What does the Vokera 20 fault code mean?

Your boiler has detected a safety fault with the temperature sensors or internal wiring that prevents it from firing up.

How much does it cost to fix Vokera error code 20?

Typical repair cost for the Vokera 20 fault is £120-250 including labour.

Vokera 20 Fault Code: What It Means & How to Fix It

Technical description

Fault code 20 shows (from Fault Finding Test B)

What causes this fault?

This fault occurs when the boiler's control board detects that the temperature sensors are sending an illogical signal or have disconnected entirely. It is usually caused by a physical failure of the internal thermistor or damage to the delicate wiring that connects these sensors to the main computer. Because the boiler can no longer accurately monitor how hot the water is, it shuts down as a safety precaution to prevent overheating.

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.

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Your boiler has detected a safety fault with the temperature sensors or internal wiring that prevents it from firing up.

Technical description

What causes this fault?

Engineer required

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