LO
Caple Low Temperature / Thermostat Calibration Fault

Display shows LO or very low temperature reading; food may be over‑frozen and ice forming on packaging

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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

Thermostat or temperature sensor out of calibration, Control PCB output stuck in fast‑freeze mode, Incorrect user setting (set too low), Faulty relay on PCB stuck closed

How to Fix / Troubleshooting

Safety: Basic checks can be done with power on; unplug before accessing internal components.

Steps to address LO / over‑cooling:

  • 1. Check user settings: Verify that the set temperature is appropriate (around −18°C) and that fast‑freeze mode is not permanently enabled.
  • 2. Power reset: Turn the freezer off at the mains for 5–10 minutes, then back on. Re‑enter desired settings.
  • 3. Verify with a thermometer: Place a separate thermometer inside to confirm actual temperature versus display.
  • 4. Inspect temperature sensor: If the display shows an unrealistically low value, the cabinet NTC sensor may be faulty. Test and replace as described for E1.
  • 5. PCB relay check: If the compressor runs almost continuously regardless of temperature, the compressor relay on the PCB may be stuck. PCB replacement is usually required.

Note: Persistent over‑cooling can increase energy use and cause excessive frost; address promptly.

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Repair Difficulty

Medium 3/5

Required Part

Cabinet NTC Temperature Sensor
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