What Fault 23 Means
Fault 23 is raised on the same second PC probe when its resistance falls under 660 ohms. F&P annotates that as the sensor reading hot, which in practice means the circuit has shorted somewhere and is presenting the control system with a temperature the compartment has never seen.
Common Causes of Fault 23
- Water in the probe connector joining its two pins
- Insulation worn through where the lead crosses a bracket
- A probe that has failed to a short internally
🔧 One Safe Check You Can Try
Leave it to a technician, but do mention any recent water spill, hand defrost, or move of the appliance, since a shorted probe circuit usually has a physical cause somebody can point to.
⚠ Why You Shouldn't Go Further Than That
- Isolate the cabinet at the outlet first - the loom carrying this probe shares its route with mains wiring and the two are not obvious apart.
- A falsely hot reading makes the control system cool that zone hard, so leaving it running risks freezing whatever is stored there.
- Drying a wet connector is not a repair unless the path the water took has been found and closed off.
- These connector shells grip by a plastic latch that goes brittle in the cold, and a latch broken on removal will not hold the plug seated afterwards.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.