Communication Error Between Main Pcb And Inverter Pcb During Tracking - Samsung AVXCSH023/032/040CE Service Manual

4-4-18 Communication error between main PCB and inverter PCB during Tracking

Outdoor unit display
×(Operation)
Indoor unit display
• Communication error between main PCB and inverter PCB during
Criteria
• Refer the below
Cause of problem
1. How to check
Restart after turning off the power
Check if there is any communication error?
Check if the INVERTER PBA power on?
Check the connection between the
INVERTER PBA and MAIN PBA.
Change the PBA
Samsung Electronics
(Timer) (Fan)
Yes
Yes
Yes
×(Filter) ×(Defrost)
No
Service complete
No
Inspect M/C
No
Connect the connector
MAIN
(CN39)
INVERTER
Troubleshooting
CN70 CN71
4-112