Mitsubishi Electric MUZ-HJ VA Series User manual

CONTENTS
1. TECHNICAL CHANGES ······························3
2. PART NAMES AND FUNCTIONS··················4
3. SPECIFICATION ········································5
4. NOISE CRITERIA CURVES··························7
5. OUTLINES AND DIMENSIONS·····················9
6. WIRING DIAGRAM···································10
7. REFRIGERANT SYSTEM DIAGRAM··········· 11
8. SERVICE FUNCTIONS······························13
9. MICROPROCESSOR CONTROL ················15
10. TROUBLESHOOTING·······························19
11. DISASSEMBLY INSTRUCTIONS·················32
MSZ-HJ25VA -E1 , ER1
MSZ-HJ35VA -E1 , ER1
MSZ-HJ50VA -E1 , ER1
MSZ-HJ60VA -E1 , ER1
MSZ-HJ71VA -E1 , ER1
Outdoor unit service manual
MUZ-HJ·VA Series (OBH648)
MXZ-HJ•VA Series
SERVICE MANUAL No. OBH647
REVISED EDITION-C
INDOOR UNIT
PARTS CATALOG (OBB647)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
SPLIT-TYPE AIR CONDITIONERS
Models
Revision C:
• MSZ-HJ60VA- E1 , ER1 and
MSZ-HJ71VA- E1 , ER1 have been added.
Please void OBH647 REVISED EDITION-B.
MSZ-HJ25VA
MSZ-HJ35VA
MSZ-HJ50VA

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:
• MSZ-HJ50VA- E1 has been added.
Revision B:
• MSZ-HJ25VA- ER1 , MSZ-HJ35VA- ER1 and MSZ-HJ50VA- ER1 have been added.
Revision C:
• MSZ-HJ60VA- E1 , ER1 and MSZ-HJ71VA- E1 , ER1 have been added.
OBH647C

3
1TECHNICAL CHANGES
MSZ-HJ25VA - E1 , ER1
MSZ-HJ35VA - E1 , ER1
MSZ-HJ50VA - E1 , ER1
1. New model
MSZ-HJ60VA - E1 , ER1
MSZ-HJ71VA - E1 , ER1
1. New model
OBH647C

4
Operation indicator lamp
Remote control
receiving section
Emergency
operation switch
Horizontal vane
Air inlet
Air ¿lter
Front panel
Air outlet Heat exchanger
Emergency operation switch
Remote controller
Operation indicator lamp
Remote control
receiving section
Emergency
operation switch
Horizontal vane
Air inlet
Air ¿lter
Front panel
Air outlet Heat exchanger
Emergency operation switch
Remote controller
ACCESSORIES
MSZ-HJ25VA MSZ-HJ35VA MSZ-HJ50VA
MSZ-HJ60VA MSZ-HJ71VA
Installation plate 1
Installation plate fixing screw 4 ×25 mm 5
Battery (AAA) for remote controller 2
Wireless remote controller 1
Felt tape (Used for left or left-rear piping) 1
2PART NAMES AND FUNCTIONS
OBH647C

5
3SPECIFICATION
Indoor model MSZ-HJ25VA MSZ-HJ35VA MSZ-HJ50VA
Power supply Single phase 230 V, 50 Hz
Breaker Capacity A 10 12
Electrical data
Power input 1 (Total) Cooling W730 1,040 2,050
Heating 870 995 1,480
Running current 1
(Total)
Cooling A3.7 4.9 9.0
Heating 4.2 4.8 6.6
Power factor 1 (Total) Cooling %85 92 99
Heating 90 97
Starting current 1 (Total) A 4.2 4.9 9.0
Fan motor
Model RC0J40-EF
Current 1 Cooling A0.19 0.24 0.27
Heating 0.20 0.22 0.34
Dimensions W × H × D mm 799 × 290 × 232
Weight kg 9
Special remarks
Air direction 5
Airflow
Cooling
Super High
m3/h
571 654 772
High 438 470 667
Med. 328 341 547
Low 227 380
Heating
Super High
m3/h
598 619 861
High 451 667
Med. 328 497
Low 208 364
Sound level
Cooling
Super High
dB(A)
43 45
High 37 38 40
Med. 30 31 36
Low 22 28
Heating
Super High
dB(A)
43 44 47
High 37 41
Med. 30 34
Low 23 27
Fan speed
Cooling
Super High
rpm
1,080 1,200 1,120
High 880 930 1,000
Med. 710 730 860
Low 550 660
Heating
Super High
rpm
1,120 1,150 1,220
High 900 1,000
Med. 710 800
Low 520 640
Fan speed regulator 4
Remote controller model MP13A
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
1 Measured under rated operating frequency.
Specifications and rated conditions of main electric parts
Fuse (F11) T3.15AL250V
Horizontal vane motor (MV) 12 VDC
Varistor
(NR11) S10K300E2K1 (ERZV10D471)
Terminal block (TB) 5P
OBH647C