Low
09 on Main Eco Compact

Your boiler has detected a minor internal communication glitch and has temporarily stopped working as a safety precaution, but it should return to normal once you reset it.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

resettable error

From this model's manual
Verified against the Main Eco Compact installation & service manual, page 64.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Locate the Reset button on the front control panel.Press and hold the Reset button for approximately 3 to 5 seconds.Wait for the boiler to restart and check if the display shows normal operation.

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