BoilerFaultCodesWarmhaus rE07 Fault Code
Also written as RE07 — same fault.
The Warmhaus rE07 fault code means: your boiler has shut down because it has detected that the water inside has become dangerously hot.. It appears on 1 Warmhaus model in our database.
Technical description: Safety thermostat intervention from dual sensor – excessive heating occuring due to any failure during normal operation, try resetting the boiler.
What causes the Warmhaus rE07 fault?
This fault occurs when the internal water temperature rises too rapidly or exceeds safe limits, triggering a safety sensor to shut the system down to prevent damage. The most common reasons are a pump failure that stops water from moving or a blockage in the heat exchanger that traps heat inside the unit.
This issue is more frequent during the first cold spell of autumn when pumps that have been idle all summer often seize up upon restarting.
DIY fix possible
Check that your radiator valves are open to allow water to flow.Ensure your system water pressure is between 1.0 and 1.5 bar.Press and hold the 'R' or Reset button for a few seconds to restart the boiler.
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Gas Safe Register →Warmhaus models that show the rE07 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Warmhaus rE07 fault code information on this page is sourced and cross-checked against the official Warmhaus service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026