What does the Vokera E020 fault code mean?

Your boiler has shut down because it has reached an unsafe temperature, triggered by a safety sensor that prevents the unit from overheating.

How much does it cost to fix Vokera error code E020?

Typical repair cost for the Vokera E020 fault is £120-280 including labour.

Can I fix Vokera fault code E020 myself?

Check that all radiator valves are fully open to allow water to circulate.

Vokera E020 Fault Code: What It Means & How to Fix It

Technical description

Limit thermostat

What causes this fault?

This fault occurs when the water inside the boiler gets too hot, causing a safety switch to Cut off the system to prevent damage. The most common reasons are a pump failure that stops water from moving or a blockage in the heat exchanger that restricts flow.

This issue often appears when the heating is first turned on after summer, as the internal pump can seize up after long periods of inactivity.

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 →

Your boiler has shut down because it has reached an unsafe temperature, triggered by a safety sensor that prevents the unit from overheating.

Technical description

What causes this fault?

Engineer required

Related guides you might find useful

Banging / kettling / whistling noise

Boiler keeps cutting out

Radiators cold at the bottom

Recently viewed