BoilerFaultCodesYour boiler has shut down because a safety sensor has detected that the exhaust gases are getting too hot, which can be caused by a blockage or an internal component failure.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Flue thermostat sensor tripped and locked out
What causes this fault?
This fault occurs when a safety sensor detects that the exhaust gases leaving your boiler have reached a dangerously high temperature. It is usually caused by a build-up of debris or limescale inside the main heat exchanger, which prevents heat from being transferred to your water and instead sends it out through the flue. In some cases, the sensor itself may have failed or there could be a blockage in the chimney preventing the hot air from escaping.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A boiler cover plan would cover faults like E130 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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