Mitsubishi Electric MXZ-2D33VA-E1, MXZ-2D40VA-E1, MXZ-3D68VA-E1, MXZ-2D53VA-E1, MXZ-4D72VA- E1 Service Manual
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SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ···································3
2. PART NAMES AND FUNCTIONS ·····················4
3. SPECIFICATION ················································5
4. NOISE CRITERIA CURVES ····························13
5. OUTLINES AND DIMENSIONS ······················16
6. WIRING DIAGRAM ··········································20
7. REFRIGERANT SYSTEM DIAGRAM ·············27
8. PERFORMANCE CURVES ·····························34
9. ACTUATOR CONTROL ···································62
10. SERVICE FUNCTIONS ····································63
11. TROUBLESHOOTING ·····································67
12. DISASSEMBLY INSTRUCTIONS ····················97
INDOOR UNITS COMBINATION SHEETS
Models
No. OBH626
REVISED EDITION-B
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)
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
-
E1
MXZ-2D40VA
-
E1
MXZ-2D53VA
-
E1
MXZ-2D53VAH
-
E1
MXZ-3D54VA
-
E1
MXZ-3D68VA
-
E1
MXZ-4D72VA
-
E1
MXZ-4D83VA
-
E1
MXZ-5D102VA
-
E1
MXZ-2D33VA
MXZ-2D40VA
MXZ-2D53VA MXZ-2D53VAH
Please void OBH626 REVISED EDITION-A.
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.
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 specif ed 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.
OBH626B
3
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.
MXZ-2C52VA -
E1
MXZ-2D53VAH -
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. 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. Grill 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).
OBH626B
4
PART NAMES AND FUNCTIONS
2
ACCESSORIES
MXZ-2D33VA
MXZ-2D40VA
MXZ-2D53VA
MXZ-2D53VAH
Air inlet
Air outlet
Drain outlet
Piping
Drain hose
(Back and side)
Model
MXZ-2D33VA
MXZ-2D40VA
MXZ-2D53VA
MXZ-4D83VA
MXZ-5D102VA
MXZ-3D54VA
MXZ-3D68VA
MXZ-4D72VA
Drain socket 1 1
Drain cap 2
Air outlet
Drain outlet
Air inlet
(Back and side)
MXZ-3D54VA
MXZ-3D68VA
MXZ-4D72VA
MXZ-4D83VA
MXZ-5D102VA
Air outlet
Drain outlet
Air inlet
(Back and side)
OBH626B
5
SPECIFICATION
3
Outdoor model MXZ-2D33VA
Outdoor unit power supply
Single phase
230 V, 50 Hz
System
Indoor units number 1 to 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
Coeff cient 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 f ow (Rated) m3 /h 1,974 2,022
Sound level (Rated) dB(A) 49 50
Fan speed (Rated) rpm 860 880
Refrigerant f lling 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
OBH626B
6
Outdoor model MXZ-2D40VA
Outdoor unit power supply
Single phase
230 V, 50 Hz
System
Indoor units number 1 to 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
Coeff cient 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 f ow (Rated) m3 /h 1,752 1,662
Sound level (Rated) dB(A) 49 50
Fan speed (Rated) rpm 840 800
Refrigerant f lling 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
OBH626B
7
Outdoor model MXZ-2D53VA MXZ-2D53VAH
Outdoor unit power supply
Single phase
230 V, 50 Hz
System
Indoor units number 1 to 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
Coeff cient 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 f ow (Rated) m3 /h 1,974 1,998
Sound level (Rated) dB(A) 50 53
Fan speed (Rated) rpm 900 910
Refrigerant f lling 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
OBH626B
8
Outdoor model MXZ-3D54VA
Outdoor unit power supply
Single phase
230 V, 50 Hz
System
Indoor units number 1 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 1,390 1,590
Running current (Total)
1, 2 A 6.1 7.0
Power factor (Total)
1, 2% 99
Starting current (Total)
1, 2 A 7.0
Coeff cient of performance (C.O.P) (Total)
1, 2 3.88 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 f ow (Rated) m3 /h 2,334 2,376
Sound level (Rated) dB(A) 50 53
Fan speed (Rated) rpm 650 660
Refrigerant f lling 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
