Hi,
I'm a corgi eng. but don't do any domestic work (all commercial metering). At home I have a vokera linea 726 (3 years old) which is causing me trouble. First the thermistors went, which is now sorted. But now the hot water works ok, but when there is demand for CH the boiler ignites then goes out. It does this in a cycle. I have stripped all the fan down and cleaned fan blades and venturi. I can't understand why it fires up fine for DHW but not for the CH?? Should I change the pressure diff switch? or the Fan?? Any help would be appreciated.
I'm a corgi eng. but don't do any domestic work (all commercial metering). At home I have a vokera linea 726 (3 years old) which is causing me trouble. First the thermistors went, which is now sorted. But now the hot water works ok, but when there is demand for CH the boiler ignites then goes out. It does this in a cycle. I have stripped all the fan down and cleaned fan blades and venturi. I can't understand why it fires up fine for DHW but not for the CH?? Should I change the pressure diff switch? or the Fan?? Any help would be appreciated.
