Mitsubishi Electric MXZ-2D33VA User manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ··································· 2
2. PART NAMES AND FUNCTIONS····················· 4
3. SPECIFICATION················································ 5
4. NOISE CRITERIA CURVES···························· 14
5. OUTLINES AND DIMENSIONS ······················ 17
6. WIRING DIAGRAM·········································· 21
7. REFRIGERANT SYSTEM DIAGRAM············· 50
8. PERFORMANCE CURVES····························· 59
9. ACTUATOR CONTROL··································· 87
10. SERVICE FUNCTIONS···································· 88
11. TROUBLESHOOTING····································· 92
12. DISASSEMBLY INSTRUCTIONS·················· 121
INDOOR UNITS COMBINATION SHEETS
Models
No. OBH626
REVISED EDITION-F
HFC
utilized
R410A
SPLIT-TYPE AIR CONDITIONERS
OUTDOOR UNIT
Indoor unit service manual
MSZ-EF•VE Series (OBH589)
MSZ-SF•VA Series (OBH555)
MSZ-SF•VE Series (OBH600)
MSZ-FH•VE Series (OBH623)
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)
NOTE:
RoHS compliant products have <G> mark
on the spec name plate.
PARTS CATALOG (OBB626)
MXZ-2D33VA
MXZ-2D40VA
MXZ-2D42VA
MXZ-2D53VA MXZ-2D53VAH
Please void OBH626 REVISED EDITION-E
MXZ-2D33VA -E1 ,E2 ,ER2 ,ET2
MXZ-2D40VA -E1 ,ER2
MXZ-2D42VA -E2 ,ET2
MXZ-2D53VA -E1 ,E2 ,ER2 ,ET2
MXZ-2D53VAH -E1 ,E2 ,ER2
MXZ-3D54VA -E1
MXZ-3D54VA2 -E2 ,ER2 ,ET2
MXZ-3D68VA -E1 ,E2 ,ER2 ,ET2
MXZ-4D72VA -E1 ,E2 ,ER2 ,ET2
MXZ-4D83VA -E1 ,E2 ,ER1 ,ER2 ,ET2
MXZ-5D102VA -E1 ,E2 , ER1 ,ER2 ,ET2
Revision F:
• MXZ-2D33/2D42/2D53/3D68/4D72/4D83/5D102VA -
ET2
and MXZ-3D54VA2 -
ET2 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-3D54VA- E1 , MXZ-3D68VA- E1 , MXZ-4D72VA- E1 , MXZ-4D83VA- E1 and MXZ-5D102VA- E1 have been added.
Revision B:
• INDOOR UNITS COMBINATION SHEETS for MXZ-3D54VA, MXZ-3D68VA, MXZ-4D72VA, MXZ-4D83VA and MXZ-
5D102VA have been added.
• 11-4. TROUBLESHOOTING CHECK TABLE (MXZ-2D) has been modified.
Revision C:
• MXZ-4D83VA- ER1 and MXZ-5D102VA- ER1 have been added.
Revision D:
• MXZ-2D40VA -
ER2
, MXZ-2D42VA -
E2
, MXZ-2D53VAH -
E2
,
ER2 , MXZ-3D54VA2
-
E2
,
ER2
and MXZ-2D33/2D53/3D68/4
D72/4D83/5D102VA -
E2
,
ER2 have been added.
TECHNICAL CHANGES
1
MXZ-2C30VA - E1 MXZ-2D33VA - E1
1. Grill has been changed.
2. Ice guard has been added.
3. Electrical parts have been changed.
4. Fan motor has been changed.
5. Indoor units combinations have been added.
6. Compressor has been changed. (KNB073FGDHC KNB073FFDHC)
MXZ-2C40VA - E1 MXZ-2D40VA - E1
MXZ-2C52VA - E1 MXZ-2D53VA - E1
1. Grill has been changed.
2. Ice guard has been added.
3. Electrical parts have been changed.
4. Fan motor has been changed.
5. Indoor units combinations have been added.
Revision E:
• The tables of WHEN CONNECTING TO MFZ-KJ SERIES INDOOR UNIT for MXZ-2D33/2D53/3D68/4D72VA- E2 , ER2 ,
MXZ-2D42VA- E2 , MXZ-2D53VAH- E2 , ER2 and MXZ-3D54VA2- E2 , ER2 have been added to 7. REFRIGERANT
SYSTEM DIAGRAM.
Revision F:
• MXZ-2D33/2D42/2D53/3D68/4D72/4D83/5D102VA -
ET2 and MXZ-3D54VA2
-
ET2 have been added.
OBH626F

