Can I override boiler ,thermostat broken

[SimonPiggott]

I have a ideal logic 30 boiler ,the thermostat receiver looks to have died ( no lights on wired receiver ) I believe this need# replacing but in the mean time does anyone know if I can override the thermostat if heating is required please?
the handheld thermostat is working it’s the boiler reciever that has no power the hot water is fine so I know the boiler is ok
the thermostat system is a Silas rf500rf wireless set up
thanks for your time

 

[ShaunCorbs]

Just to check the boiler dial is on hot water and heating ?