HJA8501 Washing Machine - Fills with water on every mode (Including when on a spin / drain cycle)
HJA8501 Washing Machine - Fills with water on every mode (Including when on a spin / drain cycle)
When powered and when any program is active (any washing selection but also the "Spin and drain" mode which shouldn't have a filling mode at all) the drum just takes on water. If I try and end the program early (which initiates a drain) it will actually drain the drum while still filling... but the drain outpaces the filling. The water pressure hose is clear, I've blown through it. The sensor could be the issue but I would have thought that would only cause problems during actual 'fill' cycles and not just at all times.
I know it's not much to go on but wondering if anyone has any suggestions on what to take a look at next? I will try a new water pressure sensor if you think that's worth a go, but I wonder if this is more likely to be control board related.
It doesn't fill with water when the machine is off or when not on a wash program. It's only once a wash program is activated that it starts pulling water into the drum.
The machine was working absolutely fine until yesterday when it just started doing this during a wash.
Solution Summary
AI-generated from this discussion
This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
HJA8501 fills with water on every selected programme, including spin/drain
- The problem
- On HJA8501, once any programme is started, the machine immediately fills with water even on 'Spin and drain'. If the programme is ended early, it drains while still filling. It does not fill when switched off or when no programme is running. The issue started suddenly after previously working normally.
- Likely cause
- The accepted reply says the pressure switch is unlikely to be the cause, because it does not directly energise the inlet valves outside a fill stage. The stronger suspicion is that the water inlet valves are being energised incorrectly, possibly due to a wiring, neutral switching or earth-fault related control issue. Exact failed component was not confirmed.
- What fixed it
- Do not replace the pressure sensor or PCB speculatively. Further diagnosis should be carried out by a suitably qualified appliance engineer, with attention to why the inlet valves are being powered during all programmes and whether one or all valves are involved.
- Checks to try
- Pressure hose was reported clear and was blown through
- Machine only fills when a programme is active
- Machine drains while still filling if programme is ended early
Safety: Further diagnosis should be carried out by a suitably qualified appliance engineer.
1 Answer
Hi. I don't think it can be related to the pressure switch. The pressure switch is not capable of energizing the water valves, other than on a fill section. The water valves must be getting power and a neutral return. Sometimes a washing machine could be wired up so that the valves have constant power, and they are switched on and off via the neutral. I've heard of some earth faults causing strange behaviour like this. It's not really one for DIY I'd say. I certainly wouldn't risk replacing the expensive pcb in just the hope it will fix it. Is it all the valves letting water in or just one?
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