OBH626B
9
Outdoor model MXZ-3D68VA
Outdoor unit power supply
Single phase
230 V, 50 Hz
System
Indoor units number 1 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
Coeff cient 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 f ow (Rated) m3 /h 2,334 2,376
Sound level (Rated) dB(A) 50 53
Fan speed (Rated) rpm 650 660
Refrigerant f lling 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
OBH626B
10
Outdoor model MXZ-4D72VA
Outdoor unit power supply
Single phase
230 V, 50 Hz
System
Indoor units number 1 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
Coeff cient 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-F764-1
Current
1, 2 A 0.2
Dimensions W x H x D mm 840 x 710 x 330
Weight kg 58
Special
remarks
Air f ow (Rated) m3 /h 2,334 2,376
Sound level (Rated) dB(A) 50 53
Fan speed (Rated) rpm 650 660
Refrigerant f lling capacity (R410A) kg 2.7
1 Measured under rated operating frequency.
2 When connected with below indoor units.
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
OBH626B
11
Outdoor model MXZ-4D83VA
Outdoor unit power supply
Single phase
230 V, 50 Hz
System
Indoor units number 1 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 ) 9.0 ( 3.4 - 11.6 )
Breaker capacity A 25
Electrical
data
Power input (Total) 1, 2 W 2,830 2,420
Running current (Total)
1, 2 A 12.4 10.6
Power factor (Total)
1, 2% 99
Starting current (Total)
1, 2 A 12.4
Coeff cient of performance (C.O.P) (Total)
1, 2 2.93 3.72
Compressor
Model TNB220FMCH
Output W 2,100
Current
1, 2 A 11.76 9.96
Refrigeration oil (Model) L 0.87 (NEO22)
Fan
motor
Model RC0J60-CC
Current
1, 2 A 0.4
Dimensions W x H x D mm 900 x 915 x 320
Weight kg 69
Special
remarks
Air f ow (Rated) m3 /h 2,526 2,628
Sound level (Rated) dB(A) 49 50
Fan speed (Rated) rpm 600 620
Refrigerant f lling capacity (R410A) kg 3.5
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
OBH626B
12
Outdoor model MXZ-5D102VA
Outdoor unit power supply
Single phase
230 V, 50 Hz
System
Indoor units number 1 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 3,910 2,900
Running current (Total)
1, 2 A 17.2 12.7
Power factor (Total)
1, 2% 99
Starting current (Total)
1, 2 A 17.2
Coeff cient of performance (C.O.P) (Total)
1, 2 2.61 3.62
Compressor
Model TNB220FMCH
Output W 2,700
Current
1, 2 A 16.5 12.0
Refrigeration oil (Model) L 0.87 (NEO22)
Fan
motor
Model RC0J60-CC
Current
1, 2 A 0.4
Dimensions W x H x D mm 900 x 915 x 320
Weight kg 70
Special
remarks
Air f ow (Rated) m3 /h 3,396 3,558
Sound level (Rated) dB(A) 53 55
Fan speed (Rated) rpm 780 810
Refrigerant f lling capacity (R410A) kg 4.0
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
OBH626B
13
NOISE CRITERIA CURVES
4
MXZ-2D53VAH
MXZ-2D33VA
MXZ-2D53VA
MXZ-2D40VA
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
49
SPL(dB(A))50LINE
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, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
50
SPL(dB(A))53LINE
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, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
49
SPL(dB(A))50LINE
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, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
50
SPL(dB(A))53LINE
OBH626B
14
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
50
SPL(dB(A))53LINE
MXZ-3D54VA
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
50
SPL(dB(A))53LINE
MXZ-3D68VA
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
50
SPL(dB(A))53LINE
MXZ-4D72VA
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
48
SPL(dB(A))51LINE
MXZ-4D83VA
OBH626B
15
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
48
SPL(dB(A))51LINE
MXZ-5D102VA
OUTDOOR UNIT
MICROPHONE
1m
Test conditions
Cooling :Dry-bulb temperature 35°C Wet-bulb temperature 24°C
Heating :Dry-bulb temperature 7°C Wet-bulb temperature 6°C
OBH626B
16
OUTLINES AND DIMENSIONS
5
MXZ-2D33VA MXZ-2D40VA MXZ-2D53VA MXZ-2D53VAH
Unit: mm
OBH626B
17
1.Installation space
Note : Leave front and both sides
free of obstruction.
