21
Troubleshooting
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troubleSHootIng
Issue
Cause
Corrective Action
The air conditioner does not generate
warm air.
When heating mode is started.
This is normal operation for the unit. During start-up, the unit is
preparing warm air.
Vane is almost closed and air flow does
not come out.
Outdoor unit is operating, but no warm
air is generating.
Outdoor unit is in defrost mode at the
time.
• In heating mode, ice/frost is built up on the coils when the
outside temperature falls.
• Defrost mode removes a layer of frost from the coil.
• Wait until this operation is completed. It takes approximately
15 minutes.
Outdoor temperature is too low.
Heating capacity of the unit may not by sufficient to effectively
warm air.
The air conditioner stops during operation.
The air conditioner suddenly turns off.
• Check to see if timer function has been set to turn off at a
designated time.
• Check timer settings and make adjustments as needed.
Power failure has occurred during air
conditioner operation.
• Auto restart is the default setting and the system is rebooting.
• If you experience frequent power failures, it is helpful to verify
that the system is set to auto restart so the unit can power up
quickly.
Air conditioner is still operating, even after
being shut down.
Auto clean mode is in operation.
This function removes the rest of the
moisture from the indoor unit.
Wait until the auto clean mode has finished and then turn off
this feature.
Unable to adjust fan speed.
The auto operation, jet cool or heat
or dehumidifying mode is selected.
These modes do not allow you to adjust the fan speed. Change
the indoor unit mode in order to adjust the fan speed.
Unable to adjust the temperature.
Air circulation or jet cool/jet heat mode
is selected.
These modes do not allow you to adjust the temperature
Change the indoor unit mode in order to adjust the
temperature..
Mist is discharge from the air outlet of the
indoor unit.
Cooled air from the indoor unit can form
a mist.
If the room temperature is lowered the mist will stop forming.
Water leaks from the outdoor unit.
Cooled air from the air conditioner is
forming mist.
Install a drain hose under the base pan and contact the
installing contractor.
Table 7: Single Zone Mega Wall Mount System Troubleshooting (Continued)
