We have a Worcester Bosch 35CDi II RSF boiler that we've had for about 10 years and it's developed a problem.
When we turn a hot water tap on at a low rate it ignites quickly and starts working as expected and then after about 10 seconds it starts making banging noises and the pressure gauge jumps up and down and the flame goes out.
Turning the tap off and then back on again starts the process all over.
If I turn the tap on full then the water is heated as you'd expect and there is no banging.
First off does any one have any suggestions as to the fault? My thoughts are that its getting too hot and the pressure is increasing too much and shutting down.
Secondly is anything like the Homeserve repair service any good? It's £240 for a repair and 12 months of cover which doesn't sound too bad if it solves the problem.
Alternatively is it worth looking at just replacing it if it's 10 years old and put any repair costs towards a new one?
When we turn a hot water tap on at a low rate it ignites quickly and starts working as expected and then after about 10 seconds it starts making banging noises and the pressure gauge jumps up and down and the flame goes out.
Turning the tap off and then back on again starts the process all over.
If I turn the tap on full then the water is heated as you'd expect and there is no banging.
First off does any one have any suggestions as to the fault? My thoughts are that its getting too hot and the pressure is increasing too much and shutting down.
Secondly is anything like the Homeserve repair service any good? It's £240 for a repair and 12 months of cover which doesn't sound too bad if it solves the problem.
Alternatively is it worth looking at just replacing it if it's 10 years old and put any repair costs towards a new one?