Overheat 'stat trip High

Ideal Overheat 'stat trip Fault Code

Also written as OVERHEATSTATTRIP — same fault.

The Ideal Overheat 'stat trip fault code means: your boiler has become too hot and has automatically switched itself off to prevent any damage.. It appears on 1 Ideal model 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: Boiler exceeds 90°C or faulty thermostat. Reset by pressing the reset button (D)

What causes the Ideal Overheat 'stat trip fault?

This fault occurs when the water inside the boiler reaches a dangerously high temperature, causing a safety switch to cut the power. The most common reasons are a pump failure that stops water from moving around the system or a build-up of sludge that blocks the heat exchanger. In some cases, the thermostat itself may have simply worn out and is giving a false reading.

This fault often appears during the first cold snap of autumn when a pump that has been sitting idle all summer becomes seized or stuck.

Typical repair cost £90-180 (including labour)

DIY fix possible

Check that all radiator valves are open to allow water to flowAllow the boiler to cool down completelyPress the reset button (D) located on the control panel

Find a Gas Safe engineer

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

Gas Safe Register →

Ideal models that show the Overheat 'stat trip fault code

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

Source

Ideal Overheat 'stat trip 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