Pioneer Inverter+ WAS Series Owner's Manual page 16

Troubleshooting
When troubles occur, please check the following points before contacting a repair company.
Problem
Poor Cooling
Performance
Possible Causes
Temperature setting may
be higher than ambient
room temperature
The heat exchanger on the
indoor or outdoor unit is
dirty
The air filter is dirty
The air inlet or outlet of
either unit is blocked
Doors and windows are
open
Excessive heat is generated
by sunlight
Too many sources of heat
in the room (people,
computers, electronics,
etc.)
Low refrigerant due to leak
or long-term use
SILENCE function is
activated(optional function)
Solution
Lower the temperature setting
Clean the affected heat exchanger
Remove the filter and clean it
according to instructions
Turn the unit off, remove the
obstruction and turn it back on
Make sure that all doors and
windows are closed while
operating the unit
Close windows and curtains
during periods of high heat or
bright sunshine
Reduce amount of heat sources
Check for leaks, re-seal if
necessary and top off refrigerant
SILENCE function can lower
product performance by reducing
operating frequency. Turn off
SILENCE function.
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