Washer stops heating water; F07 displayed, often during warm or hot cycles.

Safety First: Disconnect power. The heater area can be sharp and may retain heat after use.

Step-by-step checks:

• Access heater: Remove the rear panel. The heater is usually mounted in the lower portion of the outer tub with two terminals and a center ground.
• Test element: Disconnect the heater wires and measure resistance across the heater terminals. Typical values are 10–30 Ω (check your model spec). Infinite resistance indicates an open heater.
• Check for ground fault: Measure resistance from each heater terminal to ground. There should be no continuity (OL). Any reading indicates a shorted element.
• Inspect wiring and thermostat: Trace the heater wiring through any inline thermostats or thermal fuses. Test each for continuity.
• Control relay: If the heater and wiring test good, the heater relay on the main control may be stuck or failed. Visual inspection may show burnt spots.

When to replace: Replace the heating element if open or shorted. Replace any open thermostats. If all components test good, the main control board may need replacement.