BoilerFaultCodesWhat the manual says
Manufacturer manualExternal sensor is connected and OTC enabled
Shared across the Vizo Plus 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.
DIY fix possible
No action is required as this is an advisory notification rather than a breakdown.Check your thermostat settings to ensure the heating is coming on at your preferred times.If you did not intend to have an outdoor sensor, contact a technician to check the wiring.
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All 26 fault codes on the Vizo Plus
Seeing a different code? Every code this model can display, in one place.