Hi
I am hoping somebody could shed some light on a problem that I am suffering at the moment with my central heating. I have a standard y plan system with Potterton Prima b 40 boiler with cylinder thermostat and room thermostat. The boiler keeps short cycling constantly for very short periods when the programmer and all thermostats are switched to off. The only way I can stop the problem is to turn the boiler thermostat to off but this causes the pump to run constantly? The heating and hot water is working as normal but when we go to bed on a night and switch everything off after a while the boiler fires up and the pump starts to run for about 30 secs and then switches off. This occurs around about a dozen times before a 10 to 15 min break before it starts again. The only way to stop it is to turn the boiler thermostat to off which kills the boiler and pump(in airing cupboard) but then the pump starts up again and runs continuously all night.
Any advise would be great
Cheers
Steve
I am hoping somebody could shed some light on a problem that I am suffering at the moment with my central heating. I have a standard y plan system with Potterton Prima b 40 boiler with cylinder thermostat and room thermostat. The boiler keeps short cycling constantly for very short periods when the programmer and all thermostats are switched to off. The only way I can stop the problem is to turn the boiler thermostat to off but this causes the pump to run constantly? The heating and hot water is working as normal but when we go to bed on a night and switch everything off after a while the boiler fires up and the pump starts to run for about 30 secs and then switches off. This occurs around about a dozen times before a 10 to 15 min break before it starts again. The only way to stop it is to turn the boiler thermostat to off which kills the boiler and pump(in airing cupboard) but then the pump starts up again and runs continuously all night.
Any advise would be great
Cheers
Steve