MOOVAIR TM08CEM9115S, Service Manual

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10
5 Troubleshooting
In general, possible trouble is classified in three kinds. One is called Starting Failure which is caused from an
electrical defect, another is ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper
application, and the other is called the Structure Damage.
5.1 Troubleshooting
Problem Solution
Air conditioner does not
start
Wall plug disconnected. Push plug firmly into wall outlet.
House fuse blown or circuit breaker tripped. Replace fuse with time delay type or reset circuit
breaker.
Plug Current Device Tripped. Press the RESET button.
Power is OFF. Turn power ON.
Air from unit does not feel
cold enough
Room temperature below 62
℉
(17
℃
). Cooling may not occur until room temperature rises above
62
℉
(17
℃
).
Temperature sensing element touching cold coil, located behind air filter. Straighten tube away
from coil.
Set to a Lower temperature.
Compressor stopped when changing modes. Wait for 3 minutes after set to the COOL mode.
Air conditioner cooling, but
room is too warm- ice
forming on cooling coil
behind decorative front.
Outdoor temperature below 64
℉
(18
℃
). To defrost the coil, set FAN ONLY mode.
Air filter may be dirty. Clean filter. Refer to Care and Cleaning section. To defrost, set to FAN
ONLY mode.
Thermostat set too cold for night-time cooling. To defrost the coil, set to FAN ONLY mode. Then,
set temperature to a Higher setting.
Air conditioner cooling, but
room is too warm- NO ice
forming on cooling coil
behind decorative front.
Dirty air filter- air restricted. Clean air filter. Refer to Care and Cleaning section.
Temperature is set too High, set temperature to a Lower setting.
Air directional louvers positioned improperly. Position louvers for better air distribution.
Front of units is blocked by drapes, blinds, furniture, etc. - restricts air distribution. Clear blockage
in front of unit.
Doors/ windows/registers, etc. Open- cold air escapes. Close doors, windows, registers.
Unit recently turned on in hot room. Allow additional time to remove. Stored heat from walls,
ceiling, floor and furniture.
Air conditioner turns on and
off rapidly
Dirty air filter- air restricted. Clean air filter
Outside temperature extremely hot. Set FAN speed to a Higher setting to bring air past cooling
coils more frequently.
Noise when unit is cooling
Air movement sound. This is normal. If too loud, set to a slower FAN setting.
Window vibration - poor installation. Refer to installation instructions or check with installer.
Water dripping INSIDE
when unit is cooling.
Improper installation. Tilt air conditioner slightly to the outside to allow water drainage. Refer to
installation instructions - check with installer.
Water dripping OUTSIDE
when unit is cooling.
Unit removing large quantity of moisture from humid room. This is normal during excessively
humid days.
Remote Sensing
Deactivating Prematurely
(some models)
Remote control not located within range. Place remote control within 20 feet & 180°, radius of the
front of the unit.
Remote control signal obstructed. Remove obstruction.
Room too cold Set temperature too low. Increase set temperature.