What the manual says
Manufacturer manualThe appliance is switched off via the master switch or there is no power supply to the appliance.
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 Blue indicator light off: no call-out fees, no surprise bills.
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All 35 fault codes on the Greenstar 24i / 28i Junior
Seeing a different code? Every code this model can display, in one place.
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