FP715 CH timer not working/radiators

[peruangel]

Hello,

I have recently moved into a house that has a Danfuss FP715, a potterton boiler and sealed radiators.

If I press the on for 1 hour switch or press the auto button then the boiler heats up but when I set the timer for the CH to come on, the red light shows but the boiler doesn't fire up.

Also a couple of radiators heat up fully, a couple only heat up around the edges and 2 don't heat up at all. They are sealed units with no key area so I'm not sure if they need bleeding and if so how would I do it?

Thank you in advance if you can help me

 

[namsag]

Bleed screws will be on the back of rad with a little plastic cover over it,,,

your clock is held in place by 2 little screws underneath undo these and swivel the clock off the back plate and replace with same cost about 30 quid

 

[gas4you]

Try pressing the reset button on the front. Tiny little hole that a pin fits in.

These are sensitive to electric surges and power cuts.