BoilerFaultCodesWhat the manual says
Manufacturer manualPCB fault
From this model's manual
Verified against the Vokera Linea 7 installation & service manual, page 32.
What causes this fault?
This fault occurs when the boiler's main control board suffers an internal electronic failure or loses communication with the rest of the components. The most common reasons are age-related wear to the board's circuitry or a sudden electrical surge that has damaged the sensitive microprocessors.
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.
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 09: 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.