Daewoo Washer Error Code H2

The H2 code on a Daewoo washer signals a thermistor wash fault, meaning the control board cannot receive a valid temperature reading from the wash thermistor. This can result from a defective sensor, a failed sensor, or a poor electrical connection at the thermistor connector. The washer will not operate normally until the fault is resolved.

It is not recommended to continue using the washer while the H2 code is active. The thermistor monitors water temperature during the wash cycle, and without a reliable reading, the machine cannot properly regulate heating. This could result in water that is too hot or improperly controlled, potentially damaging fabrics or the washer itself.

A reset may temporarily clear the H2 error code, but it will return as soon as the washer attempts to read from the faulty thermistor again. Because the underlying cause is a hardware issue, specifically a sensor defect or connection problem, the error will persist until the thermistor or its wiring is repaired or replaced. A reset alone is not a fix.

Start by unplugging the washer and locating the wash thermistor connector, then check that it is fully seated and free of corrosion or damaged pins. If the connection looks good, use a multimeter to test the thermistor's resistance and verify it changes with temperature. If the sensor reads open circuit or gives a fixed resistance, it needs to be replaced. Damaged wiring between the thermistor and the control board should also be inspected and repaired if found.

If the fix is simply reseating a loose connector, there is no parts cost involved and only your time. If the thermistor itself needs replacement, parts typically range from around $15 to $50 depending on availability. Adding a service call from a technician will bring the total repair cost to approximately $100 to $200 in most cases.