BoilerFaultCodesWhat the manual says
Manufacturer manualButton fault — verify all control buttons function; check PCB
Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
DIY fix possible
Check all the buttons on the front panel to see if any are stuck in the pressed position.Gently press and release each button several times to try and free them.Turn the power to the boiler off and back on again at the fused spur switch to see if the error clears.
Find a Gas Safe engineer
Search the official register →
Boiler cover options
Avoid the next call-out bill
A cover plan would handle faults like AL 42: no call-out fees, no surprise bills.
Approved partner
Get a quote →
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Affiliate links. We may earn a commission at no extra cost to you.