What Fault 8 Means
Fault 8 is Fault 7's mirror image — the defrost sensor is reading below 660 ohms, a short-circuit condition rather than an open one, again pointing to a failed sensor or damaged wiring near the evaporator.
Common Causes of Fault 8
- The defrost sensor has shorted
- Damage to the defrost sensor wiring
- Moisture getting into the sensor connector near the evaporator
🔧 One Safe Check You Can Try
There's no do-it-yourself check for this — resistance testing needs a multimeter and a fully de-energized unit, which is a technician's job.
⚠ Why You Shouldn't Go Further Than That
- Because it sits right at the evaporator, this sensor is tangled up with refrigerant lines that a homeowner has no business touching.
- A sensor replaced on the wrong assumption leaves the actual defrost-timing problem unresolved, and the part gets wasted while ice keeps accumulating.
- With frost built up, those panels are frozen into place, and forcing them free tears out the sensor leads that are clipped to the back of them.
- Even a good replacement sensor will misread if it isn't seated in exactly the same spot as the original.
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.