Danfoss FP 75, heating and hot water lights keep flashing and clicking?
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,
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
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