How much does it cost to fix Daikin error code E1-72?

Typical repair cost for the Daikin E1-72 fault is £180-450 including labour.

E1-72 High

Daikin E1-72 Fault Code

Q: What does the Daikin E1-72 fault code mean?

Your boiler has detected an internal communication error with its ignition system and has locked itself out for safety.

Also written as E172 — same fault.

The Daikin E1-72 fault code means: your boiler has detected an internal communication error with its ignition system and has locked itself out for safety.. It appears on 1 Daikin model in our database.

Technical description: SCOT flame amplifier – reset the boiler

What causes the Daikin E1-72 fault?

This fault occurs when the boiler's main control board loses touch with the electronic system that manages the flame. It is usually caused by a component failure on the circuit board or a faulty sensing electrode that can no longer confirm the burner has lit safely. Because the boiler cannot guarantee the flame is under control, it shuts down instantly to prevent any safety risks.

Typical repair cost £180-450 (including labour)

DIY fix possible

Locate the power button/reset icon on the boiler's control panelPress and hold the reset button for 5 secondsWait for the boiler to restart; if the code persists or returns immediately, you must call a Gas Safe engineer

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Daikin models that show the E1-72 fault code

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

D2CND Repair: £180-450

Source

Daikin E1-72 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