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Many thanks got new pcb fitted all up and running fine :P Think I'll look at putting in a wood burner with backboiler next year? simon

Many thanks As the fan is not starting i dont think it would get as far as a flame fail? so I'm thinking dhw thyrister checked ok ch thyrister checked ok pump running ok dhw flow switch working ok low water pressure switch ok and over heat stat closed but no power to it it must by a...

Page 7 is as you stated but page 28-fig.50 has no item 3? 1=mains switch/reset 1A= summer/winter switch 4 = ch thermostat 5 = dhw thermostat green power light red flame-overheat light timeclock 7=pressure gauge ch could you let me know where item 3 connects on the board? Many...

thank you the GC number is 47 581 30 Many thanks simon

Thanks for the reply. there is no manual reset tho O/T STAT it is ment to auto reset? and is testing as closed with a meter. Any help or test info would be great. Many thanks simon ravenheat LS 80 T white star

Hope someone can help? I'v got the overheat light lit on the boiler power on water pump starts no fan(no power to fan) no power to overheat thermostat? could someone tell me is the overheat thermostat N/C switch or is it a sensor? or am I barking up the wrong tree? :oops: Many thanks...