Mitsubishi Electric MXZ-3E54VA User manual

HFC
utilized
R410A
SERVICE MANUAL No. OBH723
REVISED EDITION-C
OUTDOOR UNIT
NOTE:
RoHS compliant products have <G> mark
on the spec name plate.
PARTS CATALOG (OBB723)
Models
MXZ-3E54VA -E1 , ET1 , ER1
MXZ-3E68VA -E1 , ET1 , ER1
MXZ-4E72VA -E1 , ET1 , ER1
MXZ-4E83VA -E1 , E2 , ET1 , ET2 , ER1
MXZ-5E102VA -E1 , E2 , ET1 , ET2 , ER1
MXZ-2E53VAHZ -E1 , ER1
MXZ-4E83VAHZ -E1 , ER1
Indoor unit service manual
MSZ-EF•VE Series (OBH589)
MSZ-SF•VA Series (OBH555)
MSZ-SF•VE Series (OBH600)
MSZ-FD•VA Series (OBH488)
MSZ-FH•VE Series (OBH623)
MSZ-GA•VA Series (OB378)
MSZ-GE•VA Series (OBH515)
MSZ-GF•VE Series (OBH634)
MFZ-KA•VA Series (OB409)
MFZ-KJ•VE Series (OBH666)
MLZ-KA•VA Series (OBH483)
SLZ-KA•VA Series (OC320)
SEZ-KD•VA Series (HWE07110)
PLA-RP•BA Series (OCH412)
PCA-RP•KA Series (OCH454)
PEAD-RP•JA Series (HWE08130)
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS····················· 4
3. SPECIFICATION················································ 5
4. NOISE CRITERIA CURVES···························· 12
5. OUTLINES AND DIMENSIONS ······················ 14
6. WIRING DIAGRAM·········································· 20
7. REFRIGERANT SYSTEM DIAGRAM············· 36
8. PERFORMANCE CURVES····························· 44
9. ACTUATOR CONTROL··································· 73
10. SERVICE FUNCTIONS···································· 74
11. TROUBLESHOOTING····································· 77
12. DISASSEMBLY INSTRUCTIONS···················· 97
INDOOR UNITS COMBINATION SHEETS
MXZ-4E83VA
MXZ-5E102VA
MXZ-2E53VAHZ
Please void OBH723 REVISED EDITION-B.
Revision C:
• MXZ-3E54VA- ER1 , MXZ-3E68VA- ER1 , MXZ-
4E72VA- ER1 , MXZ-4E83VA- E2 , ET2 , ER1 ,
MXZ-5E102VA- E2 , ET2 , ER1 , MXZ-2E53VAHZ-
ER1 and MXZ-4E83VAHZ- ER1 have been added.

2
<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.
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.
Revision A:
• MXZ-2E53VAHZ- E1 and MXZ-4E83VAHZ- E1 have been added.
• Values of air flow and fan speed for MXZ-5E102VA- E1 , ET1 have been modified.
Revision B:
• MXZ-3E54VA- E1 , ET1 , MXZ-3E68VA- E1 , ET1 , and MXZ-4E72VA- E1 , ET1 have been added.
Revision C:
• MXZ-3E54VA- ER1 , MXZ-3E68VA- ER1 , MXZ-4E72VA- ER1 , MXZ-4E83VA- E2 , ET2 , ER1 , MXZ-5E102VA- E2 , ET2 , ER1 ,
MXZ-2E53VAHZ- ER1 and MXZ-4E83VAHZ- ER1 have been added.
OBH723C

3
TECHNICAL CHANGES
1
MXZ-4E83VA - E1 , ET1 , ER1
MXZ-5E102VA - E1 , ET1 , ER1
1. New model
MXZ-2E53VAHZ - E1 , ER1
1. New model
MXZ-4E83VAHZ - E1 , ER1
1. New model
MXZ-3E54VA - E1 , ET1 , ER1
MXZ-3E68VA - E1 , ET1 , ER1
MXZ-4E72VA - E1 , ET1 , ER1
1. New model
MXZ-4E83VA - E1 , ET1 MXZ-4E83VA - E2 , ET2
1. Fan motor has been changed.
2. Outdoor control P.C. board has been changed.
MXZ-5E102VA - E1 , ET1 MXZ-5E102VA - E2 , ET2
1. Fan motor has been changed.
2. Outdoor control P.C. board has been changed.
OBH723C

