AL
Costway General Alarm (Temperature or Door)

Display shows AL and an audible alarm sounds intermittently.

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Possible Causes

Door left open too long, High temperature condition, Faulty door switch not detecting closure

How to Fix / Troubleshooting

Safety: No internal electrical work is needed for basic checks. Unplug the unit before testing switches with tools.

Steps to clear AL:

  • Confirm door closure: Close the door firmly and ensure nothing is blocking it. Check that the gasket contacts the cabinet all around.
  • Check door switch: Locate the door switch (usually at the top or side of the opening). Press it by hand; the interior light should turn off and the alarm may silence.
  • Clean the switch area: Wipe away frost or debris that may prevent the switch from fully depressing.
  • Test the switch (if needed): Unplug the freezer, remove the switch (often held by a clip or screw), and test continuity with a multimeter while pressing and releasing the button. Replace if it does not change state.
  • Allow temperature to recover: If the door was left open, give the freezer several hours to cool back down. The alarm will usually clear automatically.

Note: If AL persists with a closed door and good temperature, the control board or sensor may be misreading and require professional diagnosis.

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Repair Difficulty

Easy 2/5

Required Part

Door Switch
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