What the manual says
Manufacturer manualStandby - no demand for heat.
Community-sourced, unverified
We could not tie this code to a specific manual. Treat it as indicative only.
DIY fix possible
Check that your room thermostat is turned up higher than the current room temperature.Ensure your heating programmer or timer is set to 'ON'.Check that there are no blown fuses or tripped switches in your electrical consumer unit.
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All 45 fault codes on the Instinct2 24
Seeing a different code? Every code this model can display, in one place.