BoilerFaultCodesTechnical description
Dry fire
What causes this fault?
This fault occurs when the boiler's internal sensors detect a rapid, unsafe rise in temperature because water isn't flowing away from the heat exchanger quickly enough. The most common reasons are a failed internal pump that has stopped spinning or a physical blockage caused by a buildup of sludge and debris in the system pipework.
This issue often surfaces during the first cold spell of autumn when the heating is turned back on after being dormant all summer, causing stuck pump components to fail.
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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