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Revision A: |
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● Power input of SPECIFICATION has modified. |
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● Model name of remote controller has been |
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FLOOR AND CEILING TYPE AIR CONDITIONERS |
corrected. |
||||||||||||||||||||||||||||||
Please void OB338.
No. OB338
REVISED EDITION-A
SERVICE MANUAL
Wireless type Models
MCF-A12WV MCF-A18WV MCF-A24WV
-E1 (WH)
-E1 (WH)
-E1 (WH)
(When installed on the floor)
Indication of model name
MCF-A12WV - E1 MCF-A18WV - E1 MCF-A24WV - E1
(When installed on the ceiling)
CONTENTS
1.TECHNICAL CHANGES ···············
2.PART NAMES AND FUNCTIONS···········
3.SPECIFICATION··················
4.NOISE CRITERIA CURVES ·············
5.OUTLINES AND DIMENSIONS ············
6.WIRING DIAGRAM ·················
7.REFRIGERANT SYSTEM DIAGRAM ·········
8.SERVICE FUNCTIONS ···············
9.TROUBLESHOOTING················
10.DISASSEMBLY INSTRUCTIONS···········
11.PARTS LIST····················
12.OPTIONAL PARTS·················
NOTE:
• This service manual describes technical data of indoor units
• As for outdoor units MUCF-A18WV |
- E1 and MUCF-A24WV - E1 , refer to the service manual OB339. |
• As for outdoor unit MU-A12YV - E1 |
, refer to the service manual OB330 REVISED EDITION-A. |
Revision A:
•Power input of SPECIFICATION has modified. •Model name of remote controller has been corrected.
SPECIFICATION, SERVICE FUNCTION and PARTS LIST have modified.
1 
TECHNICAL CHANGES
MCF-13NV - E4 MCF-A12WV - E1 |
MCF-18NV - E3 MCF-A18WV - E1 |
1.Rated voltage has changed. (220-240V 230V)
2.Indoor electronic control P.C. board has changed.
3.Horizontal vane has changed.
4.Terminal block has changed.
5.Indoor heat exchanger has changed.
6.Remote controller has changed. Econo cool operation has been added.
1.Rated voltage has changed. (220-240V 230V)
2.Indoor electronic control P.C. board has changed.
3.Horizontal vane has changed.
4.Terminal block has changed.
5.Indoor heat exchanger has changed.
6.Remote controller has changed. Econo cool operation has been added.
7.Indoor fan motor has changed. (RB4V19-AB RB4V19-AC) 7. Diameter of union has changed. (Gas: {15.88 {12.7)
8.Indoor fan motor has changed. (RB4V25-AB RB4V25-AC)
MCF-24NV - E3 MCF-A24WV - E1
1.Rated voltage has changed. (220-240V 230V)
2.Indoor electronic control P.C. board has changed.
3.Horizontal vane has changed.
4.Terminal block has changed.
5.Indoor heat exchanger has changed.
6.Remote controller has changed. Econo cool operation has been added.
7.Diameter of union has changed. (Liquid: {9.52 {6.35)
8.Indoor fan motor has changed. (RB4V36-AB RB4V36-DB)
2 
PART NAMES AND FUNCTIONS
MCF-A12WV - E1 MCF-A18WV - E1 MCF-A24WV - E1
INDOOR UNIT
(When installed on the floor)
Vertical vanes
Horizontal vane
Operation indicator lamp
Receiving section
Front panel
Air cleaning filter
(White bellows type)(option)
Air inlet
Air filter
Deodorizing filter
(Gray sponge type)(option)
Operation section
(When the air inlet grille is opened.)
Remote controller
(When installed on the ceiling)
Emergency operation switch
ACCESSORIES
|
Item |
Q'ty |
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Installation plate |
2 |
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Unit fixing screw |
2 |
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5 o 12mm |
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Wireless remote |
1 |
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controller |
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Remote controller |
1 |
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holder |
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Fixing screw for |
2 |
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3.5 o 16mm (Black) |
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Battery (AAA) for |
2 |
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remote controller |
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Drain hose |
1 |
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Drain pipe cover |
1 |
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Knockout cover |
1 |
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Screw for 4 o 10mm |
2 |
2
MCF-A12WV - E1 MCF-A18WV - E1 MCF-A24WV - E1
REMOTE CONTROLLER
Signal transmitting section 
Operation display section |
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PM |
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OPERATE /STOP |
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AM |
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(ON /OFF)button |
ON/OFF |
TOO |
TOO |
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WARM |
COOL |
TEMPERATURE buttons
Open the front lid. |
CLOCK |
PM |
AM |
ON/OFF |
TOO |
TOO |
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WARM |
COOL |
FAN SPEED CONTROL button |
FAN |
STOP |
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I FEEL COOL |
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VANE |
START |
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FAN DRY |
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OPERATION SELECT button |
MODE |
HR. |
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MIN. |
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ECONO COOL button |
ECONO COOL |
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RESET CLOCK |
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RESET button |
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Indication of remote controller model is on back.
