BoilerFaultCodesTechnical description
Temporary fault code (Refer to section 7.10)
What causes this fault?
This fault typically occurs when the main control board loses communication with the internal temperature sensors or when those sensors report conflicting data. It acts as a temporary pause while the boiler tries to verify that the readings are accurate and safe for operation. The most common reason is a degrading sensor (NTC thermistor) that is beginning to send inconsistent electrical signals to the brain of the boiler.
DIY fix possible
Press the reset button on the front control panelTurn the selector switch to the 'OFF/RESET' position and then back to 'ON'Monitor the boiler to see if the error code clears and operation resumes
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