BoilerFaultCodesTechnical description
Diagnostics code: Setting the maintenance interval (operating hours)
What causes this fault?
This code appears because your Gas Safe engineer previously programmed a countdown timer or a set number of operating hours into the boiler's control system. It is physically triggered once that internal clock reaches zero, acting as a digital nudge to ensure the appliance is inspected for safety. Unlike a mechanical failure, this is a proactive alert designed to keep the boiler running efficiently through routine maintenance.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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