BoilerFaultCodesTechnical description
The safety temperature sensor has measured temperature in excess of 95°c
What causes this fault?
This fault occurs when the water inside the boiler’s heat exchanger becomes too hot, triggering a safety shutdown to prevent damage. The most common reasons are a pump failure that stops water from moving through the system or a blockage caused by a buildup of debris and sludge. In some cases, the internal sensor itself may have failed and is providing an incorrect temperature reading to the control board.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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