Central Heating boiler goes into start up shut down loop?
Ravenheat CSI 85 A(T) about 4 years old.
Boiler pump starts, boiler fires up, runs a few seconds then shuts down.
Appears to react to room control stat, as when I turn the stat down to 10C the boiler does not start at all, as you would expect.
When required for hot water only boiler runs fine.
Any ideas?
Dave Wilson, November 2010
