Caple Door or Temperature Alarm Nuisance Trigger

Alarm beeping frequently without obvious reason, sometimes with flashing display

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Possible Causes

Door not fully closed, Faulty door switch, Temperature sensor reading unstable, Control PCB alarm circuit oversensitive

How to Fix / Troubleshooting

Safety: No internal work is needed to silence the alarm temporarily, but unplug before accessing switches or boards.

Steps to stop nuisance alarms:

  • Check door closure: Ensure the door is fully closed and not obstructed by shelves or bottles.
  • Inspect door switch: Test the door switch or reed sensor as described in the always-on light fault; replace the door switch if it does not reliably change state.
  • Monitor temperature: Use a thermometer to confirm that the cabinet is actually within the set range. If not, investigate cooling performance.
  • Sensor stability: If the temperature fluctuates rapidly on the display, test and replace the cabinet NTC sensor if necessary.
  • Control PCB: Persistent false alarms with correct sensors and switch may indicate a faulty main control PCB.

Tip: Some models allow alarm muting via the control panel; consult the user manual for the mute procedure.

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Repair Difficulty

Easy 2/5

Required Part

Door Switch / Reed Switch
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