Both lights keep flashing when programme is on together, but when put on to a single programe ie. just the hot water, they are ok, just the light for that program is on. This is not a new instalation it has been ok until now,

Mike, May 2007

I am having the same problem, just started the other week. The 2 lights flash and click - but the boiler does not fire up. Turn one of them off (water or heating) and the other fires up. I have not changed the program etc - appears to be in some kind of 'conflict'.

Anyone know of the fix?

Howard

Howard, December 2007