3
MXZ-2C52VA - E1 MXZ-2D53VAH - E1
1. Grille has been changed.
2. Ice guard has been added.
3. Electrical parts have been changed.
4. Fan motor has been changed.
5. Indoor units combinations have been added.
6. Base heater has been added.
7. Drain socket has been removed.
MXZ-3C54VA - E1 MXZ-3D54VA - E1
MXZ-3C68VA - E1 MXZ-3D68VA - E1
MXZ-4C71VA - E1 MXZ-4D72VA - E1
1. Grille has been changed.
2. Ice guard has been added.
3. Power board has been changed.
4. Electrical control P.C. board has been changed.
5. Noise filter P.C. board has been changed.
6. Fan motor has been changed.
7. Indoor units combinations have been added (MSZ-FH Series).
MXZ-4C80VA2 - E1 MXZ-4D83VA - E1
MXZ-5C100VA2 - E1 MXZ-5D102VA - E1
1. Indoor units combinations have been added (MSZ-FH Series).
MXZ-4D83VA -ER1
MXZ-5D102VA -ER1
1. New model
MXZ-2D33VA - E1 MXZ-2D33VA - E2
MXZ-2D53VA - E1 MXZ-2D42VA - E2
MXZ-2D53VA - E1 MXZ-2D53VA - E2
MXZ-2D53VAH - E1 MXZ-2D53VAH - E2
MXZ-3D54VA - E1 MXZ-3D54VA2 - E2
MXZ-3D68VA - E1 MXZ-3D68VA - E2
MXZ-4D72VA - E1 MXZ-4D72VA - E2
MXZ-4D83VA - E1 MXZ-4D83VA - E2
MXZ-5D102VA - E1 MXZ-5D102VA - E2
1. Indoor units combinations have been added (MFZ-KJ Series).
MXZ-4D83VA - ER1 MXZ-4D83VA - ER2
MXZ-5D102VA - ER1 MXZ-5D102VA - ER2
1. Indoor units combinations have been added (MFZ-KJ Series).
MXZ-2D33VA - ER2
MXZ-2D53VA - ER2
MXZ-2D53VAH - ER2
MXZ-3D54VA2 - ER2
MXZ-3D68VA - ER2
MXZ-4D72VA - ER2
1. New model
2. Indoor units combinations have been added (MFZ-KJ Series).
MXZ-2D40VA - ER2
1. New model
MXZ-2D33VA - ET2
MXZ-2D42VA - ET2
MXZ-2D53VA - ET2
MXZ-3D54VA2 - ET2
MXZ-3D68VA - ET2
MXZ-4D72VA - ET2
MXZ-4D83VA - ET2
MXZ-5D102VA - ET2
1. New model
OBH626F

4
PART NAMES AND FUNCTIONS
2
ACCESSORIES
MXZ-2D33VA
MXZ-2D40VA
MXZ-2D42VA
MXZ-2D53VA
MXZ-2D53VAH
Air inlet
Air outlet
Drain outlet
Piping
Drain hose
(Back and side)
Model
MXZ-2D33VA
MXZ-2D40VA
MXZ-2D42VA
MXZ-2D53VA
MXZ-4D83VA
MXZ-5D102VA
MXZ-3D54VA
MXZ-3D54VA2
MXZ-3D68VA
MXZ-4D72VA
Drain socket 1 1
Drain cap 2
Air outlet
Drain outlet
Air inlet
(Back and side)
MXZ-3D54VA
MXZ-3D54VA2
MXZ-3D68VA
MXZ-4D72VA
MXZ-4D83VA
MXZ-5D102VA
Air outlet
Drain outlet
Air inlet
(Back and side)
OBH626F

5
SPECIFICATION
3
Outdoor model MXZ-2D33VA
Outdoor unit power supply Single phase
230 V, 50 Hz
System
Indoor units number 2
Piping total length m Max. 20
Connecting pipe length m Max. 15
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 3.3 (1.1 - 3.8) 4.0 (1.0 - 4.1)
Breaker capacity A 15
Electrical
data
Power input (Total) 1, 2 W 900 960
Running current (Total) 1, 2 A 4.3 4.6
Power factor (Total) 1, 2% 90
Starting current (Total) 1, 2 A 4.6
Coefficient of performance (C.O.P) (Total) 1, 2 3.67 4.17
Compressor
Model KNB073FFDHC
Output W 800
Current 1, 2 A 4.0 4.2
Refrigeration oil (Model) L 0.32 (NEO22)
Fan motor
Model RC0J50-FA
Current 1, 2 A 0.35
Dimensions W x H x D mm 800 x 550 x 285
Weight kg 32
Special
remarks
Air flow (Rated) m3/h 1,974 2,022
Sound level (Rated) dB(A) 49 50
Fan speed (Rated) rpm 860 880
Refrigerant filling capacity (R410A) kg 1.15
1 Measured under rated operating frequency.
2 When connected with below indoor units.
MSZ-SF15VA + 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
OBH626F

