Troubleshooting Tips And Home Maintenance - Friedrich WallMaster WS Instrucciones De Instalación Y Funcionamiento

Troubleshooting tips and home maintenance

Won't cool
If the unit operates, but won't cool, determine if the controls
are properly set. Wait three minutes before setting the ther-
mo stat to a cooler position in order to check control settings.
Check the fi lter and clean it thoroughly, if needed. Check
to see if the vent door is closed. Check to see if the chassis
seal gasket is properly installed (refer to page 12 for seal
gasket installalation).
Won't heat (for heat/cool models only)
If the unit operates, but won't heat, determine if the control
settings are correct. Adjust the ther mo stat to a warmer position
to determine if it operates. Also, check the fi lter and clean it
thor ough ly, if needed.
Odors in heating (for heat/cool models only)
You may notice a smoke odor the fi rst time the heater element
comes on. This is common in any type of heat system when
fi rst turned on for the winter. The odor comes from dust and
other particles that accumulate during the warm months. The
odor will dissipate quickly.
Won't run
If the unit fails to operate, check to see if the power cord
is fi rmly plugged in. Check for blown fuses, tripped circuit
breakers or a tripped LCDI Device (Refer to page 7 for LCDI
Things to know about a WallMaster heat pump
During the heat pump operation, you may notice some functions that did not occur when the unit was used for cooling:
1. It is common for ice to form on the outdoor coil of your WallMaster Heat Pump. The ice forms due to moisture in the
outdoor air passing over cold (below freezing) coil surfaces.
2. When the outdoor coil forms ice, your heat pump will automatically initiate a defrost. The com pres sor will stop and
the fan will continue to run. The electric heat will be turned on to continue warming the room while the outdoor air
defrosts the outdoor coil. After the defrost is completed, the unit will automatically return to the heat pump mode.
3. It is normal for vapor (steam) to rise from the outdoor coil during the defrost. This is similar to expelling warm breath
on a cold morning.
4. If the outdoor temperature drops below 43°F during heat pump op er a tion, your WallMaster Heat Pump will au to mat i cal ly
switch to electric re sis tance heat and will continue to operate in this mode as long as
at 43°F or below.
8
920-007-11 (8-05)
reset instructions). Restore the circuit breaker or replace the
blown fuse with a proper size "TIME-DELAY" fuse. The
proper fuse size is shown on pages 2 and 5 in these instructions.
After restoring the current supply to the unit, wait three minutes
before restarting.
Frosting of the indoor coil
Certain operating conditions may produce indoor coil frost.
During the cooling operation, a dirty fi lter or restricted air
distribution in combination with cool, damp weather could
cause such an occurrence. Should the indoor coil frost over
while cooling, set the control to FAN and keep it running
until the frost on the coil is gone. Setting the ther mo stat to
a slightly warmer position will probably keep the coil from
frosting over again.
Cleaning the decorative front
The decorative front of your Friedrich room air conditioner, as
well as the complete cabinet, may be cleaned with warm water
and mild detergent. Under adverse operating con di tions, the
indoor and outdoor coils and base pan may require periodic
cleaning to maintain ef fi cient operation. Your Friedrich dealer
should be called when this service is required.
the outdoor tem per a ture remains