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Rob
Rob, Home Appliance Technician
Category: Appliance
Satisfied Customers: 420
Experience:  20 yrs. experience with a major worldwide manufacturer.
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I have a Worcester Heatslave 20/25 Last night we noticed

Customer Question

I have a Worcester Heatslave 20/25
Last night we noticed heating and hot water switched off.
The lcd screen was still working but even when clicked through Off/Once/ Twice to On it didn’t turn on and red light did not come on.
Seems like it has lost power to the system. I assume display has a back up battery but today the lcd screen has stopped working.
Fuse in wall point is ok and is definitely receiving power to there (we have Honeywell Evohome Wireless unit wired in and light on this unit comes on)
Could it be a relay issue or pcb failure?
Any advice appreciated. Have baby in the house and really need hot water and heating back.
Thanks joe
Submitted: 8 months ago.
Category: Appliance
Expert:  Andrew Smith replied 8 months ago.
Can you confirm if this is the oil model?
Customer: replied 8 months ago.
Customer: replied 8 months ago.
it is oil fuelled
Expert:  Andrew Smith replied 8 months ago.

ok, your model has a red light?

Can you confirm it is not illuminated?

Customer: replied 8 months ago.
There were no red lights on.
I had been looking at the control box PCB. In doing this I removed and reconnected the connections to PCB from the ‘Power On’ and ‘Lock Out’ lights.
In doing this it started working just now.
I then powered it back off while I replaced covers. It then did now work.
I then repeated the above and it worked again and still is.
Customer: replied 8 months ago.
Photo here
Expert:  Andrew Smith replied 8 months ago.

Was the red light on on the control box down below?

If you press it, it resets the unit if it has tripped out

Expert:  Andrew Smith replied 8 months ago.

It looks like it is working now?

Customer: replied 8 months ago.
There is a red trip switch below control box. This has not tripped at any point.
Is it likely there’s an loose connection or intermittent fault in the control board somewhere.
Yes working now.
Expert:  Andrew Smith replied 8 months ago.

Strange if it has not been taken apart and something is loose?

All i can say is monitor it and see how you go over the next day or so.

Customer: replied 8 months ago.
I did move the front plate down to look so unplugged some bits and moved some wires.
Expert:  Andrew Smith replied 8 months ago.

ok, something could have been loose, but now its back together?

How about you monitor and come back tomorrow and we see how its done?

Customer: replied 8 months ago.
Sounds good. Thank you.
Just in time for baby bath time!
Cheers
Expert:  Andrew Smith replied 8 months ago.
Ok, leave the question open and do not try until tomorrow and I should get a notification when you do