Samsung · Air Conditioning
The thermal fuse in the indoor unit is open, indicating a potential overheating condition or a fuse malfunction.
Click steps to track your progress.
Turn off the air conditioning unit at the main power.
Check the wiring connector of the thermal fuse for a secure connection.
If the thermal fuse is disconnected or faulty, it may need to be replaced. If the Terminal Box temperature rise fuse is disconnected, replace the PCB.