What does the Ideal 15 fault code mean?

Your boiler is struggling to detect a flame and cannot start the ignition process properly, meaning you currently have no heating or hot water.

How much does it cost to fix Ideal error code 15?

Typical repair cost for the Ideal 15 fault is £150-300 including labour.

Manufacturer manual

Heat 15 kW, Natural Gas

Shared across the Logic Max HEAT2 range

This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Boiler cover options

A cover plan would handle faults like 15: no call-out fees, no surprise bills.

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

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

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

Almost always a stuck diverter valve on a combi.