Solved
Hotpoint
Error Code H2O

H2O error - Fills fine, empties fine. Baffled. (Hotpoint WMEF 742)

NAnacimroc
Asked over 5 years ago 8,011 views
0

Hotpoint WMEF 742

Fills no problem. Loads of pressure going into back, loads of water filling into washing powder door (so 2 little solenoids on inlet are ok I presume). I put a new drain pump in it last year. I cleared exhaust pipe.

After 12 minutes on a 1hr 44 min cycle the H20 error appears and beeps constant. I can hear a pump spinning non stop but it just sits, doesn't fill or doesn't exhaust. If I hit pause, it allows door to open (no water in drum). When I press start again, it fills a little, empties a little then goes back to just a pump spinning and a H20 error.

Just put it on a spin and drain cycle and it done it no problem. Trying a rinse cycle now.

I'm baffled.

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.

Hotpoint WMEF 742 H2O error traced to faulty inlet valve solenoid(s)

The problem
Hotpoint WMEF 742 showed H2O after about 12 minutes on a wash cycle. The machine initially filled with good mains pressure visible at the dispenser, then a pump could be heard running continuously and the cycle would not continue. Spin and drain completed normally, but the H2O error also appeared on rinse.
Likely cause
Most strongly supported diagnosis was a fill timeout caused by one failed inlet valve solenoid on the multi-valve assembly. The discussion suggests the machine could take water through one valve path initially, but failed when the programme called for a different fill path for wash or rinse.
What fixed it
The inlet valve solenoids were replaced, with advice that the complete water valve assembly is normally replaced rather than stripping it down. The original poster later confirmed this cured the fault.
Checks to try
  • Observed strong water pressure at the inlet hose
  • Observed plenty of water entering the dispenser at the start of the cycle
  • Drain/spin cycle completed normally
  • Rinse cycle also produced the H2O error
  • Drain hose/pipe had been cleared previously
Parts or tools mentioned
  • Inlet valve solenoids

Safety: Do not attempt improvised electrical testing or bypassing. Further diagnosis should be carried out by a suitably qualified appliance engineer.

Confirmed fixedGenerated 6 Aug 2026 · AI summaries can make mistakes — read the full thread below.
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8 Answers

Accepted Answer
0
WH
WhitegoodshelpVerified Engineer
Answered over 5 years ago

That's strange, H20 error is a water fault (H20) and usually means it's timed out on fill.

Whitegoods Help — appliance repair expert and forum host.
0
NA
nacimroc
Answered over 5 years ago

So the H20 error did appear on the rinse cycle. There is really good pressure from hose going into machine. When I open the powder door when I start a cycle there is loads of water filling.

Could I manually pour a load of water into the powder door on the fill to see if that stops it? I presume it opens solenoid, fills and there is some form of high water level cut off closing solenoids again? If this doesn't fill quick enough it gives a H20 error?

Inlet solenoids are cheap. Maybe I'll switch them out and see.

0
WH
WhitegoodshelpVerified Engineer
Answered over 5 years ago

Yes you could. Though arguably it's unnecessary because if it isn't taking any water in and then timing out an H2O error the problem is clearly that the washing machine cannot take any watering. It's possible that it is just one valve that has gone. There is usually at least two separate valves or two separate solenoids on the same valve. One puts water into the right-hand side of the soap dispenser draw and another puts water into the left-hand side. It's possible that when water comes in initially it is coming from the valve that is okay but then when it wants to take in water on the main wash and or on rinses then the valve that supplies water there is faulty. Check out this article for further help and tips Washing machine not filling with water

Whitegoods Help — appliance repair expert and forum host.
0
NA
nacimroc
Answered over 5 years ago

Thanks. This makes sense now and explains why I have water, but yet no water. I will switch it out and hopefully that makes the difference. Thanks for your help. Much appreciated

0
NA
nacimroc
Answered over 5 years ago

Is it an easy job to disassemble the solenoid valves? Might give that a go before waiting on replacements. They looked like sealed units if I remember right. Or what voltage are they? Might gerry rig something to spare solenoids I have.

0
WH
WhitegoodshelpVerified Engineer
Answered over 5 years ago

You can't usually buy a solenoid separately. With double or triple water valves, if one of these solenoids has gone you should replace the unit complete. If you can detect that one of the solenoid valves has gone open circuit (and bear in mind they have a very high resistance), and by any chance you can get a solenoid they usually gently prise off but I can't guarantee it.

I would be very surprised if any manufacturer supplies any parts whatsoever for a water valve. They will usually be just supplied as a complete unit. Stripping one down (as opposed to taking off the external solenoid) is not a good idea. I did this once early on in my career as an engineer to replace a small rubber seal inside. Back in those days you could actually stripped down any part and by any of the parts inside. However, the lady went away for the weekend and a very slow leak that was undetectable when I was testing eventually caused water damage to the ceiling of the flat below. That lesson was learnt quick and early and I never tried to repair a water valve again :-)

Whitegoods Help — appliance repair expert and forum host.
1
NA
nacimroc
Answered over 5 years ago

Just wanted to come back and say that worked a treat. Replaced the solenoids and fixed issue. Thanks for the help.

0
WH
WhitegoodshelpVerified Engineer
Answered over 5 years ago

Excellent news. Thanks for the update.

Whitegoods Help — appliance repair expert and forum host.

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