Troubleshooting
Samsung Electronics 4-23
4-3-7 Internal PCB Communication error of the Outdoor Unit C-Box
1.
Cause of problem
When happen, refer to how to check E205.
Replace the FAN PCB
HUB PCB replace if E206 C001 is continued..
Check the wire connection status.
Replace the NVERETER PCB.
Check the wire connection status.
No
No
No
No
Yes
Yes
Yes
Yes
Does E205 occur after 1 minute?
Is INVERETER PCB CN13 connector and
EMI PCB CN23 connector accurately
connected?
Does INVERETER PCB LD22 (LED) blink?
Is INVERETER PCB CN31, CN91
connector and FAN PCB CN501 connector
accurately connected?
E206 C001
E206 C002
Outdoor unit
display
(C001 ~ C004)
- some boards of outdoor unit are not communicating
Indoorunit
display
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)
Operation Defrost Timer Fan Filter/MPI Operation Defrost Timer Filter Operation Timer Turbo
××◑◑× ×◑◑××◑◑
※ ●: 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
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