6
Outdoor model MXZ-2D40VA
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 4.0 (1.1 - 4.3) 4.5 (1.0 - 4.8)
Breaker capacity A 15
Electrical
data
Power input (Total) 1, 2 W 970
Running current (Total) 1, 2 A 4.7
Power factor (Total) 1, 2% 90
Starting current (Total) 1, 2 A 4.7
Coefficient of performance (C.O.P) (Total) 1, 2 4.12 4.64
Compressor
Model KNB092FFDHC
Output W 1,100
Current 1, 2 A 4.4 4.2
Refrigeration oil (Model) L 0.32 (NEO22)
Fan motor
Model RC0J50-FA
Current 1, 2 A 0.35
Dimensions W x H x D mm 800 x 550 x 285
Weight kg 34
Special
remarks
Air flow (Rated) m3/h 1,752 1,662
Sound level (Rated) dB(A) 49 50
Fan speed (Rated) rpm 840 800
Refrigerant filling capacity (R410A) kg 1.3
1 Measured under rated operating frequency.
2 When connected with below indoor units.
MSZ-EF18VE + 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
OBH626F

7
Outdoor model MXZ-2D42VA
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 4.2 (1.1 - 4.4) 4.5 (1.0 - 4.8)
Breaker capacity A 15
Electrical
data
Power input (Total) 1, 2 W 1,000 930
Running current (Total) 1, 2 A 4.5 4.2
Power factor (Total) 1, 2% 97
Starting current (Total) 1, 2 A 4.5
Coefficient of performance (C.O.P) (Total) 1, 2 4.20 4.84
Compressor
Model SNB130FGBHT
Output W 1,150
Current 1, 2 A 4.0 3.6
Refrigeration oil (Model) L 0.45 (NEO22)
Fan motor
Model RC0J50-FA
Current 1, 2 A 0.35
Dimensions W x H x D mm 800 x 550 x 285
Weight kg 37
Special
remarks
Air flow (Rated) m3/h 1,662 1,998
Sound level (Rated) dB(A) 46 51
Fan speed (Rated) rpm 800 910
Refrigerant filling capacity (R410A) kg 1.3
1 Measured under rated operating frequency.
2 When connected with below indoor units.
MSZ-EF18VE + 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
OBH626F

8
Outdoor model MXZ-2D53VA MXZ-2D53VAH
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 - 5.6) 6.4 (1.0 - 7.0)
Breaker capacity A 15
Electrical
data
Power input (Total) 1, 2 W 1,540 1,700
Running current (Total) 1, 2 A 6.9 7.6
Power factor (Total) 1, 2% 97
Starting current (Total) 1, 2 A 7.6
Coefficient of performance (C.O.P) (Total) 1, 2 3.44 3.76
Compressor
Model SNB130FGBHT
Output W 1,400
Current 1, 2 A 6.6 7.2
Refrigeration oil (Model) L 0.45 (NEO22)
Fan motor
Model RC0J50-FA
Current 1, 2 A 0.35
Dimensions W x H x D mm 800 x 550 x 285
Weight kg MXZ-2D53VA: 37 MXZ-2D53VAH: 38
Special
remarks
Air flow (Rated) m3/h 1,974 1,998
Sound level (Rated) dB(A) 50 53
Fan speed (Rated) rpm 900 910
Refrigerant filling capacity (R410A) kg 1.3
1 Measured under rated operating frequency.
2 When connected with below indoor units.
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
OBH626F

9
Outdoor model MXZ-3D54VA MXZ-3D54VA2
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, 2W
MXZ-3D54VA: 1,390
MXZ-3D54VA2: 1,350 1,590
Running current (Total) 1, 2A
MXZ-3D54VA: 6.1
MXZ-3D54VA2: 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 MXZ-3D54VA: 3.88
MXZ-3D54VA2: 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-F764-1
Current 1, 2 A 0.2
Dimensions W x H x D mm 840 x 710 x 330
Weight kg 57
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 below indoor units.
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
OBH626F

10
Outdoor model MXZ-3D68VA
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-F764-1
Current 1, 2 A 0.2
Dimensions W x H x D mm 840 x 710 x 330
Weight kg 57
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 below indoor units.
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
OBH626F