BoilerFaultCodesWhat the manual says
Manufacturer manualCompressor Start Error
What causes this fault?
This fault occurs when the heat pump's compressor tries to turn on but cannot reach its required operating speed. It is usually caused by an electrical component failing to provide the initial 'push' needed to start the motor, or a blockage preventing the internal parts from moving freely.
This issue is more frequent during the first cold snap of autumn, as components that have sat idle during the summer may struggle to restart under increased demand.
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.
Avoid the next call-out bill
A cover plan would handle faults like L5E: no call-out fees, no surprise bills.
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