OWNER’S MANUAL -
REG-81M, 123M
Owner’s Manual
Room Air Conditioner with R-410A
Heat Controller, Inc.
17
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.
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.
TROUBLESHOOTING TIPS
Problem
Air from unit does
not feel cold
enough
Reset to a Lower temperature.
Room temperature below 17 C(62 F). Cooling may not occur until room temperature
rises above 17 C(62 F).
Thermostat set too cold for night-time cooling. To defrost the coil, set to FAN ONLY
mode. Then, set temperature to a Higher setting.
Temperature sensing element touching cold coil, located behind air filter. Straighten
tube away from coil.
Air filter may be dirty. Clean filter. Refer to Care and Cleaning section. To defrost,
set to FAN ONLY mode.
Dirty air filter- air restricted. Clean air filter. Refer to Care and Cleaning section.
Unit recently turned on in hot room. Allow additional time to remove Stored heat from
walls, ceiling, floor and furniture.
Control is OFF. Turn Control ON and set to desired setting.
O
O
O
O
Air conditioner
cooling, but room
is too warm- ice
forming on cooling
coil behind
decorative front.
Outdoor temperature below 18 C(64 F). To defrost the coil, set FAN ONLY mode.
O
O
Air conditioner
cooling, but room
is too warm- NO
ice forming on
cooling coil behind
decorative front.
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.
Compressor shut-off by changing modes. Wait approximately 3 minutes and listen for
compressor to restart when set in the COOL mode.
Air conditioner turns on
and off rapidly
Noise when unit is
cooling
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.
Dirty air filter- air restricted. Clean air filter.
Air movement sound. This is normal . If too loud, set to a slower FAN setting.
Outside temperature extremely hot. Set FAN speed to a Higher setting to bring air past
cooling coils more frequently.
Window vibration - poor installation. Refer to installation instructions or check with installer.
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the rear/outside to allow water drainage.
Blown fuse or circuit breaker has tripped. Replace fuse with time delay type of reset
circuit breaker.
Current device has tripped on plug. Press the RESET button.
Unit control is OFF. Turn control ON and set to desired setting.
Cooling may not occur until room temperature rises above 62°F (17°C), as unit will not
work below room air temperature of 62°F (17°C)
Temperature sensing element may be touching the coil, located behind air filter. Straight
-
en sensing tube away from coil.
Reset to a lower temperature set point on unit control.
When mode button is pressed, the compressor may shut off. Wait approximately 3 minutes
for compressor to turn on after time delay when in cool mode.
Outdoor temp. may be below 62°F (17°C). To defrost coil, set unit to FAN ONLY mode.
Air filter may be dirty, clean filter. Refer to Care and Cleaning section. To defrost, set unit to
FAN ONLY mode.
Thermostat set too cold for cooling. To defrost the coil, set unit to FAN ONLY mode. Then,
set temperature to a higher setting.
Dirty air filter/air restricted. Clean air filter and remove any obstacles blocking air flow.
Before calling for service, review this list. It may save you time and unnecessary expense. This list includes
common occurrences that are not the result of defective workman-ship or materials in this appliance.
Louvers positioned improperly. Position louvers for better air distribution. Ensure louvers are not closed.
faster.
Doors, windows, registers, etc., are open allowing air to escape. Close those open areas.
Front of units may be blocked by drapes, blinds, furniture, etc., restricting air distribution.
Clear blockage in front of unit.
move air past
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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.
