I changed my fp715 with a fp720 and changed to back plates over. wired it up the same but i have no hot water. The red led lights up when the time it is set comes round but it doesnt show the tap symbol in the display. i changed to motorised valve with a new spare I have. wondering if its wired wrong or i havent got the settings correct? The system is an Trianco oil boiler with Megaflo water tank. 2 motorised valves and a mechanical thermostat
Danfoss fp720 replaced a fp715 now no hot water
- Thread starter madtrakz
- Start date
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Danfoss is the white valve at the bottom. I suspect you’ve wired it wrong, as there’s no hot water on connected in the FP720 - I think you may have incorrectly placed it into the earth terminal, that looks like just yellow imo.
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