I have a Ravenheat 820/20T which has developed a problem with its ignition.
If the boiler hasn't been used and is cold then it ignites correcty within 5 to 10 seconds of central heating or hot water demand.
However after using the hot water for a bath or shower, the boiler will not re-ignite on demand for up to 90 seconds. Even if I over ride to cenral heating mode, it can still take a very long time.
I have recently replaced the diaphragm in the Gianonni 3 way valve and I can hear the microswitches operating correctly.
Has anyone got any ideas?
If the boiler hasn't been used and is cold then it ignites correcty within 5 to 10 seconds of central heating or hot water demand.
However after using the hot water for a bath or shower, the boiler will not re-ignite on demand for up to 90 seconds. Even if I over ride to cenral heating mode, it can still take a very long time.
I have recently replaced the diaphragm in the Gianonni 3 way valve and I can hear the microswitches operating correctly.
Has anyone got any ideas?