What the manual says
Manufacturer manualCheck supply voltage; If no supply check the fuse in the plug or other supply point; Is there a supply voltage at the input to the control box; Set any CH and HW controls to CONTINUOUS position; Check the settings of the room and cylinder thermostats; If no supply - check the controls; Check the boiler thermostats; Replace the gas control valve.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Avoid the next call-out bill
A cover plan would handle faults like 3 PILOT LIT, BUT NO MAINS GAS: no call-out fees, no surprise bills.
Affiliate links. We may earn a commission at no extra cost to you.