Freezer not cooling at all; interior light works but temperature remains warm

Safety warning: Unplug the freezer before accessing the compressor compartment. Do not tamper with sealed refrigerant lines.

Steps to diagnose:

• 1. Listen for compressor: With the unit plugged in, you should hear a low hum when the compressor runs. Repeated clicking or silence suggests a start or control issue.
• 2. Check basic power: Confirm the socket works by testing another appliance. Ensure any wall switch is on.
• 3. Access rear compartment: Remove the lower rear panel to expose the compressor, start relay/PTC, and capacitor.
• 4. Inspect start components: Look for burnt or cracked relay housing or capacitor. Ensure all connectors are firmly seated.
• 5. Replace suspect start relay/capacitor: If visibly damaged or if the compressor attempts to start then clicks off, replace the start relay/PTC and capacitor with Caple‑specified parts.
• 6. PCB output check: If you are competent with electrics, you can test whether the PCB sends mains voltage to the compressor terminals when cooling is demanded. No output indicates a faulty PCB.

When to call a technician: If new start components do not restore operation, the compressor itself or sealed system may be faulty and requires a refrigeration engineer.