Proline
False Alarm Due to Door Switch or Sensor Error
Alarm beeps intermittently even though the temperature appears normal and the door is closed.
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Possible Causes
Sticky or misaligned door switch, Intermittent cabinet sensor connection, Control PCB alarm circuit fault, Door not fully closing due to obstruction
How to Fix / Troubleshooting
Steps to stop false alarms:
- 1. Confirm door closure: Check that nothing is obstructing the door and that the gasket is sealing all around.
- 2. Test door switch: Press the switch repeatedly to ensure it moves freely. Replace if it sticks or fails continuity tests.
- 3. Inspect sensor wiring: Check cabinet sensor connections at the control board for looseness.
- 4. Reset control: Unplug the freezer for 5–10 minutes to reset the alarm logic.
Note: If alarms persist despite correct operation, the main control PCB may be faulty.
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Repair Difficulty
Easy
2/5
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