Pioneer Inverter+ WAS Series Owner's Manual page 15

Issue
The indoor unit
makes noises
Both the indoor
unit and outdoor
unit make noises
The outdoor unit
makes noises
Dust is emitted
from either the
indoor or outdoor
unit
The unit emits a
bad odor
The fan of the
outdoor unit does
not operate
Operation
is erratic,
unpredictable,
or unit is
unresponsive
If problem persists, contact your installer or your nearest customer service
NOTE:
center. Pro vide them with a detailed description of the unit malfunction as
well as your model number.
 
Page 15
Possible Causes
A rushing air sound may occur when the louver resets its
position.
A squeaking sound may occur after running the unit in HEAT
mode due to expansion and contraction of the unit' s plastic
parts.
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 unit will operate at different sound levels based on its
current operating mode and loading.
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 may absorb odors from the environment (such as
furniture, cooking, cigarettes, etc.) which will be emitted
during operation. Heat exchangers may need to be cleaned.
The unit' s filters have become moldy and should be cleaned.
During the defrost mode, the outdoor fan will be stopped.
Otherwise check for ice or other debris blocking the fan.
Interference from cell phone towers and remote boosters may
cause the unit to malfunction.
In this case, try the following:
Disconnect the power, reconnect by resetting the breaker.
•
Press ON/OFF button on remote control to restart operation.
•