OFF-TIMER button
ON-TIMER button
HR. button MIN. button (TIME SET button)
CLOCK SET button
VANE CONTROL button
3
3 SPECIFICATION
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Indoor model |
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MCF-A12WV - E1 |
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Function |
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Cooling |
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Power supply |
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Single phase |
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230V, 50Hz |
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Capacity Air flow (High/Med.W/LowW) |
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K /h |
678 /582W /474 W |
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Power outlet |
A |
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Electrical |
data |
Running current |
A |
0.26 |
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Power input |
W |
56 |
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Auxiliary heater |
A(kW) |
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Power factor |
% |
94 |
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Fan motor current |
A |
0.26 |
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Fan |
motor |
Model |
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" |
RB4V19-AC |
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YLW-BLU 32.7 BLU-BRN 44.4 |
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Winding |
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WHT-BLK 203.2 BLK-YLW 45.9 |
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resistance(at 20:) |
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BRN-RED 23.3 |
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Dimensions WOHOD |
mm |
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Weight |
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kg |
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Air direction |
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Special |
remarks |
Sound level (High/Med.W/LowW) |
dB |
44 /40W /34W |
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Fan speed |
(High/Med.W/LowW) |
rpm |
1,105 /970W / 820W |
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Fan speed |
regulator |
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Thermistor RT11(at 25:) |
k" |
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Thermistor RT12(at 25:) |
k" |
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Remote controller model |
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NOTE:Test conditions are based on ISO 5151.
Cooling : Indoor |
DB27°C |
WB19°C |
Outdoor |
DB35°C |
WB(24°C) |
Indoor-Outdoor piping length : 5m
WReference value
4
MCF-A18WV - E1 |
MCF-A24WV - E1 |
||
Cooling |
Cooling |
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Single phase |
Single phase |
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230V, 50Hz |
230V, 50Hz |
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780 / 636W / 492W |
840/ 744W / 642W |
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10 |
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0.30 |
0.36 |
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66 |
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80 |
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96 |
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97 |
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0.30 |
0.36 |
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RB4V25-AC |
RB4V36-DB |
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WHT-BLK 182.2 BLK-YLW 68.9 |
WHT-BLK 84 BLK-YLW 46.2 |
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YLW-BLU 47.5 BLU-BRN 31.5 |
YLW-BLU 37.2 BLU-BRN 45.2 |
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BRN-RED 22.9 |
BRN-RED 13.6 |
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1,100O650O180 |
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25 |
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5 |
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48 /45W / 42W |
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46 /41W / 36W |
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1,240 /1,060W / 845W |
1,320 /1,190W / 1,060W |
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3 |
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10 |
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10 |
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KG04D |
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4 
NOISE CRITERIA CURVES
NOISE CRITERIA CURVES
MCF-A12WV - E1
FAN SPEED SPL(dB(A)) |
LINE |
High 44
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:
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90 |
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BAR |
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MICRO |
80 |
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dB re 0.0002 |
70 |
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NC-70 |
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60 |
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LEVEL, |
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NC-60 |
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50 |
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PRESSURE |
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NC-50 |
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40 |
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NC-40 |
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SOUND |
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30 |
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NC-30 |
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BAND |
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20 |
APPROXIMATE |
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OCTAVE |
THRESHOLD OF |
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HEARING FOR |
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NC-20 |
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CONTINUOUS |
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10 |
NOISE |
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63 |
125 |
250 |
500 |
1000 |
2000 |
4000 |
8000 |
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BAND CENTER FREQUENCIES, Hz
MCF-A24WV - E1
FAN SPEED SPL(dB(A)) |
LINE |
High 48
MCF-A18WV - E1
FAN SPEED SPL(dB(A)) |
LINE |
High 46
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:
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90 |
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BAR |
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MICRO |
80 |
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dB re 0.0002 |
70 |
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NC-70 |
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60 |
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LEVEL, |
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NC-60 |
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50 |
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PRESSURE |
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NC-50 |
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40 |
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NC-40 |
