High
14 on Daikin EKOMBG 22

Your boiler has detected trapped air in the pipes or a fault with the sensor that monitors water temperature, causing the system to stop working to avoid overheating.

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.

What the manual says

Manufacturer manual

Sensor fault S1: Air in the installation. Purge the air from the boiler and CH installation. Check the connection of the ntc on the hot water tube. Check wiring for break. Replace S1.

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We could not tie this code to a specific manual. Treat it as indicative only.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

All 22 fault codes on the EKOMBG 22

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