11-64 High

Daikin 11-64 Fault Code

Also written as 1164 — same fault.

The Daikin 11-64 fault code means: your boiler is having trouble lighting the gas to start the heating process and may need to be restarted.. It appears on 1 Daikin 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: Ignition error – possible fault with valve on the gas line due to it being open. Try resetting the boiler after the third unsuccessful ignition

What causes the Daikin 11-64 fault?

This fault occurs when the boiler's control system detects that the gas valve is open but it cannot successfully establish or sense a flame. The most common reasons are a physical failure of the gas valve mechanism, worn-out ignition electrodes that can no longer produce a strong spark, or a degraded spark cable that is leaking electricity before it reaches the burner.

Typical repair cost £120-£350 (including labour)

DIY fix possible

Check that your gas emergency control valve is in the 'on' positionCheck if other gas appliances in your home are workingPress the 'Reset' button on the boiler control panel up to three times

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Daikin models that show the 11-64 fault code

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

Source

Daikin 11-64 fault code information on this page is sourced and cross-checked against the official Daikin service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026