E12
Caple
Low‑Voltage Power Supply Fault on Control PCB
E12 error; interior light or auxiliary features may malfunction
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Failed low‑voltage regulator on PCB, Short circuit on low‑voltage side (e.g. LED light strip), Damaged wiring harness causing low‑voltage short, Burnt PCB track
How to Fix / Troubleshooting
Safety warning: Unplug the freezer before opening any control housings. Do not touch exposed live parts.
Steps to address E12:
- 1. Observe symptoms: Note whether the display, interior light, or fans are affected. This helps identify which low‑voltage circuit is failing.
- 2. Inspect LED light assembly: Remove the light cover and check for signs of burning or water ingress. Disconnect the light temporarily and see if E12 clears after a power reset.
- 3. Check harnesses: Look for crushed or abraded low‑voltage cables, especially around hinges and internal panels.
- 4. Access PCB: Remove the PCB cover and inspect for burnt components or tracks in the low‑voltage section.
- 5. Replace faulty module: If the LED module is shorted, replace it. If the PCB low‑voltage supply is damaged, replace the main control PCB.
Note: Component‑level repair of the PCB is not recommended unless performed by an electronics specialist.
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Repair Difficulty
Hard
4/5
Required Part
Main Control PCB
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