Mitsubishi Electric MXZ-4E72VA-E1 User manual

HFC
utilized
R410A
SERVICE MANUAL No. OBH723
REVISED EDITION-G
OUTDOOR UNIT
NOTE:
RoHS compliant products have <G> mark
on the spec name plate. PARTS CATALOG (OBB723)
Models
MXZ-3E54VA -E1 , E2 , ET1 , ET2 , ER1 , ER2
MXZ-3E68VA -E1 , E2 , ET1 , ET2 , ER1 , ER2
MXZ-4E72VA -E1 , E2 , ET1 , ET2 , ER1 , ER2
MXZ-4E83VA -E1 , E2 , E3 , E4 , ET1 , ET2 , ET3 , ET4 , ER1 , ER2 , ER3
MXZ-5E102VA -E1 , E2 , E3 , E4 , ET1 , ET2 , ET3 , ET4 , ER1 , ER2 , ER3
MXZ-2E53VAHZ -E1 , E2 , ER1 , ER2
MXZ-4E83VAHZ -E1 , E2 , E3 , ER1 , ER2 , ER3
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-AP•VF Series (OBH799)
MSZ-AP•VG(K) Series (OBH589, OBH791)
MSZ-LN•VG Series (OBH766)
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-M•DA(L)Series (HWE17040)
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············· 56
8. PERFORMANCE CURVES····························· 64
9. ACTUATOR CONTROL··································· 92
10. SERVICE FUNCTIONS···································· 93
11. TROUBLESHOOTING····································· 96
12. DISASSEMBLY INSTRUCTIONS···················118
MXZ-4E83VA
MXZ-5E102VA
MXZ-2E53VAHZ
OBH723 REVISED EDITION-F is void.
Revision G:
• MXZ-3E54VA- ER2 , MXZ-3E68VA- ER2 , MXZ-
4E72VA- ER2 , MXZ-4E83VA- ER3 , MXZ-5E102VA-
ER3 , MXZ-2E53VAHZ- ER2 and MXZ-4E83VAHZ-
ER3 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.
Revision D:
• MXZ-4E83VA- E3 , ET3 , ER2 , MXZ-5E102VA- E3 , ET3 , ER2 and MXZ-4E83VAHZ- E2 , ER2 have been added.
Revision E:
• "8-2. CAPACITY AND INPUT CORRECTION BY INVERTER OUTPUT FREQUENCY (single operation)" for MXZ-3E54VA,
MXZ-3E68VA and MXZ-4E72VA have been modified.
Revision F:
• MXZ-3E54VA- E2 , ET2 , MXZ-3E68VA- E2 , ET2 , MXZ-4E72VA- E2 , ET2 , MXZ-4E83VA- E4 , ET4 , MXZ-5E102VA- E4 ,
ET4 , MXZ-2E53VAHZ- E2 , and MXZ-4E83VAHZ- E3 have been added.
Revision G:
• MXZ-3E54VA- ER2 , MXZ-3E68VA- ER2 , MXZ-4E72VA- ER2 , MXZ-4E83VA- ER3 , MXZ-5E102VA- ER3 , MXZ-2E53VAHZ-
ER2 and MXZ-4E83VAHZ- ER3 have been added.
OBH723G

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.
MXZ-4E83VA -ER1 MXZ-4E83VA -ER2
1. Outdoor control P.C. board has been changed.
MXZ-4E83VA - E2 , ET2 MXZ-4E83VA - E3 , ET3
1. Outdoor control P.C. board has been changed.
MXZ-5E102VA -ER1 MXZ-5E102VA -ER2
1. Outdoor control P.C. board has been changed.
MXZ-5E102VA - E2 , ET2 MXZ-5E102VA - E3 , ET3
1. Outdoor control P.C. board has been changed.
MXZ-4E83VAHZ - E1 , ER1 MXZ-4E83VAHZ - E2 , ER2
1. Outdoor control P.C. board has been changed.
MXZ-3E54VA - E1 , ET1 MXZ-3E54VA - E2 , ET2
MXZ-3E68VA - E1 , ET1 MXZ-3E68VA - E2 , ET2
MXZ-4E72VA - E1 , ET1 MXZ-4E72VA - E2 , ET2
MXZ-4E83VA - E3 , ET3 MXZ-4E83VA - E4 , ET4
MXZ-5E102VA - E3 , ET3 MXZ-5E102VA - E4 , ET4
MXZ-2E53VAHZ - E1 MXZ-2E53VAHZ - E2
MXZ-4E83VAHZ - E2 MXZ-4E83VAHZ - E3
1. Outdoor control P.C. board has been changed.
2. Outdoor power P.C. board has been changed.
MXZ-3E54VA -ER1 MXZ-3E54VA -ER2
MXZ-3E68VA -ER1 MXZ-3E68VA -ER2
MXZ-4E72VA -ER1 MXZ-4E72VA -ER2
MXZ-4E83VA -ER2 MXZ-4E83VA -ER3
MXZ-5E102VA -ER2 MXZ-5E102VA -ER3
MXZ-2E53VAHZ -ER1 MXZ-2E53VAHZ -ER2
MXZ-4E83VAHZ -ER2 MXZ-4E83VAHZ -ER3
1. Outdoor control P.C. board has been changed.
2. Outdoor power P.C. board has been changed.
OBH723G

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
OBH723G

5
SPECIFICATION
3
Outdoor model MXZ-3E54VA
Outdoor unit power supply Single phase
220 -230 - 240 V, 50 Hz / 220V, 60Hz 3
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 6.2 - 5.9 - 5.7 7.3 - 7.0 - 6.7
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 SIC-82FX-F764-1
Output W 1,400
Current 1, 2 A 5.72 6.62
Refrigeration oil (Model) L 0.7 (NEO22)
Fan
motor
Model E1 , ET1 ,ER1 : SIC-71FW-F764-2
E2 , ET2 ,ER2 : SIC-82FX-F764-1
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
3 220 and 240 V are only - E2 , ET2 and -ER2 .
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
OBH723G