LG LS120HEV1 Owner's Manual page 21

Table 7: Single Zone Mega Wall Mount System Troubleshooting (Continued)
Issue
The air conditioner does not generate
warm air.
The air conditioner stops during operation.
Air conditioner is still operating, even after
being shut down.
Unable to adjust fan speed.
Unable to adjust the temperature.
Mist discharges from the air outlet of the
indoor unit.
Water leaks from the outdoor unit.
Cause
When heating mode is started.
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.
Outdoor temperature is too low.
The air conditioner suddenly turns off.
Power failure has occurred during air
conditioner operation.
Auto clean mode is in operation.
This function removes the rest of the
moisture from the indoor unit.
The auto operation, jet cool or heat
or dehumidifying mode is selected.
Air circulation or jet cool/jet heat mode
is selected.
Cooled air from the indoor unit can form
a mist.
Cooled air from the air conditioner is
forming mist.
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TROUBLESHOOTING
Corrective Action
This is normal operation for the unit. During start-up, the unit is
preparing warm air.
• 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.
Heating capacity of the unit may not be sufficient to effectively
warm air.
• Check to see if timer function has been set to turn off at a
designated time.
• Check timer settings and make adjustments as needed.
• 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.
Wait until the auto clean mode has finished and then turn off
this feature.
These modes do not allow you to adjust the fan speed. Change
the indoor unit mode in order to adjust the fan speed.
These modes do not allow you to adjust the temperature
Change the indoor unit mode in order to adjust the
temperature..
If the room temperature is lowered, the mist will stop forming.
Install a drain hose under the base pan and contact the
installing contractor.
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