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- 3 Jan 2006
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have just moved into house with this bbu/fire. when either heat or hot water is on control pcb goes to lock out,re-set the stat pcb light turns amber then green and fires up. this works approx 30 mins then locks out. same process every time,hot water temp is fine and all radiators heat up when bb is on.red light is on when locked out no flashing or funny noises .ive seen previous tenant and problem is about 2 months old,they got a gas man in to check but as far as i can make out it was for service,according to the gas paperwork things are ok regarding ventiliation,gas pressure,etc. i know its up to landlord to sort out but they are round the world for the next 8 months starting in s.africa world cup so he dont want anymore bad news lol thanks for any info