove the screw of the valve cover.
Remove the service panel.
Remove the top panel.
Remove the valve cover.
Disconnect the power supply and indoor/outdoor connecting wire.
(8) Remove the screws of the cabinet.
(9) Remove the cabinet.
(10) Remove the screws of the back panel.
(11) Remove the back panel.
Screws of the top panel
Photo 2
Screw of the back panel
Screws of the top panel
Screws of the
cabinet
Screws of the
cabinet
Screws of
the cabinet
Screw of the
valve cover
OBH635
Screws of the Screws of the
service panel back panel
39
Screws of the
cabinet
OPERATING PROCEDURE
PHOTOS
2. Removing the inverter assembly, inverter P.C. board
and relay P.C. board
Photo 3
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the lead wire to the reactor and the following conInverter P.C
nectors:
board
<Inverter P.C. board>
CN602 (R.V. coil)
CN931, CN932 (Fan motor)
CN671 (Defrost thermistor, discharge temperature thermistor
and outdoor heat exchanger temperature thermistor)
CN672 (Ambient temperature thermistor)
CN724 (LEV)
(3) Remove the compressor connector.
(4) Remove the screws fixing the relay panel.
(5) Remove the relay panel.
(6) Remove the earth wires and the lead wires of the inverter P.C.
board.
(7) Remove the screws of the PB support.
Screws of
(8) Remove the inverter P.C. board from the relay panel.
the P.B.
(9) Disconnect the following connectors:
support
<Relay P.C. board>
CN60 (Terminal block)
CN680 (Inverter P.C. board)
TAB65 (Inverter P.C. board)
TB71
(10) Remove the screws fixing the P.B. holder.
Screw of the
(11) Remove the relay P.C. board from the P.B. holder.
relay panel
Earth wires
Screws of the
relay panel
Screw of
Screws of Relay
the P.B.
P.C board the P.B.
holder
support
Photo 4
Screw of the
R.V. coil
3. Removing R.V. coil
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the following connector:
<Inverter P.C. board>
CN602 (R.V. coil)
(3) Remove the R.V. coil.
Brazed parts of
4-way valve
OBH635
40
OPERATING PROCEDURE
PHOTOS
4. Removing the discharge temperature thermistor,
defrost thermistor, outdoor heat exchanger temperature thermistor and ambient temperature thermistor
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the lead wire to the reactor and the following
connectors:
<Inverter P.C. board>
CN671 (Defrost thermistor, discharge temperature thermistor and outdoor heart exchanger temperature thermistor)
CN672 (Ambient temperature thermistor)
(3) Pull out the discharge temperature thermistor from its holder. (Photo 7)
(4) Pull out the defrost thermistor from its holder.
(5) Pull out the outdoor heat exchanger temperature thermistor
from its holder.
(6) Pull out the ambient temperature thermistor from its holder.
Photo 5
Ambient
temperature
thermistor
Outdoor heat
exchanger
temperature thermistor
5. Removing outdoor fan motor
(1) Remove the top panel, cabinet and service panel. (Refer to 1.)
(2) Disconnect the following connectors:
<Inverter P.C. board>
CN931 and CN932 (Fan motor)
Defrost thermistor
Photo 6
(3) Remove the propeller.
(4) Remove the screws fixing the fan motor.
(5) Remove the fan motor.
6. Removing the compressor and 4-way valve
Photo 7
Screws of the
outdoor fan motor
Brazed part of the
discharge pipe
(1) Remove the top panel, cabinet and service panel. (Refer to 1.)
(2) Remove the back panel. (Refer to 1.)
(3) Remove the inverter assembly. (Refer to 2.)
(4) Recover gas from the refrigerant circuit.
NOTE: Recover gas from the pipes until the pressure gauge
shows 0 kg/cm2 (0 MPa).
(5) Detach the brazed part of the suction and the discharge
pipe connected with compressor.
(6) Remove the compressor nuts.
(7) Remove the compressor.
(8) Detach the brazed parts of 4-way valve and pipe. (Photo 4)
Brazed part of the
suction pipe
OBH635
41
Discharge temperature
thermistor
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
© Copyright 2013 MITSUBISHI ELECTRIC CORPORATION
Distributed in Mar. 2013. No. OBH635
Made in Japan
New publication, effective Mar. 2013
Specifications are subject to change without notice.