How much does it cost to fix Vokera error code E 36?

Typical repair cost for the Vokera E 36 fault is £150-250 including labour.

E 36 High

Vokera E 36 Fault Code

Q: What does the Vokera E 36 fault code mean?

Your boiler has lost the ability to detect the flow of water, so it has shut down to prevent damage from overheating.

Also written as E36 — same fault.

The Vokera E 36 fault code means: your boiler has lost the ability to detect the flow of water, so it has shut down to prevent damage from overheating.. It appears on 1 Vokera model in our database.

Technical description: Open circuit on flow sensor

What causes the Vokera E 36 fault?

This fault occurs when the boiler's internal computer can no longer detect a signal from the sensor that monitors the temperature of the water leaving the heat exchanger. It is usually caused by the sensor failing internally or a loose connection in the wiring that links the sensor to the main control board.

Typical repair cost £150-250 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Vokera models that show the E 36 fault code

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

Hydra Repair: £150-250

Source

Vokera E 36 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