Samsung AM072FXVAFH series - Internal PCB Communication Error of the Outdoor Unit C-Box

Troubleshooting
4-36 Samsung Electronics
4-4-7 Internal PCB Communication error of the Outdoor Unit C-Box
Outdoor unit display
( C001 - C004 ) - some boards of outdoor unit are not communicating
Indoorunit display
Judgment Method
 PCB does not respond to the invoked Main PCB
Cause of problem
 C-Box internal Inverter PCB, Fan PCB, Hub PCB def ective
1. How to check
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
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)
Operation
Defrost TimerFan Filter/MPI
Operation
Defrost Timer Filter
Operation
TimerTurbo
××◑◑
×
×◑◑××◑◑
※ ● : ON ◑ : Flash ×: OFF