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    Alpha 240p problem

    Thanks Tony. Yes this boiler does have a frost stat built into the main pcb, I will try the test you advised. Another problem this morning, when drawing hot water, the boiler fires up for about 30 seconds (ish) then goes out for about 10 seconds, fires up 30 ish seconds goes out etc. this...
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    Alpha 240p problem

    May have found the answer. Just got home from work and CH was on (dont know for how long but house was hot!!). I drew some hot water and boiler shut down when I turned off tap. both DHW and Primary flow switches turned off. Then 30 seconds /1 min later pump starts primary flow activates boiler...
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    Alpha 240p problem

    Sorry Tony, yes the DHW pin works perfectly, and instantly retracts when DHW demand is stoped. This pin does not move (nor should it) when the boiler starts its phantom goings on. Micro switch does disengage. Thanks Andy
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    Alpha 240p problem

    The diverter valve pin at the rear (primary flow) takes a while to retract, when the ch goes off, but retracts instantly when hw is turned off. Then it seems for no logical reason, pump starts and primary flow swich activates, then boiler fires up?????? Micro switches both in correct...
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    Alpha 240p problem

    My 10 year old alpha 240p has developed a strange problem, after drawing hot water, or after ch has been on, boiler shuts down as it's ment to but after a few seconds fires back up again and heats up radiators. During this time no lights are illuminated (except power light). I can only stop...
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