Internal Pcb Communication Error Of The Outdoor Unit C-Box - Samsung AM072FXVAFH series Service Manual

Troubleshooting

4-4-7 Internal PCB Communication error of the Outdoor Unit C-Box

Outdoor unit display
Indoorunit display
※ ● : ON ◑ : Flash ×: OFF
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. How to check
E206 C001
Connection wire of
Hub PCB/Main PCB did confirmation?
(Verify the broken wire)
Replace Hub PCB
E206 C002
Lighting of Fan PCB LD41 did confirmation?
Is Fan PCB CN13 connector accurately
Replace Fan PCB
(Fan PCB TX part : Breakage)
4-36
( C001 - C004 ) - some boards of outdoor unit are not communicating
Duct, Cassette (1/2 Way),Console, Celing
Operation Defrost Timer Fan
× × ◑ ◑
Yes
Yes
connected?
Yes
Cassette (4/Mini4 Way)
Filter/MPI Operation Defrost Timer
× ◑ ◑
×
No
No
No
Wall-mounted (NeoForte)
Filter Operation Timer Turbo
× × ◑ ◑
Replace Connection wire
Check the connection status
(CN12 connector)
Fan PCB CN13 connection
Samsung Electronics