Mitsubishi Electric MSZ-DM25VA-E1 User manual

CONTENTS
1. TECHNICAL CHANGES ······························3
2. PART NAMES AND FUNCTIONS··················4
3. SPECIFICATION ········································5
4. NOISE CRITERIA CURVES··························6
5. OUTLINES AND DIMENSIONS·····················7
6. WIRING DIAGRAM·····································8
7. REFRIGERANT SYSTEM DIAGRAM·············9
8. SERVICE FUNCTIONS······························10
9. MICROPROCESSOR CONTROL ················12
10. TROUBLESHOOTING·······························16
11. DISASSEMBLY INSTRUCTIONS·················28
Outdoor unit service manual
MUZ-DM·VA Series (OBH751)
MXZ-DM•VA Series (OBH739)
MSZ-DM25VA
MSZ-DM35VA
INDOOR UNIT
Models
MSZ-DM25VA -E1 , ER1
MSZ-DM35VA -E1 , ER1
SERVICE MANUAL
NOTE:
RoHS compliant products have
<G> mark on the spec name plate.
No. OBH750
PARTS CATALOG (OBB750)

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.
OBH750

3
1TECHNICAL CHANGES
MSZ-DM25VA - E1 , ER1
MSZ-DM35VA - E1 , ER1
1. New model
OBH750

4
ACCESSORIES
MSZ-DM25VA MSZ-DM35VA
Installation plate 1
Installation plate fixing screw 4 ×25 mm 5
Wireless remote controller 1
Felt tape (For left or left-rear piping) 1
Battery (AAA) for remote controller 2
Air cleaning filter (Silver-ionized air purifer filter) 1
2PART NAMES AND FUNCTIONS
Operation indicator lamp
Remote control
receiving section
Horizontal vane
Air inlet
Air ¿lter
Front panel
Air outlet Heat exchanger
Emergency operation switch
Remote controller
Air cleaning ¿lter
(Silver-ionized air
purifier filter)
Display section
OBH750

5
3SPECIFICATION
Indoor model MSZ-DM25VA MSZ-DM35VA
Power supply Single phase 230 V, 50 Hz
Breaker Capacity A 10
Electrical data
Power input 1 (Total) Cooling W710 1,020
Heating 850 975
Running current 1
(Total)
Cooling A3.6 4.8
Heating 4.1 4.7
Power factor 1 (Total) Cooling %85 92
Heating 90
Starting current 1 (Total) A 4.1 4.8
Fan motor
Model RC0J40-EF
Current 1 Cooling A0.19 0.24
Heating 0.20 0.22
Dimensions W × H × D mm 799 × 290 × 232
Weight kg 9
Special remarks
Air direction 5
Airflow
Cooling
Super High
m3/h
570 654
High 438 468
Med. 330 342
Low 228
Heating
Super High
m3/h
600 618
High 450
Med. 330
Low 210
Sound level
Cooling
Super High
dB(A)
43 45
High 37 38
Med. 30 31
Low 22
Heating
Super High
dB(A)
43 44
High 37
Med. 30
Low 23
Fan speed
Cooling
Super High
rpm
1,080 1,200
High 880 930
Med. 710 730
Low 550
Heating
Super High
rpm
1,120 1,150
High 900
Med. 710
Low 520
Fan speed regulator 4
Remote controller model RH16A
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
OBH750