Worcester Boiler Heatslave 20/25 Not Working - Lock Out

15 Aug 2020
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United Kingdom
Hi, I have a Worcester Boiler Heatslave 20/25 that started locking out yesterday. I can reset the boiler and it works for a short period of time (seems to be getting shorter every time I reset).

I've checked the water pressure and all good, any ideas on what the problem maybe?


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Apart from a good service may be required, and assuming you have oil and clean line filters, it sounds like a failing solenoid coil on the oil pump.
Thanks for info, much appreciated - is a solenoid coil replacement a possible DIY job or better done by an engineer?
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