What the manual says
Manufacturer manualInverter Error
What causes this fault?
This fault occurs when the internal power management system fails to communicate correctly with the compressor. The most common reason is an electrical malfunction within the inverter board, which is responsible for controlling the speed and power of the unit's motor.
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 F1: no call-out fees, no surprise bills.
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All 126 fault codes on the HP290
Seeing a different code? Every code this model can display, in one place.