Troubleshooting
4-70
Samsung Electronics
4-4-27 Internal PCB Communication error of the Outdoor Unit C-Box
Outdoor unit display
Indoorunit display
×(Operation)
ስ
(Reservation)
ስ
(Blast) ×(Filter) ×(Defrost)
Judgment Method
∙ PCB does not respond to the invoked Main PCB
Cause of problem
∙ C-Box internal Inverter PCB, Fan PCB, Hub PCB defective
1. Cause of problem
Replace Hub PCB
Replace Fan PCB
(Fan PCB TX part : Breakage)
Replace Connection wire
Check the connection status
(CN12 connector)
Fan PCB CN13 connection
No
No
No
Yes
Yes
Yes
Connection wire of
Hub PCB/Main PCB did confirmation?
(Verify the broken wire)
Lighting of Fan PCB LD41 did confirmation?
Is Fan PCB CN13 connector accurately connected?
E206 C001
E206 C002