13 High

Ideal 13 Fault Code

The Ideal 13 fault code means: your boiler's internal computer has encountered a critical error and is unable to manage the system safely, meaning your heating and hot water have stopped working.. It appears on 2 Ideal models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Controller - internal failure - electronic
Typical repair cost £250-400 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Ideal models that show the 13 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Ideal 13 fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026