Low
OC on Heatline Solaris

Your boiler has detected an outdoor temperature sensor and is adjusting its settings to match the weather outside.

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

External sensor is connected and OTC enabled

Shared across the Solaris range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
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

Check that the outdoor sensor is not covered or damagedMonitor the boiler to ensure it continues providing heating and hot water as normalConsult your manual if you wish to adjust the outdoor weather compensation settings

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All 25 fault codes on the Solaris

Seeing a different code? Every code this model can display, in one place.

0.8barE01E02E03E05E06E09E12E15E16E22E77F0F1F2F3F4F5F6F7F8F9S.13S.27

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