hotpoint aquarius all flashing lights

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

Hotpoint Aquarius WD420 stops on wash cycle with four flashing lights

The problem

Hotpoint Aquarius WD420 washer-dryer would start a programme, fill with water and rotate the drum, then stop within about a minute on wash cycles with four lights flashing: power on/off, drying high heat, reduce creases and time saver. A rinse cycle would fill, turn and pump out normally.

Likely cause

The accepted reply said this light pattern was not a normal fault code and suggested the control had effectively 'lost it', making a main PCB fault possible. However, it was not ruled out that another fault was triggering the behaviour, so the exact cause was not confirmed.

What fixed it

No confirmed repair was documented. The accepted advice was that this was not realistically something to deal with by guesswork and that replacing the PCB would be too risky as a gamble without proper diagnosis. Further diagnosis should be carried out by a suitably qualified appliance engineer.

Checks to try

• Pump impellor checked and found to spin freely
• Machine appeared to pump out water when water was added
• Sump removed and debris cleared out, including coins, screws, a hair grip and rust particles
• All hoses checked and reported clear
• Pump stated to be electrically good
• Rinse cycle tested: filled, turned and pumped out
• Wash cycles tested: stopped in under a minute with flashing lights