Hello all
My Worchester Bosch 28CDi is not getting as hot as it used to on the central heating side. A month ago, if the thermostat was set to maximum, you couldn't hold your hand on some radiators for more than a few seconds, but now, although they are still pretty warm, they are not getting as hot. I am checking radiators that have the thermostatic valves set to maximum, or the radiator in the bathroom that has not got a thermostatic valve on. I have even checked the 'Feed' outlet pipe on the boiler and that is only getting as warm as the radiators. The domestic hot water (that is the tap water isn't it?) still gets VERY hot with the thermostat on maximum. I have tried to bleed the radiators, but there is no air in them. The pressure gauge on the boiler is reading about 0.5 bar when the system is cold, but this rises to about 2.0 bar when the heating is on. What should this be reading when the system is hot/cold?
I assume it must be a temperature sensor/thermostat issue, but where do I find these on the boiler, and can I check which is faulty without buying each part in turn until I find the correct one?
Thanks for reading.
Craig
My Worchester Bosch 28CDi is not getting as hot as it used to on the central heating side. A month ago, if the thermostat was set to maximum, you couldn't hold your hand on some radiators for more than a few seconds, but now, although they are still pretty warm, they are not getting as hot. I am checking radiators that have the thermostatic valves set to maximum, or the radiator in the bathroom that has not got a thermostatic valve on. I have even checked the 'Feed' outlet pipe on the boiler and that is only getting as warm as the radiators. The domestic hot water (that is the tap water isn't it?) still gets VERY hot with the thermostat on maximum. I have tried to bleed the radiators, but there is no air in them. The pressure gauge on the boiler is reading about 0.5 bar when the system is cold, but this rises to about 2.0 bar when the heating is on. What should this be reading when the system is hot/cold?
I assume it must be a temperature sensor/thermostat issue, but where do I find these on the boiler, and can I check which is faulty without buying each part in turn until I find the correct one?
Thanks for reading.
Craig