New house purchase ch not turning on but hot water fine - Central Heating job in Newton Abbot, Devon

Job description

Hello. I have just purchased an old terrace house in Newton Abbot. I can not seem to turn on the CH. I have a boiler that is on, and it fires up and works for hot water. However there are no options for CH on the boiler itself.

There is a Danfoss TS715 Si wired in one of the rooms. This seems to only control the times? When I switch this to ALLDAY Or manually ON, the controller turns on red to show the heatings “on” however there is no response at the boiler. (Nothing happens)

There has been some electrical work carried out at the property before I have received the keys and I am unaware if they have disconnected anything. Does the timing controller need to communicate with something else eg a thermostat? As I can not locate one

Looking for someone to diagnose and fix the issue please. I understand its hard to diagnose without coming to have a look.

Any help appreciated.

Thanks

Tim

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