Concealed Duct Installation Manual

DURASTAR.COM
23
ISSUE POSSIBLE CAUSES
Both the indoor unit and
outdoor unit make noises
Low hissing sound during operation: This is normal and is caused
by refrigerant gas flowing through both indoor and outdoor units.
Low hissing sound when the system starts, has just stopped
running, or is defrosting: This noise 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 different 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
operations.
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,
unpredictable, or 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 ON/OFF button on remote control to restart operation.
NOTE
If 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.