Mitsubishi Electric MUZ-GF60VE User manual

SERVICE MANUAL
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
Models
SPLIT-TYPE AIR CONDITIONERS
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
HFC
utilized
R410A
No. OBH635
OUTDOOR UNIT
PARTS CATALOG (OBB635)
MUZ-GF60VE -E1
MUZ-GF71VE -E1
Indoor unit service manual
MSZ-GF•VE Series (OBH634)

2
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

3
MUZ-GF60VE - E1
MUZ-GF71VE - E1
1. New model
TECHNICAL CHANGES
1
OBH635

4
PART NAMES AND FUNCTIONS
2
ACCESSORIES
Model MUZ-GF60/71VE
Drain socket 1
MUZ-GF60VE MUZ-GF71VE
Piping
Air outlet
Drain outlet
Air inlet
(back and side)
Drain hose
OBH635

5
SPECIFICATION
3
Outdoor model MUZ-GF60VE MUZ-GF71VE
Power supply Single phase, 230 V, 50 Hz
Capacity
Rated frequency (Min. - Max.)
Cooling kW 6.1 (1.4 - 7.5) 7.1 (2.0 - 8.7)
Heating 6.8 (2.0 - 9.3) 8.1 (2.2 - 9.9)
Breaker Capacity A 20
Electrical data
Power input 1 (Total) Cooling W1,790 2,130
Heating 1,810 2,230
Running current 1
(Total) Cooling A7.9 9.3
Heating 8.0 9.8
Power factor 1 (Total) Cooling %98 99
Heating 98 99
Starting current 1 (Total) A 8.0 9.8
Coefficient of performance
(COP) 1 (Total) Cooling 3.41 3.33
Heating 3.76 3.63
Compressor
Model SNB130FGBMT SNB172FEKMT
Output W 900 1,200
Current 1Cooling A6.58 8.00
Heating 6.54 8.47
Refrigeration oil (Model) L 0.35(FV50S) 0.40(FV50S)
Fan motor Model RC0J60-BC
Current 1 Cooling A0.93 0.83
Heating 0.93 0.82
Dimensions W × H × D mm 840 × 880 × 330
Weight kg 50 53
Special remarks
Dehumidification Cooling L/h 1.9 2.3
Air flow 1
Cooling High
m3/h
3,492 3,426
Med. 3,066 3,006
Low 1,692 1,512
Heating High 2,952 2,892
Med. 2,952 2,892
Low 2,226 2,280
Sound level 1 Cooling dB(A) 55
Heating 55
Fan speed
Cooling High
rpm
950
Med. 840
Low 480 450
Heating High 810 Med. 810
Low 620 650
Fan speed regulator 3
Refrigerant filling capacity (R410A) kg 1.55 1.90
NOTE: Test conditions are based on ISO 5151.
Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C
Outdoor Dry-bulb temperature 35°C
Heating: Indoor Dry-bulb temperature 20°C
Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C
Refrigerant piping length (one way): 5 m
1 Measured under rated operating frequency.
OBH635

6
Specifications and rated conditions of main electric parts
Model
Item MUZ-GF60VE MUZ-GF71VE
Smoothing
capacitor (CB1, CB2, CB3) 560 μF 450 V
Fuse (F601, F880, F901) T3.15AL250 V
IGBT module (IC932) 5 A 600 V
(IC700) 20 A 600 V
Expansion valve coil (LEV) 12 V DC
Reactor (L) 340 μH
Diode module (IC820) 20 A 600 V
Circuit protection (PTC64, PTC65) 33 Ω
Terminal block (TB1, TB2) 3 P
Relay
(X64) 20 A 250 V
(X65) 20 A 250 V
(X69) 10 A 250 V
(X601) 3 A 250 V
(X602) 3 A 250 V
R.V. coil (21S4) 220 - 240 V AC
OBH635

7
NOISE CRITERIA CURVES
4
MUZ-GF60VE MUZ-GF71VE
Test conditions
Cooling: Dry-bulb temperature 35°C
Heating: Dry-bulb temperature 7°C Wet-bulb temperature 6°C
OUTDOOR UNIT
MICROPHONE
1 m
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
FUNCTION SPL(dB(A)) LINE
HEATING
55
NC-10
55
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
FUNCTION SPL(dB(A)) LINE
HEATING
55
NC-10
55
OBH635

8
Unit: mm
OUTLINES AND DIMENSIONS
5
MUZ-GF60VE MUZ-GF71VE
417.5
40
42
Drain hole
175 500
330
50
Air in
Air out 2-holes 10 21
360
840
109 81
880
452
Service panel
99.5
164.5
195
35
44
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) Ø6.35 (MUZ-GF60VE)
Ø9.52 (MUZ-GF71VE)
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) Ø15.88
350 mm or more
100 mm or more
REQUIRED SPACE
500 mm or more
100 mm or more
500 mm or more
OBH635

9
WIRING DIAGRAM
6
MUZ-GF60VE MUZ-GF71VE
OBH635

10
REFRIGERANT SYSTEM DIAGRAM
7
MUZ-GF60VE Unit: mm
Outdoor
heat
exchanger
Flared connection
Defrost
thermistor
RT61
Discharge
temperature
thermistor
RT62
Flared connection
Stop valve
Stop valve
(with service port)
Capillary tube
ø 4.0 × ø 2.4 × 100 Refrigerant flow in cooling
Compressor
4-way valve
Refrigerant flow in heating
Refrigerant pipe
ø 15.88
(with heat insulator)
Refrigerant pipe ø 6.35
(with heat insulator)
LEV R.V. coil
heating ON
cooling OFF
Muffler
#100
Strainer
#100
Outdoor heat
exchanger
temperature
thermistor
RT68
Ambient
temperature
thermistor
RT65
Strainer
#100
MUZ-GF71VE
Outdoor
heat
exchanger
Flared connection
Defrost
thermistor
RT61
Discharge
temperature
thermistor
RT62
Flared connection
Stop valve
Stop valve
(with service port)
Capillary tube
ø 4.0 × ø 2.4 × 100 Refrigerant flow in cooling
Compressor
4-way valve
Refrigerant flow in heating
Refrigerant pipe
ø 15.88
(with heat insulator)
Refrigerant pipe ø 9.52
(with heat insulator)
LEV R.V. coil
heating ON
cooling OFF
Muffler
#100
Strainer
#100
Outdoor heat
exchanger
temperature
thermistor
RT68
Ambient
temperature
thermistor
RT65
Strainer
#100
OBH635