BoilerFaultCodesWhat the manual says
Manufacturer manualCentral heating thermostat knob turned off or no heat demand by the eBUS control unit
What causes this fault?
This code appears when the physical heating temperature dial on the front of the boiler has been turned all the way to the left, which electronically disables the heating function. It is often caused by someone accidentally bumping the dial while cleaning or intentionally turning it off during the summer and forgetting to turn it back up. Because the dial is in the 'off' position, the boiler is simply following instructions to ignore any requests for heat from your thermostat.
This is most frequently encountered during the first cold spell of autumn when homeowners try to turn their heating back on after leaving the dial off all summer.
DIY fix possible
Locate the central heating control knob (usually marked with a radiator symbol) on the front of the boiler.Turn the knob clockwise to the desired temperature setting.Check if the display changes and the boiler begins its ignition sequence.
Avoid the next call-out bill
Monthly cover means no unexpected bills when your boiler breaks down.
Affiliate links. We may earn a commission at no extra cost to you.