Troubleshooting
Samsung Electronics 4-23
Indoor unit display
X (Operation)
(Defrost)
(Timer)
(Filter)
Symptom
Thermal Fuse Open Error
Failure
Check the connection of the CN140 wire.
Check the connection of the terminal block.
(Temperature rise by untightening a screw/ Termal Fuse open
5IFSNBM'VTF0QFO&SSPS
E198 occurs.
Measure both ends of connector
connected the TERMINAL BLOCK.
Replace the MAIN PBA.
No
No
Yes
Is the CN140 connector of
PCB between wire correctly
connected?
Paragraph (Short) Has the connector ends?
Re-operation after the connector.
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