BoilerFaultCodesTechnical description
Inverter Error
What causes this fault?
This fault occurs when the internal electronics that manage the power supply to the heat pump's compressor fail or detect an electrical irregularity. The most common reason is an overheating or malfunctioning inverter board, which prevents the system from being able to safely ramp up the motor to generate heat.
This issue can become more frequent during summer heatwaves or periods of extreme cold when the inverter is under high electrical load to maintain performance.
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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