Medium Warning
91 on Vokera Easi-Heat 25

Your boiler has detected a temporary service issue that is preventing it from completing its ignition sequence, though it may resolve itself or require a simple reset.

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Temporary fault code (Refer to section 7.10)

What causes this fault?

This fault occurs when the boiler's internal computer detects a temporary electronic glitch or a weak signal during the ignition process. It is often caused by the flame sensing electrode failing to confirm that the gas has lit correctly, or a brief dip in the communication between internal control components.

DIY fix possible

Locate the mode selector switch on the front panelTurn the dial to the 'OFF/RESET' position and wait for 5 secondsTurn the dial back to the original winter or summer position to see if the error clears

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