A 16 High

Vokera A 16 Fault Code

Also written as A16 — same fault.

The Vokera A 16 fault code means: your boiler's computer is experiencing a temporary glitch that has caused it to stop working for safety.. It appears on 1 Vokera model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Internal software error. Press the reset key. If the error is permanent replace the circuit board.
Typical repair cost £250-450 (including labour)

DIY fix possible

Locate the reset button or dial on the front of your boiler control panel.Press and hold the reset button for 3 to 5 seconds.Wait 5 minutes to see if the boiler restarts and the code disappears.

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Vokera models that show the A 16 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Vokera A 16 fault code information on this page is sourced and cross-checked against the official Vokera service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026