Carrier 42K User Manual

104
18. Troubleshooting
Solving steps for typical malfunction
(1) For indoor unit
a. Indoor air sensor is abnormal
b. Indoor coil sensor is abnormal
C. Outdoor coil sensor is abnormal
Indoor air sensor is abnormal
Whether the resistance of the air sensor is 10K
No
Replace indoor air sensor
Replace indoor PCB
Yes
Indoor coil sensor is abnormal
Whether the resistance of indoor coil sensor is
10K
No
Replace indoor coil sensor
Replace indoor PCB
Yes
Outdoor coil sensor is abnormal
Whether the resistance of outdoor coil sensor is
10K
No
Replace outdoor coil sensor
Replace indoor PCB
Yes

Carrier 42K Specifications

General

Brand	Carrier
Model	42K
Category	Heat Pump
Language	English