Note : Leave rear, overhead and
both sides free of obstruction.
500 or more
100 or more
Note : Leave front and overhead
free of obstruction.
100 or more
350 or more
200 or more
500 or more
2.Service space
100 or more
500 or more
350 or more
350 or more
100 or more
Service space
Liquid pipe : Ø6.35(flared)1/4
C unit connection
B unit connection
A unit connection
Gas pipe : Ø9.52(flared)3/8
Liquid pipe : Ø6.35(flared)1/4
Gas pipe : Ø9.52(flared)3/8
Liquid pipe : Ø6.35(flared)1/4
Gas pipe : Ø9.52(flared)3/8
MXZ-3D54VA MXZ-3D68VA
Unit: mm
OBH626B
18
MXZ-4D72VA
Unit: mm
1.Installation space
Note : Leave front and both sides
free of obstruction.
Note : Leave rear, overhead and
both sides free of obstruction.
500 or more
100 or more
Note : Leave front and overhead
free of obstruction.
100 or more
350 or more
200 or more
500 or more
2.Service space
100 or more
500 or more
350 or more
350 or more
100 or more
Service space
Liquid pipe : Ø6.35(flared)1/4
D unit connection
C unit connection
B unit connection
Gas pipe : Ø9.52(flared)3/8
Liquid pipe : Ø6.35(flared)1/4
Gas pipe : Ø9.52(flared)3/8
Liquid pipe : Ø6.35(flared)1/4
Gas pipe : Ø9.52(flared)3/8
A unit connection
Liquid pipe : Ø6.35(flared)1/4
Gas pipe : Ø12.7(flared)1/2
OBH626B
19
MXZ-4D83VA
MXZ-5D102VA
Unit: mm
23
612
147
405
45
Indoor and
outdoor
connect wiring
(35 x 53) hole
1.Installation space
Note : Leave front and both sides
free of obstruction.
Note : Leave rear, overhead and
both sides free of obstruction.
Air out
42
200 200500
315
355
(Bolt pitch)
387
40
27
16
16
11
24
Drain hole 42
(Fondation bolt M10)
(Fondation bolt M10)
2-U Shaped notched hole
2-12 x 36 Oval hole
Air in
Air in
32025 10
88
475
317
900
Handle
Handle
915
500 or more
100 or more
Note : Leave front and overhead
free of obstruction.
