How much does it cost to fix Vokera error code 37?

Typical repair cost for the Vokera 37 fault is £250-450 including labour.

37 High

Vokera 37 Fault Code

Q: What does the Vokera 37 fault code mean?

Your boiler has detected that the internal fan is spinning too fast, which is preventing the system from starting safely.

The Vokera 37 fault code means: your boiler has detected that the internal fan is spinning too fast, which is preventing the system from starting safely.. It appears on 3 Vokera models in our database.

Technical description: fan error (high rpm)

What causes the Vokera 37 fault?

This fault occurs when the boiler's control board detects that the fan is spinning at a higher speed than required for safe combustion. It is typically caused by a failing hall effect sensor within the fan motor or a software error on the main circuit board that can no longer regulate the voltage correctly.

Typical repair cost £250-450 (including labour)

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 37 fault code

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

Source

Vokera 37 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