Carrier 40GVM Series User Manual

41
TROUBLESHOOTING CONTINUED
Eliminate the malfunction
Eliminate the malfunction
Eliminate the malfunction
Eliminate the malfunction
End
no
no
no
no
no
no
no
no
yes
yes
yes
yes
yes
yes
yes
yes
yes
All the indoor units show
communication malfunction
De-energize, check all signal and
power wiring connections
Connected correctly?
Reconnect according to
the wiring diagram
Connected correctly?
Reconnect according to
the wiring diagram
De-energize, check the wiring between the
outdoor main board and the filter board.
Is the wiring broken?
Replace the wire
Check power supply to outdoor
main board
Is the power supply correct?
Replace the filter board of
the outdoor unit
Resume communication?
Replace the outdoor
mainboard
Replace indoor
mainboard

Carrier 40GVM Series Specifications

General

Brand	Carrier
Model	40GVM Series
Category	Air Conditioner
Language	English