What does the Baxi E.02 – .47 fault code mean?

Your boiler has detected a communication problem with your external thermostat or smart controls, meaning it cannot receive the command to turn on.

How much does it cost to fix Baxi error code E.02 – .47?

Typical repair cost for the Baxi E.02 – .47 fault is £80-180 including labour.

Can I fix Baxi fault code E.02 – .47 myself?

Check if your wireless thermostat has run out of batteries and replace them.

Baxi E.02 – .47 Fault Code: What It Means & How to Fix It

Technical description

Wiring to external device error.

What causes this fault?

This fault occurs when the boiler loses its digital connection with your room thermostat or smart hub, preventing the message to 'turn on' from reaching the burner. The most common reasons are dead batteries in the wireless thermostat, a loose connection in the wiring behind the control box, or a faulty receiver component inside the boiler casing.

This fault is frequently reported in autumn when homeowners turn their heating back on for the first time and discover that thermostat batteries have drained over the summer.

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 detected a communication problem with your external thermostat or smart controls, meaning it cannot receive the command to turn on.

Technical description

What causes this fault?

Engineer required

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