hi got a flashing 30 degree light on my baxi 105 combi. turn the reset button the boiler will work central heating and hot water all day , as soon as i turn the room stat down the boiler cuts off as it should but when i turn the stat back up to call for heat nothing happens , the only way to get it to work is to turn the reset again, what is the problem thanks

bill, March 2010

i would check the air pressure switch isnt sticking open, the contact needs to break after demand is satisfied to allow the boiler to fire up for ist next cycle, if this is stuck the boiler doesnt get the signal to fire once it cools unless its manually released, sounds like the air pressure switch is the first test to carry out buddy

john, March 2010