Gas boiler with RT500RF

[meanbit]

Hello one of our customers heating is refusing to operate, Vailant combi eco tech plus gas boiler, with a RT500RF, seems to be getting a signal from stat. Possible problem.with Stat ?, all help appreciated

 

[Agile]

When you say "one of your customers", in what business is that?

Carpenter, candlestick maker or heating engineer?

 

[denso13]

I'd guess a wiring/connection issue but we would need more info.

 

[Jackrae]

Should that be : Carpenter, candlestick maker or heating engineer

or rather : tree surgeon, apiary recycling engineer or bog standard plumber

Very few who muck about with boilers are entitled to be called "engineers"

 

[meanbit]

I'd guess a wiring/connection issue but we would need more info.

Receiver is getting a signal, green light comes on?

Boiler goes through start up procedures, ends up with error message saying "no heating demand"

It seems there is a heating demand from RT500 rf, so what can be stopping boiler from firing up?