4
PART NAMES AND FUNCTIONS
2
MXZ-4E83VA
MXZ-5E102VA
MXZ-2E53VAHZ
Air outlet
Drain outlet
Air inlet
(Back and side)
ACCESSORIES
Model MXZ-3E54VA MXZ-3E68VA
MXZ-4E72VA
MXZ-4E83VA
MXZ-5E102VA
Drain socket 1 1
Drain cap 2 5
Air outlet
Drain outlet
Air inlet
(Back and side)
MXZ-4E83VAHZ
Air outlet
Drain outlet
Air inlet
(Back and side)
MXZ-3E54VA
MXZ-3E68VA
MXZ-4E72VA
OBH723C

5
SPECIFICATION
3
Outdoor model MXZ-3E54VA
Outdoor unit power supply Single phase
230 V, 50 Hz
System
Indoor units number 2 to 3
Piping total length m Max. 50
Connecting pipe length m Max. 25
Height difference (Indoor ~ Outdoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Height difference (Indoor ~ Indoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Function Cooling Heating
Capacity Rated frequency (Min.-Max.) 2 kW 5.4 (2.9 - 6.8) 7.0 (2.6 - 9.0)
Breaker capacity A 25
Electrical
data
Power input (Total) 1, 2 W 1,350 1,590
Running current (Total) 1, 2 A 5.9 7.0
Power factor (Total) 1, 2% 99
Starting current (Total) 1, 2 A 7.0
Coefficient of performance (C.O.P) (Total) 1, 2 4.00 4.40
Compressor
Model SNB130FGBH1T
Output W 1,400
Current 1, 2 A 5.72 6.62
Refrigeration oil (Model) L 0.7 (NEO22)
Fan motor
Model SIC-71FW-F764-2
Current 1, 2 A 0.2
Dimensions W x H x D mm 840 x 710 x 330
Weight kg 58
Special
remarks
Air flow (Rated) m3/h 2,334 2,376
Sound level (Rated) dB(A) 50 53
Fan speed (Rated) rpm 650 660
Refrigerant filling capacity (R410A) kg 2.7
1 Measured under rated operating frequency.
2 When connected with indoor units below.
MSZ-EF18VE + MSZ-EF18VE + MSZ-EF18VE
NOTE: Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
COOLING INDOOR Dry-bulb temperature 27.0 °C Wet-bulb temperature 19.0 °C
OUTDOOR Dry-bulb temperature 35.0 °C Wet-bulb temperature 24.0 °C
HEATING INDOOR Dry-bulb temperature 20.0 °C
OUTDOOR Dry-bulb temperature 7.0 °C Wet-bulb temperature 6.0 °C
OBH723C

6
Outdoor model MXZ-3E68VA
Outdoor unit power supply Single phase
230 V, 50 Hz
System
Indoor units number 2 to 3
Piping total length m Max. 60
Connecting pipe length m Max. 25
Height difference (Indoor ~ Outdoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Height difference (Indoor ~ Indoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Function Cooling Heating
Capacity Rated frequency (Min.-Max.) 2 kW 6.8 (2.9 - 8.4) 8.6 (2.6 - 10.6)
Breaker capacity A 25
Electrical
data
Power input (Total) 1, 2 W 2,190 2,380
Running current (Total) 1, 2 A 9.6 10.5
Power factor (Total) 1, 2% 99
Starting current (Total) 1, 2 A 10.5
Coefficient of performance (C.O.P) (Total) 1, 2 3.11 3.61
Compressor
Model SNB172FEGH1T
Output W 1,800
Current 1, 2 A 9.22 10.12
Refrigeration oil (Model) L 0.7 (NEO22)
Fan motor
Model SIC-71FW-F764-2
Current 1, 2 A 0.2
Dimensions W x H x D mm 840 x 710 x 330
Weight kg 58
Special
remarks
Air flow (Rated) m3/h 2,334 2,376
Sound level (Rated) dB(A) 50 53
Fan speed (Rated) rpm 650 660
Refrigerant filling capacity (R410A) kg 2.7
1 Measured under rated operating frequency.
2 When connected with indoor units below.
MSZ-EF18VE + MSZ-EF25VE + MSZ-EF25VE
NOTE: Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
COOLING INDOOR Dry-bulb temperature 27.0 °C Wet-bulb temperature 19.0 °C
OUTDOOR Dry-bulb temperature 35.0 °C Wet-bulb temperature 24.0 °C
HEATING INDOOR Dry-bulb temperature 20.0 °C
OUTDOOR Dry-bulb temperature 7.0 °C Wet-bulb temperature 6.0 °C
OBH723C

