I have a baxi back boiler with ch and hw controlled by a lifestyle lp522 timer.
The hot water turns on fine and the boiler fires up.
when asking for heating the timer indicates heating should be on but the boiler does not fire up. I have 2 life style valves, which when manually pushing the lever on top to the left, fires the boiler, but they return to the right automatically.
The lifestyle electrics box does not seem to be powering the valves and in turn the boiler is not firing (?)
what do you think?
I recently has gas engineers working on an upgrade outside and they had to isolate and restart my supply, but heating was fine yesterday and no other changes were made.