Hotpoint Aqualtis F03 error

This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.

Hotpoint Aqualtis intermittent F03 error likely linked to NTC circuit

The problem

A Hotpoint Aqualtis washing machine was showing an intermittent F03 fault with all indicator lights flashing. The machine could often continue running for a while after the code appeared. The heater element was replaced but the fault remained. The original poster then stated that both the element and thermistor had already been changed.

Likely cause

The accepted forum advice linked F03 to the NTC circuit. As the element and thermistor had already been replaced without curing the fault, the most strongly supported explanation in the discussion is a connection fault or a break in one of the thin wires to that circuit.

What fixed it

Check the wiring and connections associated with the thermistor/NTC circuit for a poor connection or broken wire. The thread was marked solved, but no final repair confirmation was posted, so the exact fix was not confirmed.

Checks to try

• Observed intermittent F03 fault
• Indicator lights flashing when fault appeared
• Heater element replaced with no cure
• Original poster said thermistor had also been changed
• Forum reply suggested checking for a connection fault or broken thin wire

Parts or tools mentioned

• Heater element
• Thermistor