Hi
Error F03 in Hotpoint washer means that the thermistor is open. When thermistor turns bad it will not let the water to heat or in some cases will boil the water to extreme temperatures. You’ll need to replace the thermistor to resolve this issue. The thermistor is located in the motor control unit. Inspect the element if its open circuit, it should read 1500-1800 ohms on Rx1 on the multimeter, if not then element is bad. To check/replace the element remove the lower rear panel. Hope this helps...
Daniel
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