16
Section 6: Maintenance and Trouble Shooting
(continued)
(3) Set the filter net and the air return grill to the original place. (Fig. 27).
(4) Clean up the outer unit with a soft, damp rag (Fig. 28). To protect the paint-coat of the unit, do not use a rough sponge or
corrosive detergent.
6.2 Trouble Shooting
Figure 28
Figure 27
Malfunction
Code
Cause
Measures
Indoor ambient temperature sensor
P4 Ambient temperature sensor is
in open circuit or short circuit
Check or replace the ambient temperature sensor
Coil temperature sensor
P5 Coil temperature sensor is in
open circuit or short circuit
Check or replace the coil temperature sensor
Motor feedback signal
E0 Feedback wire is not inserted
well or Fan motor failure
Check the feedback wire or replace the motor
