Troubleshooting Sheet

4
Issue Possible Causes
The indoor unit
makes noises
A rushing air sound may occur when the louver resets its
position.
Due to expansion and contraction of the unit's plastic parts, a
squeaking sound may occur after the unit is run in HEAT mode.
Both the indoor
and outdoor units
make noises
Low hissing sound during operation: This is normal and is
caused by refrigerant gas flowing through both the indoor and
outdoor units.
Low hissing sound when the system starts, has just stopped
running, or is defrosting: This is normal and is caused by
the refrigerant gas stopping or changing direction.
Squeaking sound: Normal expansion and contraction of
plastic and metal parts caused by temperature changes during
operation can cause squeaking noises.
The outdoor unit
makes noises
The unit will make dierent sounds based on its current
operating mode.
Dust is emitted
from either the
indoor or outdoor
unit
The unit may accumulate dust during extended periods of
non-use, which will be emitted when the unit is turned on.
This can be mitigated by covering the unit during long periods
of inactivity.
The unit emits a
bad odor
The unit may absorb odors from the environment (such as
furniture, cooking, cigarettes, etc.) which will be emitted
during operation.
The unit’s filters have become moldy and should be cleaned.
The fan of the
outdoor unit does
not operate
During operation, the fan speed is controlled to optimize
product operation.
Operation is
erratic or
unpredictable or
the unit is
unresponsive
Interference from cell phone towers and remote boosters may
cause the unit to malfunction.
In this case, try the following:
• Disconnect the power, then reconnect.
• Press the ON/OFF button on the remote control to restart operation.
NOTE: If the problem persists, contact a local dealer or your nearest customer service center.
Provide them with a detailed description of the unit malfunction, as well as, your model number.