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Mend Danfoss FP 75 Heating Hot Water

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,

Mike
May 2007
DanfossDanfoss FP 75Heating, Home Heating SystemsHeating Danfoss Hot Water
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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