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I would really like some advice please if someone would care to pass some on. I called boiler repair man out but it will take him till Tuesday before he can make it to me, Problem is boiler wont turn off unless I turn it off at the boiler it's self, think valve is stuck open and I'am wondering...

Looking for some help/info, In between the timer going off mid morning and coming on again around tea time the dt92 indicates no signal, I'd like to know if that is normal, And also the call for heat flame sign comes on two seconds after the bd91 relay box green light comes on and the green...