I have an Ideal ff380 boiler. The heating is not coming on with the timer?

My boiler continues to provide hot water but the radiators come on randomly and not when we want them. Any ideas anyone please
Mark, March 2018


done
You may have a faulty timer clock. Follow try these steps and see if that resolves the problem:

https://www.superwarm.co.uk/troubleshooting-central-heating-faulty-timer-clock/

Jake, March 2019