Emergency
01 on Vokera Linea 726

Your boiler has failed to ignite because it is not receiving gas or has detected an issue with the internal airflow, meaning you currently have no heating or hot water.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

What the manual says

Manufacturer manual

Gas supply problem / Gas line requires purging / Reversed polarity / Broken, internal flue joint

From this model's manual
Verified against the Vokera/Vokera Linea_installation_and_servicing_instructions installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a emergency 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 01: no call-out fees, no surprise bills.

Approved partner
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.

Related fault codes

02View →03View →04View →

All 9 fault codes on the Linea 726

Seeing a different code? Every code this model can display, in one place.

0203040506070809

Related guides you might find useful

Radiator not heating up

One cold radiator is usually a stuck valve pin or trapped air.

Read →

Hot water works but heating does not

On a combi it is usually the diverter valve. On a system boiler, the motorised valve.

Read →

No hot water but heating works

Almost always a stuck diverter valve on a combi.

Read →