We have moved into a new house in the last year which has a Thorn M Gas Boiler (M44/54). It has recently had a new thermostat fitted which appears to be working fine.
However before the thermostat was fitted, and since, the boiler hasn't been coming on of a morning despite the programmer for both HW & CH showing that they are on and the pump clearly running. We had the programmer changed but this has had no effect. The strange thing is that if you either a) switch the programmer for CH&HW to off then back to twice the boiler fires up or b) you turn the thermostat on the boiler right down until it clicks then switch it back up it also fires. Finally the boiler has always come on in the afternoon after being off for a period.
Any ideas would be appreciated a cold house in the morning makes it even harder to get up for work.
However before the thermostat was fitted, and since, the boiler hasn't been coming on of a morning despite the programmer for both HW & CH showing that they are on and the pump clearly running. We had the programmer changed but this has had no effect. The strange thing is that if you either a) switch the programmer for CH&HW to off then back to twice the boiler fires up or b) you turn the thermostat on the boiler right down until it clicks then switch it back up it also fires. Finally the boiler has always come on in the afternoon after being off for a period.
Any ideas would be appreciated a cold house in the morning makes it even harder to get up for work.
