Hotpoint Washer Error Code E20

E20 on a Hotpoint washer indicates a thermistor fault, which is a failure in the temperature sensor circuit. The power module monitors the thermistor's resistance to track water temperature, and E20 is triggered when that signal is missing or out of range. The fault may lie in the thermistor itself, the connecting plug, the wiring harness, or the power module.

A reset may temporarily clear the E20 code, but if the underlying fault in the thermistor circuit is still present, the error will return as soon as the washer attempts to monitor temperature again. A reset is useful for confirming whether the fault is intermittent, but it is not a fix. The thermistor, connector, and wiring should be inspected to resolve the issue permanently.

Repair costs vary depending on which component has failed. A replacement thermistor is typically the least expensive fix, with parts generally ranging from $15 to $50 depending on the model. Wiring harness repairs fall in a similar or slightly higher range for parts. A power module replacement is significantly more costly, with parts alone often ranging from $80 to $200 or more, plus labor if a technician is involved.

A knowledgeable DIYer can address some causes of E20 without professional help. Checking and reseating the thermistor connector plug is a straightforward first step that requires no special tools. Testing the thermistor resistance with a multimeter and inspecting the wiring are also within reach for those comfortable working with appliances, though replacing the power module is generally better left to a qualified technician.

Running the washer with an active E20 error is not recommended. Without a functioning temperature sensor, the power module cannot reliably control the heating element, which creates a risk of overheating the water or running cycles at the wrong temperature. This could damage fabrics and potentially cause a safety issue. The fault should be diagnosed and repaired before resuming normal use.