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Another not straightforward case. Would appreciate suggestions if anyone has encountered the same thing and managed to diagnose.
Hoover H3W69TME-80 31011580 just over 12 months old, which is itself a warranty replacement.
Customer reported E02 error, was expecting faulty inlet valve.
Instead, there is no noise at all suggesting there is no power to the valve. The machine will agitate though, the error only comes on after a few minutes (which I haven’t witnessed)
I then tried a drain&spin cycle, the pump is not activating.
Appears the only things working is the door lock and the motor.
Insulation also very low for a machine of that age, only 50 megOhms. Shot up when I unplugged the inverter, suggesting that might be faulty but I don’t see what that would have to do with the inlet valves and the pump.
Had partial look at the board, couldn’t get some of the connections off, what I saw looked visually ok.
Blew down pressure hose just in case.My gut feeling is it’s the board?
Lucie
Pump on order, somehow don’t think the customer would go for new pcb if pump doesn’t do the trick but you never know.
did you check board as well
have had hoover machine leak on pump and make it go bang while also taking out the board triac that controls it
so was pump rusty ?
Dave
It’s a stab in the dark at the moment, I haven’t been back to the machine. Figured it was the quickest way, as can’t go back until next week.
I was only able to partially inspect the board as some of the connections wouldn’t budge. I’ve damaged a board before because the connections were too tight, so didn’t want to risk it. No obvious sign of damage but it wasn’t the component side.
Reporting back on this. It was the pump, as suggested by Dave (thanks!), resistance was 3.5Mohms. It’s always the thing you forget to check, isn’t it. I wouldn’t mind but I have some notes on my phone from way back when I did my training, including “if no fill can be caused by brushes or pump. Catches engineers out”. Remembered the brushes (it was a brushless motor), but not the pump — it was the first time I encountered the fault in the field — and didn’t think to look up my notes. I’m sure there’s a lesson in there somewhere…
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