Hotpoint WMXTF742P tripping

[char14lew]

Hi All,
This appliance is tripping the electrics, been through motor and heater checking for low insulation- both ok. I checked door lock which showed just over 200ohms which seems quite low. Also went over the main board, cleaning carbon deposits off tracks etc. I tested it three times, starting cycles,draining,spinning all seemed fine. Customer ran a couple of short washes yesterday and ok but today has tripped again 30 mins into a 90 min cycle. I’m going back tomorrow to check over the mains lead and drain pump. Anywhere else I should be looking?
Cheers Darrell

[electrofix]

Re: Hotpoint WMXTF742P tripping

Faulty socket ?
mains suppressor?

at a 90 min wash would expect it to be heating at this point therefore its pulling power and things get warm and more likely to have an earth fault

Dave

[neon_3SP_glow]

Re: Hotpoint WMXTF742P tripping

Possibly a faulty element once it gets hot?

Can you sit with it until it trips?… then test Earth leaks promptly…

[char14lew]

Re: Hotpoint WMXTF742P tripping

thanks for replies guys!
went back to this,checked socket, changed mains lead and surpressor- still tripping.
live tested heater,not tripping electrics- insulation tested straight after-ok.
live tested drain pump just to rule that out also. Has to be mains board surely?

[electrofix]

Re: Hotpoint WMXTF742P tripping

How?

you are looking for an earth fault as I assume its blowing the RCD and not the MCB and the main board is well insulated in a plastic box.

Dave

[char14lew]

Re: Hotpoint WMXTF742P tripping

what if there was a short between live and neutral at the board?

[electrofix]

Re: Hotpoint WMXTF742P tripping

it would blow the fuse or the mcb not the rcd

not to mention blowing a hole in the board

dave

[iadom]

Re: Hotpoint WMXTF742P tripping

I would be trying a new heater for starters. 😉

Are you using a multimeter or megger to check the element?

[char14lew]

Re: Hotpoint WMXTF742P tripping

I checked it for resistance and insulation, before and after live testing. If it’s the heater, how is it not tripping when live testing?
I won’t be going back to this one,but will try changing the heature in future regardless!
thanks

[iadom]

Re: Hotpoint WMXTF742P tripping

But did you check the heater with a megger?

I have had more than one that didn’t register as faulty with my multimeter but did when zapped with my megger.

[Author]

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