What the manual says
Manufacturer manualStandby - no demand for heat.
From this model's manual
Verified against the Ideal Instinct2 24 installation & service manual.
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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