BoilerFaultCodesVokera A16 Fault Code
The Vokera A16 fault code means: your boiler's computer memory has developed a technical fault, preventing it from remembering the settings it needs to operate safely.. It appears on 1 Vokera model in our database.
Technical description: EEPROM ERROR The contents of the EEPROM are not correct
What causes the Vokera A16 fault?
This fault occurs when the data stored on the boiler's internal memory chip becomes corrupted or unreadable. The most common reason is a power surge or a gradual component failure on the main circuit board, which effectively causes the boiler to 'forget' its critical safety and operating instructions.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Vokera models that show the A16 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera A16 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 27 April 2026