What the manual says
Manufacturer manualRAM error
What causes this fault?
This fault occurs when the boiler's main control board experiences a memory failure, preventing it from storing or reading vital operational data. It is typically caused by a hardware malfunction within the circuitry or an electrical surge that has corrupted the board's internal processors.
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 A09: no call-out fees, no surprise bills.
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Related fault codes
All 51 fault codes on the Condexa Pro
Seeing a different code? Every code this model can display, in one place.