Carrier 12000 Manuel D'installation page 15

Issue
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
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.
Troubleshooting
When troubles occur, please check the following points before contacting a repair company.
Problem 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
Poor Cooling
Performance
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
Possible Causes
The unit will make different sounds based on its current operating mode.
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 operations.
The unit's filters have become moldy and should be cleaned.
During operation, the fan speed is controlled to optimize product operation.
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
Page 15-GB