How much does it cost to fix Main error code E130?

Typical repair cost for the Main E130 fault is £100-£220 including labour.

E130 High

Main E130 Fault Code

Q: What does the Main E130 fault code mean?

Your boiler has shut down because a sensor has detected that the exhaust gases are becoming too hot, which is a safety feature to prevent damage.

The Main E130 fault code means: your boiler has shut down because a sensor has detected that the exhaust gases are becoming too hot, which is a safety feature to prevent damage.. It appears on 3 Main models in our database.

Technical description: Flue negative thermistor coefficient (NTC) sensor operated

What causes the Main E130 fault?

This fault occurs when the internal temperature of the exhaust gases exceeds a safe limit, triggering a safety shut-off to protect the boiler. The most common reasons are a build-up of debris or limescale inside the main heat exchanger which prevents heat from transferring to the water, or damaged internal insulation that is allowing too much heat to reach the sensor.

Typical repair cost £100-£220 (including labour)

Engineer required

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

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Main models that show the E130 fault code

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

Source

Main E130 fault code information on this page is sourced and cross-checked against the official Main service / installation manuals for each affected model.

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