Ideal Logic 15 - Fault Code Fd

[CastleHill]

Got the Ideal Logic 15 along with Wet UFH. All fine for a year and half. Suddenly boiler says Fd when the UFH calls for boiler.
Any thoughts?

 

[ShaunCorbs]

Low flow / no flow

 

[CastleHill]

Low flow / no flow

Thanks, got that bit
How do I resolve?

 

[ShaunCorbs]

Any rads/ what type of system do you have ?

 

[king of pipes]

The boiler will still be under the manufacturers warranty , is your hotwater effected ? Kop

 

[CastleHill]

Any rads/ what type of system do you have ?

No radiators, just UFH on 2 floors

 

[CastleHill]

The boiler will still be under the manufacturers warranty , is your hotwater effected ? Kop

It is a new build. So the builder is attending
the problem though is the builder wants to take the blame away from them due to the fact that we replaced the radiators with UFH

 

[ShaunCorbs]

Does it happen with just one loop on or the whole lot ?

 

[king of pipes]

As shaun says is it the whole system or just a zone causing it is there a bypass fitted and what heats the hotwater ? a few picture may help us . cheers kop