Carrier AR TXHQB Series Owner's Manual & Installation Manual page 20

User manual/
Installation manual
Issue
The outdoor unit makes
noises
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
NOTE:
Troubleshooting
Problem
Poor Cooling
Performance
17
Possible Causes
malfunction.
Press ON/OFF button on remote control to restart operation.
Possible Causes
Temperature setting may be higher than
ambient room temperature
The heat exchanger on the indoor or
outdoor unit is dirty
The air inlet or outlet of either unit is
blocked
Too many sources of heat in the room
use
Solution
Clean the affected heat exchanger
to instructions
and turn it back on
periods of high heat or bright sunshine
Reduce amount of heat sources
Check for leaks, re-seal if necessary
and top off refrigerant
performance by reducing operating
frequency. Turn off SILENCE function.