Troubleshooting Tips - Midea Keystone KSTAT12-1A Manual Del Usuario

Before calling for service, review this list. It may save you time and expense. This list includes common
occurrences that are not the result of defective workman-ship or materials in this appliance.
Problem
Air conditioner
does not start
Air from unit does
not feel cold
enough
Air conditioner
cooling, but room
is too warm- ice
forming on cooling
coil behind
decorative front.
Air conditioner
cooling, but room
is too warm- NO
ice forming on
cooling coil behind
decorative front.
Air conditioner turns on
and off rapidly
Noise when unit is
cooling
Water dripping
INSIDE when
unit is cooling.

TROUBLESHOOTING TIPS

Solution
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.
Control is OFF. Turn Control ON and set to desired setting.
Room temperature below 17 C(62 F). Cooling may not occur until room temperature
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rises above 17 C(62 F).
Temperature sensing element touching cold coil, located behind air filter. Straighten
tube away from coil.
Reset to a Lower temperature.
Compressor shut-off by changing modes. Wait approximately 3 minutes and listen for
compressor to restart when set in the COOL mode.
Outdoor temperature below 17 C(62 F). 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.
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.
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.
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.
Improper installation. Tilt air conditioner slightly to the outside to allow water drainage.
Refer to installation instructions - check with installer.
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