Wiring SPlan heating system

[newton3]

I have recently wired my heating system as per the wiring diagram from danfoss.

The problem I'm having is that when I switch the boiler on, it instantly calls for heat and starts to fire up even though the programmer is not calling for heat or hot water.

Been over all of the wiring and it's as the diagram sugests.

Any ideas anyone?

 

[Terrywookfit]

Check your connections in programmer are correct.
ie, not wired to off terminals.

 

[simond]

Have you allowed for pump overrun being separate from boiler switched live? Most diagrams show the pump linked to the boiler 'on' connection.

Wild guess as you have not stated boiler or controls model/type.

 

[newton3]

I'll check the connections in the programmer.

The boiler is an ideal ecos condensing boiler with the pump contained inside, so i presume boiler overrun is wired inside.

 

[namsag]

Go to ideal site have a lok at manual on there and wire it as it says

 

[D_Hailsham]

I have recently wired my heating system as per the wiring diagram from danfoss.

Which wiring diagram is that?

 

[newton3]

problem solved, i found a link in the boiler which can be removed if there is an external programmer.