BoilerFaultCodes.com
7b:0 Low Warning

Your boiler is having a communication problem regarding the time settings between its internal control parts.

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.

Technical description: Do not send time to LON

What causes this fault?

This fault occurs when there is a configuration error in the boiler's communication settings, specifically regarding how it shares time and date information with other linked components. It usually happens because the control system is trying to send a time signal to a network module that isn't set up to receive it, or there is a minor data mismatch between the internal boards.

Typical repair cost £0-120 (including labour)

DIY fix possible

Turn the boiler power off at the fused spur switch.Wait for 30 seconds.Turn the power back on and check if the date and time settings are correct on the display.

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