There is no error code on the display. My previous gas engineer told me that the display should stay on all the time, but on my boiler, the screen only lights up when the boiler is actively heating water or running the central heating...
I have an Ideal Logic boiler, and I noticed that the display screen does not stay on all the time. It only lights up when I change settings or when there's an error. However, a gas engineer who visited my home claimed that something was...