7
Outdoor model MXZ-4E72VA
Outdoor unit power supply Single phase
230 V, 50 Hz
System
Indoor units number 2 to 4
Piping total length m Max. 60
Connecting pipe length m Max. 25
Height difference (Indoor ~ Outdoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Height difference (Indoor ~ Indoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Function Cooling Heating
Capacity Rated frequency (Min.-Max.) 2 kW 7.2 (3.7 - 8.8) 8.6 (3.4 - 10.7)
Breaker capacity A 25
Electrical
data
Power input (Total) 1, 2 W 2,250 2,280
Running current (Total) 1, 2 A 9.9 10.0
Power factor (Total) 1, 2% 99
Starting current (Total) 1, 2 A 10.0
Coefficient of performance (C.O.P) (Total) 1, 2 3.20 3.77
Compressor
Model SNB172FEGH1T
Output W 2,000
Current 1, 2 A 9.46 9.56
Refrigeration oil (Model) L 0.7 (NEO22)
Fan motor
Model SIC-71FW-F764-2
Current 1, 2 A 0.2
Dimensions W x H x D mm 840 x 710 x 330
Weight kg 59
Special
remarks
Air flow (Rated) m3/h 2,334 2,376
Sound level (Rated) dB(A) 50 53
Fan speed (Rated) rpm 650 660
Refrigerant filling capacity (R410A) kg 2.7
1 Measured under rated operating frequency.
2 When connected with indoor units below.
MSZ-EF18VE + MSZ-EF18VE + MSZ-EF18VE + MSZ-EF18VE
NOTE: Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
COOLING INDOOR Dry-bulb temperature 27.0 °C Wet-bulb temperature 19.0 °C
OUTDOOR Dry-bulb temperature 35.0 °C Wet-bulb temperature 24.0 °C
HEATING INDOOR Dry-bulb temperature 20.0 °C
OUTDOOR Dry-bulb temperature 7.0 °C Wet-bulb temperature 6.0 °C
OBH723C

8
Outdoor model MXZ-4E83VA
Outdoor unit power supply Single phase
230 V, 50 Hz
System
Indoor units number 2 to 4
Piping total length m Max. 70
Connecting pipe length m Max. 25
Height difference (Indoor ~ Outdoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Height difference (Indoor ~ Indoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Function Cooling Heating
Capacity Rated frequency (Min.-Max.) 2 kW 8.3 (3.7 - 9.2) 9.3 (3.4 - 11.6)
Breaker capacity A 25
Electrical
data
Power input (Total) 1, 2 W 2,440 2,000
Running current (Total) 1, 2 A 10.7 8.8
Power factor (Total) 1, 2% 99
Starting current (Total) 1, 2 A 10.7
Coefficient of performance (C.O.P) (Total) 1, 2 3.40 4.65
Compressor
Model SNB220FAGMC
Output W 2,200
Current 1, 2 A 10.1 8.1
Refrigeration oil (Model) L 0.7 (FV50S)
Fan motor
Model E1 , ET1 : SIC-81FW-D888-9 / E2 , ET2 , ER1 : SIC-88FWJ-D888-1
Current 1, 2 A 0.3
Dimensions W x H x D mm 950 x 796 x 330
Weight kg 62
Special
remarks
Air flow (Rated) m3/h 3,336 3,336
Sound level (Rated) dB(A) 49 51
Fan speed (Rated) rpm 620 620
Refrigerant filling capacity (R410A) kg 2.99
1 Measured under rated operating frequency.
2 When connected with below indoor units.
MSZ-EF18VE + MSZ-EF18VE + MSZ-EF22VE + MSZ-EF25VE
NOTE: Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
COOLING INDOOR Dry-bulb temperature 27.0°C Wet-bulb temperature 19.0°C
OUTDOOR Dry-bulb temperature 35.0°C Wet-bulb temperature 24.0°C
HEATING INDOOR Dry-bulb temperature 20.0°C
OUTDOOR Dry-bulb temperature 7.0°C Wet-bulb temperature 6.0°C
OBH723C

