Maytag Washer Error Code F3

F3 indicates a water valve thermistor sense failure where the temperature reading is too high. The thermistor monitors incoming water temperature so the machine can blend hot and cold water correctly. When this sensor reports an out-of-range high value, the washer flags F3 and defaults to running both water valves open during Warm temperature selections. The machine remains operative but cannot accurately control wash water temperature.

A reset may temporarily clear the code, but if the underlying cause is a failing thermistor, damaged wiring, or a faulty connection, the code is likely to return. The recommended first step is to run water through the machine and re-test, as a transient condition like an air pocket or a hot water spike can sometimes cause a one-time fault. If the code comes back after resetting, further diagnosis of the thermistor and its wiring circuit is needed.

Repair costs vary depending on the root cause. If the issue is simply a loose or corroded connector, the fix may cost little to nothing beyond your own time. A replacement water inlet valve or thermistor assembly typically ranges from around $30 to $100 for parts alone. If a technician is needed for diagnosis and labor, expect total repair costs in the range of $100 to $250 depending on your location and the parts required.

Yes, the washer remains operative with an F3 code active. However, water temperature accuracy will be affected because the machine defaults to opening both the hot and cold valves simultaneously when Warm is selected. Your laundry will still get washed, but delicate items or loads requiring a specific temperature may not be treated correctly until the fault is resolved.

The F3 code is not a safety shutoff situation since the washer continues to run. However, because the machine defaults to both valves open during Warm cycles, there is a possibility of water being hotter or colder than expected depending on household water supply conditions. This is generally not a hazard, but it is worth addressing to protect temperature-sensitive fabrics and ensure the appliance is functioning as intended.