Low
d.71 on Heatline Monza

Your boiler has detected that the temperature setting for your radiators has been adjusted to a value higher than what is allowed or expected by the system's memory.

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

Maximum temperature setting for heating outlet

From this model's manual
Verified against the Heatline Monza installation & service manual, page 25.
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 heating temperature control dial on the front of the boilerTurn the dial to a lower settingRestart the boiler using the reset button if it does not automatically resume normal operation

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Related fault codes

d.70View →d.72View →

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