9
Outdoor model MXZ-5E102VA
Outdoor unit power supply Single phase
230 V, 50 Hz
System
Indoor units number 2 to 5
Piping total length m Max. 80
Connecting pipe length m Max. 25
Height difference (Indoor ~ Outdoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Height difference (Indoor ~ Indoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Function Cooling Heating
Capacity Rated frequency (Min.-Max.) 2 kW 10.2 (3.9 - 11.0) 10.5 (4.1 - 14.0)
Breaker capacity A 25
Electrical
data
Power input (Total) 1, 2 W 3,150 2,340
Running current (Total) 1, 2 A 13.8 10.3
Power factor (Total) 1, 2% 99
Starting current (Total) 1, 2 A 13.8
Coefficient of performance (C.O.P) (Total) 1, 2 3.24 4.49
Compressor
Model SNB220FAGMC
Output W 2,800
Current 1, 2 A 13.0 9.4
Refrigeration oil (Model) L 0.7 (FV50S)
Fan motor
Model E1 , ET1 : SIC-81FW-D888-9 / E2 , ET2 , ER1 : SIC-88FWJ-D888-1
Current 1, 2 A 0.5
Dimensions W x H x D mm 950 x 796 x 330
Weight kg 63
Special
remarks
Air flow (Rated) m3/h E1 ,
ET1
: 3,336 /
E2
,
ET2
,
ER1
: 3,906 4,080
Sound level (Rated) dB(A) 52 56
Fan speed (Rated) rpm E1 , ET1 : 620 / E2 , ET2 , ER1 : 720 750
Refrigerant filling capacity (R410A) kg 2.99
1 Measured under rated operating frequency.
2 When connected with below indoor units.
MSZ-EF18VE + MSZ-EF18VE + MSZ-EF22VE + MSZ-EF22VE + MSZ-EF22VE
NOTE: Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
COOLING INDOOR Dry-bulb temperature 27.0°C Wet-bulb temperature 19.0°C
OUTDOOR Dry-bulb temperature 35.0°C Wet-bulb temperature 24.0°C
HEATING INDOOR Dry-bulb temperature 20.0°C
OUTDOOR Dry-bulb temperature 7.0°C Wet-bulb temperature 6.0°C
OBH723C

10
Outdoor model MXZ-2E53VAHZ
Outdoor unit power supply Single phase
230 V, 50 Hz
System
Indoor units number 2
Piping total length m Max. 30
Connecting pipe length m Max. 20
Height difference (Indoor ~ Outdoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Height difference (Indoor ~ Indoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Function Cooling Heating
Capacity Rated frequency (Min.-Max.) 2 kW 5.3 (1.1 - 6.0) 6.4 (1.0 - 7.0)
Breaker capacity A 16/25 3
Electrical
data
Power input (Total) 1, 2 W 1,290 1,360
Running current (Total) 1, 2 A 5.7 6.0
Power factor (Total) 1, 2% 98
Starting current (Total) 1, 2 A 6.0
Coefficient of performance (C.O.P) (Total) 1, 2 4.11 4.71
Compressor
Model SNB220FAGMC
Output W 1,400
Current 1, 2 A 5.3 5.5
Refrigeration oil (Model) L 0.7 (FV50S)
Fan motor
Model E1 : SIC-81FW-D888-9, SIC-88FWJ-D888-1 /
ER1
: SIC-88FWJ-D888-1
Current 1, 2 A 0.3
Dimensions W x H x D mm 950 x 796 x 330
Weight kg 61
Special
remarks
Air flow (Rated) m3/h 2,820 2,820
Sound level (Rated) dB(A) 45 47
Fan speed (Rated) rpm 520 520
Refrigerant filling capacity (R410A) kg 2.0
1 Measured under rated operating frequency.
2 When connected with below indoor units.
3 When the amount of current exceeds the allowed value.
MSZ-EF18VE + MSZ-EF35VE
NOTE: Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
COOLING INDOOR Dry-bulb temperature 27.0°C Wet-bulb temperature 19.0°C
OUTDOOR Dry-bulb temperature 35.0°C Wet-bulb temperature 24.0°C
HEATING INDOOR Dry-bulb temperature 20.0°C
OUTDOOR Dry-bulb temperature 7.0°C Wet-bulb temperature 6.0°C
OBH723C