Carrier 42QHC009D8S Series Service Manual

41
18.3.2 For the super-slim cassette with up-down panel
18.3.2.1 Communication error between indoor unit and up-down panel
F0 Displayed
F0 Displayed
Communication failure between
indoor unit and up-down panel
Communication failure between
indoor unit and up-down panel
Check the wire connection
between up-down panel and
indoor unit, is it right?
Check the wire connection
between up-down panel and
indoor unit, is it right?
Correct the connection
Correct the connection No
Yes
Replace the indoor main PCB
Replace the indoor main PCB
No
Replace the up-down panel
Replace the up-down panel
18.3.2.2 Up-down panel is defective
F1 Displayed
F1 Displayed
Up-down panel is defective
Up-down panel is defective
Retry if panel can up and
down normally?
Retry if panel can up and
down normally?
Check the wiring of
left and right sensors
Check the wiring of
left and right sensors
No
No
The up-down panel is defective.
replace it
The up-down panel is defective.
replace it
Yes
No
If panel can move slightly, power
off, then restart the unit 2 minutes
later. If the error still exists?
If panel can move slightly, power
off, then restart the unit 2 minutes
later. If the error still exists?
No
If panel can not move
slightly, check the wiring
of louver motors
If panel can not move
slightly, check the wiring
of louver motors
Yes
Reconnect
Reconnect
Replace the louver
motors
Replace the louver
motors
Reconnect
Reconnect
No
No
No
F7
F8

Carrier 42QHC009D8S Series Specifications

General

Brand	Carrier
Model	42QHC009D8S Series
Category	Air Conditioner
Language	English