Troubleshooting
Samsung Electronics 4-7
Indoor unit display
X (Operation) X (Defrost)
(Timer)
(Fan)
(Filter)
Wire remote controller display
E198
Symptom
Error of Terminal Block's Terminal Fuse(Open)
Failure
Fuse open
4-2-4 Terminal Block's Terminal Fuse(Open)
No
No
Yes
Is the resistance 0Ω ?
Yes
Is the wire connector
disconnected from the terminal block and
PCB?(CN140)
Replace the PCB and restart the unit
Connect the connector to
PCB and terminal block before
restart the unit
Replace the Terminal Block and
restart the unit
Remove the wire connector from the PCB
and measure the resistance between two
terminals
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