100 or more
350 or more
200 or more
500 or more
2.Service space
100 or more
500 or more
350 or more
350 or more
100 or more
Service space
Liquid pipe : Ø6.35(flared)1/4
E unit connection
(MXZ-5D102VA)
D unit connection
C unit connection
B unit connection
Gas pipe : Ø9.52(flared)3/8
Liquid pipe : Ø6.35(flared)1/4
Gas pipe : Ø9.52(flared)3/8
Liquid pipe : Ø6.35(flared)1/4
Gas pipe : Ø9.52(flared)3/8
Liquid pipe : Ø6.35(flared)1/4
Gas pipe : Ø9.52(flared)3/8
A unit connection
Liquid pipe : Ø6.35(flared)1/4
Gas pipe : Ø12.7(flared)1/2
OBH626B
20
WIRING DIAGRAM
6
MXZ-2D33VA MXZ-2D40VA MXZ-2D53VA
OUTDOOR
DISPLAY
P.C. BOARD
OBH626B
21
MXZ-2D53VAH
OUTDOOR
DISPLAY
P.C. BOARD
OBH626B
22
MXZ-3D54VA
OBH626B
23
MXZ-3D68VA
OBH626B
24
MXZ-4D72VA
OBH626B
25
MXZ-4D83VA
OBH626B
26
MXZ-5D102VA
OBH626B
27
REFRIGERANT SYSTEM DIAGRAM
7
a
b
Outdoor
unit
Indoor
units
10m
10m
10m
Refrigerant piping length (one way, 2 unit total)
Max.
Height
difference
Outdoor unit
precharged
(g)
20m
0
1,150
Stop valve
(with strainer #100)
LEV A
LEV B
Compressor
Defrost
thermistor
RT61
Muffler
4-way valve
Indoor unit
B
Indoor unit
A
Indoor unit
A
Indoor unit
B
Capillary tube
Capillary tube
Strainer
#100
Stop valve
(with strainer #100)
R.V. coil
OFF
ON
Refrigerant flow in cooling
Refrigerant flow in heating
Ambient
temperature
thermistor
RT65
Outdoor heat
exchanger
temperature
thermistor
RT68
FAN-OUT
HEX-OUT
Discharge
temperature
thermistor RT62
Stop valve
(with service port)
Stop valve
(with service port)
Sub muffler
Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the
tables below.
UNIT: mm (inch)
Piping length each indoor unit (a, b) 15 m
Total piping length (a+b) 20 m
Bending point for each unit 15
Total bending point 20
It is irrelevant which unit is higher.
ADDITIONAL REFRIGERANT CHARGE
UNIT: mm
MXZ-2D33VA
MAX REFRIGERANT PIPING LENGTH
Outdoor unit union diameter
For
Indoor unit A
Liquid 6.35(1/4)
Gas 9.52(3/8)
Indoor unit B
Liquid 6.35(1/4)
Gas 9.52(3/8)
OBH626B
28
Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the
tables below.
UNIT: mm (inch)
Piping length each indoor unit (a, b) 20 m
Total piping length (a+b) 30 m
Bending point for each unit 20
Total bending point 30
MXZ-2D40VA
MAX REFRIGERANT PIPING LENGTH
a
b
Outdoor
unit
Indoor
units
15m
10m
15m
Refrigerant piping length (one way, 2 unit total)
Calculation : Xg = 20 g/m x (Refrigerant piping length (m) - 20)
Outdoor unit
precharged
(g)
30m
200
20m
0
1,300
Max.
Height
difference
Outdoor unit union diameter
For
Indoor unit A
Liquid 6.35(1/4)
Gas 9.52(3/8)
Indoor unit B
Liquid 6.35(1/4)
Gas 9.52(3/8)
Stop valve
(with strainer #100)
LEV A
LEV B
Compressor
Muffler
4-way valve
Indoor unit
B
Indoor unit
A
Indoor unit
A
Indoor unit
B
Capillary tube
Capillary tube
Stop valve
(with strainer #100)
R.V. coil
OFF
ON
Refrigerant flow in cooling
Refrigerant flow in heating
Discharge
temperature
thermistor RT62
Stop valve
(with service port)
Stop valve
(with service port)
Defrost
thermistor
RT61
Distributor
Capillary tube
Strainer
#100
Ambient
temperature
thermistor
RT65
Outdoor heat
exchanger
temperature
thermistor
RT68
FAN- OUT
HEX-OUT
Sub muffler
It is irrelevant which unit is higher.
