What does the Baxi 5 Red Flashes fault code mean?

Your boiler's internal memory chip has developed a software or connection error, meaning it can no longer remember its correct settings to operate.

How much does it cost to fix Baxi error code 5 Red Flashes?

Typical repair cost for the Baxi 5 Red Flashes fault is £120-350 including labour.

Baxi 5 Red Flashes Fault Code: What It Means & How to Fix It

Technical description

Parameter storage unit (PSU) error

What causes this fault?

This fault occurs when the boiler's internal memory chip fails to communicate with the main control board, similar to a corrupted file on a computer. It is usually caused by a hardware failure within the chip itself or a loose physical connection on the circuit board that prevents the boiler from reading its essential operating instructions. Because the boiler no longer knows its own safety limits or settings, it shuts down immediately as a precaution.

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's internal memory chip has developed a software or connection error, meaning it can no longer remember its correct settings to operate.

Technical description

What causes this fault?

Engineer required

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