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Hiyas,
Any ideas on why an older hotpoint, 95 series, would start taking in water, turn the drum then begin “stuttering”. i.e. water valves opening and closing rapidly? It’s not a wiring fault and the timer, module and pressure switch have all been changed to try and cure. My gut feeling is it’s the motor causing it but can’t explain why. Existing motor checks out fine on the meters.
(I hate inheriting jobs 🙁 )
If the complete model number is required I’ll dig around in the van for it………………….. tomorrow. Too tired now. 😛Thanks
BrianRe: One for the Hotpoint specialists
Could it be the interlock can cope with the load from just the valves but is throwing a wobbly when it gets the additional current for the motor?
Re: One for the Hotpoint specialists
It seems that the drum action is releasing the accumulated presure in the chamber momentarily, this can be caused in two ways a twist or blockage in the dispenser outlet hose which causes presure in the whole container, pre-activating the presure switch or a slight blockage in the presure chamber. The original chamber at 90 degrees to the container was prone to blocking giving the fault you describe. It should be replaced with the banana shaped chamber.
Re: One for the Hotpoint specialists
Good calls lads. I can see the logic in both posts. I’ll certainly check them both out. (Still hate inherited jobs though 😛 )
Thanks for the help.Brian
Re: One for the Hotpoint specialists
Depending on the model some have a single level pressure switch and some a double. On the latter the fill is to half level with motor static, then to full level with motor action. Unplug the motor and see what happens. At the same time you could remove the back and with the motor unplugged you could manually turn the drum to see if that causes the problem. If the fault occurs then a physical fault such as a blockage would be the most likely. Worth checking and cleaning the pressure chamber and hoses, I wouldn’t bother changing it in a machine of this age.
Re: One for the Hotpoint specialists
I find those Hotpoint pressure vessels always leak when I put them back on. I don’t understand why as it’s just an O ring seal the same as on Zanussi drain pumps, which never seem to leak. 😕 I routinely put silicone round the O ring now.
Re: One for the Hotpoint specialists
The later viking horn/ banana shaped pressure chamber is not designed to fit the earlier drum. The hole in the outer drum is different, you need lots of sealant to make it fit. I have never, ever replaced an old style chamber with the later one.
Re: One for the Hotpoint specialists
Need the full model number, if its the type with a solonoid on the back of the timer,even the brushes arcing can cause this very fault. havn’t come across one for years though.
Re: One for the Hotpoint specialists
Look for an earth fault on the metal harness to cabinet clip by the door interlock. The weight of the drum changes during fill and the earth fault may not be showing until half full.
Re: One for the Hotpoint specialists
Just to let you know the outcome. Bypassed the door switch, no difference. Cleaned out the pressure system, no difference. Checked all the earths, tightened connections all over the place. Still no difference. Fitted a new pump as old one was intermittently sticking. Still not working.
Gave up and changed the motor, pigging thing appears to be OK now.
Don’t really understand why as the motor checks out OK on the meters.
Not to worry, customers happy.Brian
Re: One for the Hotpoint specialists
Full marks for staying power, I think I would have told them their machine had reached the end of its useful life 😈
Re: One for the Hotpoint specialists
Would suggest it was the type with the stepping solenoid as Eastmark said. The first time I heard the timer solenoid firing on and off like a machine gun I thought it was a timer fault. It was only when I saw it happen on a machine that had a timer fitted a couple of months before that I found out it was the motor causing it.
Re: One for the Hotpoint specialists
Unfortunately there is no solenoid on this machine.
It was the water valves opening and closing rapidly that was making the noise.
Thanks to all for the help, I know I made it a bit difficult though by not putting the full model number. For some reason I’ve got a mental block on the model number of this machine, probably cause I hate it so much 😛Brian
Re: One for the Hotpoint specialists
Very unusual, not come across that on a 95 with basic timer before. That’s what stops the job getting boring, there is always something new to learn. 8)
Re: One for the Hotpoint specialists
Yes, I had an unusual one this morning. Zanussi FL1081 keeps doing a quick burst (2 seconds or so) of full spin during the wash and starts filling at the same time. Customer says it does it at the same times on each wash so I am working on the basis that it’s a timer fault rather than a chafed wire etc. It turns at the correct speed most of the time and the tacho magnet / coil seem OK.
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