Low
OC on Heatline Solaris 24PC

Your boiler is working normally and is simply indicating that an outdoor temperature sensor is active and helping to adjust your heating efficiency.

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

From this model's manual
Verified against the Heatline/Heatline Solaris Combi installation & service manual.
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 fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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All 12 fault codes on the Solaris 24PC

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

CCF0F1F2F3F4F5F6F7F8F9

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