What the manual says
Manufacturer manualThe "overheat" indicator light will be illuminated if the appliance needs resetting. Any interruption to the electricity supply may cause the device to operate. Indicates an appliance or system fault if persistent.
Shared across the Solo 3 PFL System range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
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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Related fault codes
All 18 fault codes on the Solo 3 PFL System
Seeing a different code? Every code this model can display, in one place.