ADDITIONAL REFRIGERANT CHARGE
UNIT: mm
OBH626B
29
Stop valve
(with strainer #100)
LEV A
LEV B
Compressor
Defrost
thermistor
RT61
Distributor
Muffler
4-way valve
Indoor unit
B
Indoor unit
A
Indoor unit
A
Indoor unit
B
Capillary tube
Capillary tube
Capillary tube
Strainer
#100
Stop valve
(with strainer #100)
R.V. coil
OFF
ON
Refrigerant flow in cooling
Refrigerant flow in heating
Ambient
temperature
thermistor
RT65
Outdoor heat
exchanger
temperature
thermistor
RT68
FAN-OUT
HEX-OUT
Discharge
temperature
thermistor RT62
Stop valve
(with service port)
Stop valve
(with service port)
Sub muffler
Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the
tables below.
UNIT: mm (inch)
Piping length each indoor unit (a, b) 20 m
Total piping length (a+b) 30 m
Bending point for each unit 20
Total bending point 30
UNIT: mm
MXZ-2D53VA MXZ-2D53VAH
MAX REFRIGERANT PIPING LENGTH
a
b
Outdoor
unit
Indoor
units
15m
10m
15m
Refrigerant piping length (one way, 2 unit total)
Calculation : Xg = 20 g/m x (Refrigerant piping length(m) - 20)
Outdoor unit
precharged
(g)
30m
200
20m
0
1,300
Max.
Height
difference
Outdoor unit union diameter
For
Indoor unit A
Liquid 6.35(1/4)
Gas 9.52(3/8)
Indoor unit B
Liquid 6.35(1/4)
Gas 9.52(3/8)
It is irrelevant which unit is higher.
ADDITIONAL REFRIGERANT CHARGE
OBH626B
30
Strainer
#100
Power
receiver
LEV A
LEV B
LEV C
Oil separator
Compressor
Defrost
thermistor
RT61
Distributor
Muffler
4-way valve
LEV E
Indoor unit
C
Indoor unit
B
Indoor unit
A
Indoor unit
A
Indoor unit
B
Indoor unit
C
Capillary tube
Capillary tube
Capillary tube
Capillary tube
Capillary tube
Discharge
temperature
thermistor RT62
Strainer
#100
Strainer
#100
Strainer
#100
R.V. coil
OFF
ON
Refrigerant flow in cooling
Refrigerant flow in heating
Ambient
temperature
thermistor
RT65
Outdoor heat
exchanger
temperature
thermistor
RT68
FAN- OUT
HEX-OUT
Strainer
#100
Stop valve with
service port
Stop valve
High-pressure switch
(MXZ-3D68VA only)
Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the
tables below.
When diameter of refrigerant pipe is different from that of outdoor unit union, use optional Different-diameter pipe.
For further information on Different-diameter pipe, refer to "PARTS CATALOG".
UNIT: mm (inch)
UNIT: mm
MXZ-3D54VA MXZ-3D68VA
MAX REFRIGERANT PIPING LENGTH
Outdoor unit union diameter
For
Indoor unit A
Liquid 6.35(1/4)
Gas 9.52(3/8)
Indoor unit B
Liquid 6.35(1/4)
Gas 9.52(3/8)
Indoor unit C
Liquid 6.35(1/4)
Gas 9.52(3/8)
a
b
c
Outdoor
unit
Indoor
units
15m
10m
15m
Refrigerant piping length (one way, 3 unit total)
Calculation : Xg = 20 g/m x (Refrigerant piping length (m) - 40)
Max.
Height
difference
Outdoor unit
precharged
(g)
50m
200
60m
400
40m
0
2,700
It is irrelevant which unit is higher.
ADDITIONAL REFRIGERANT CHARGE
3D54 3D68
Piping length each indoor unit (a, b, c) 25m 25m
Total piping length (a+b+c) 50m 60m
Bending point for each unit 25 25
Total bending point 50 60
OBH626B
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