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SOUND |
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30 |
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NC-30 |
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BAND |
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20 |
APPROXIMATE |
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OCTAVE |
THRESHOLD OF |
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HEARING FOR |
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NC-20 |
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CONTINUOUS |
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10 |
NOISE |
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63 |
125 |
250 |
500 |
1000 |
2000 |
4000 |
8000 |
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BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:
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90 |
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BAR |
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MICRO |
80 |
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dB re 0.0002 |
70 |
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NC-70 |
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60 |
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LEVEL, |
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NC-60 |
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PRESSURE |
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NC-50 |
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40 |
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NC-40 |
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SOUND |
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30 |
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NC-30 |
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BAND |
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20 |
APPROXIMATE |
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OCTAVE |
THRESHOLD OF |
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NC-20 |
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10 |
NOISE |
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125 |
250 |
500 |
1000 |
2000 |
4000 |
8000 |
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BAND CENTER FREQUENCIES, Hz
INDOOR UNIT
MICROPHONE
WALL
1m
1m
5
5 
OUTLINES AND DIMENSIONS
MCF-A12WV |
- E1 |
MCF-A24WV - E1 |
Unit: mm |
MCF-A18WV |
- E1 |
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INDOOR UNIT
(When installed on the floor)
114
80.8 |
906 |
16 |
112.8 |
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500mm or more |
500mm or more |
500mm |
(When installed on the ceiling) |
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or |
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more |
moreor1000mm |
500mm or more |
650 |
616.5 |
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170 |
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42.5 |
1100
58 |
19 |
Liquid line [6.35
162
Wireless remote controller
93
77 |
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113 |
143 |
180
Gas line
[12.7 (MCF-A12/A18WV) [15.88 (MCF-A24WV)
6 
WIRING DIAGRAM
MCF-A12WV - E1 |
MCF-A18WV - E1 |
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MCF-A24WV - E1 |
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INDOOR UNIT |
TB1 |
MODELS WIRING DIAGRAM |
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PE |
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GRN/YLW |
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POWER |
N |
BLU |
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SUPPLY |
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1 |
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CN |
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~/N 230V |
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HIC1 |
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2 |
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112 |
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50Hz |
L |
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3 |
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TO |
1TB2 |
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CN201 |
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NR11 |
LDCOM |
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BRN |
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TAB12 |
C11 LDC12 |
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CIRCUIT BREAKER |
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LDC11 |
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OUTDOOR |
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BLK |
CN202 |
TRANS |
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LDFH |
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UNIT |
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1 |
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X144 |
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2 |
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F11 |
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LDFM |
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CONNECTING |
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2 |
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SR143 LDFL |
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WHT |
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12V |
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CN |
CN |
CN |
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SR142 |
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101 |
113 |
151 ELECTRONIC CONTROL P.C BOARD |
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5 |
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6 |
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4 |
5 |
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5 |
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MV |
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REMOTE |
DISP/ |
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SW/THERMO |
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RECEIVER |
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CONTROLLER |
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P.C.BOARD |
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P.C.BOARD |
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RT11 |
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2 2
RT12
WHT 1 WHT
ORN 2 ORN
RED 3 RED
BLK 4 BLK MF YLW 5 YLW
BLU 6 BLU 7 BRN
8
GRN/YLW
SYMBOL |
NAME |
SYMBOL |
NAME |
SYMBOL |
NAME |
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C11 |
INDOOR FAN CAPACITOR |
MV |
VANE MOTOR |
SR142~SR143 |
SOLID STATE RELAY |
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F11 |
FUSE (3.15A) |
NR11 |
VARISTOR |
TB1, TB2 |
TERMINAL BLOCK |
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|
HIC1 |
DC/DC CONVERTER |
RT11 |
ROOM TEMPERATURE THERMISTOR |
X144 |
RELAY |
MF |
INDOOR FAN MOTOR(INNER FUSE) |
RT12 |
INDOOR COIL THERMISTOR |
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NOTE:1. About the outdoor side electric wiring, refer to the outdoor unit electric wiring diagram for servicing.
2.Use copper conductors only.(For field wiring)
3.Symbols below indicate;
:Terminal block, 
: Connector
6
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