What the manual says
Manufacturer manualCentral heating standby
From this model's manual
Verified against the Ferroli Boiler Tempra 30 installation & service manual.
DIY fix possible
Check that your room thermostat is turned up high enough to call for heat.Ensure your programmer or timer is set to an 'On' period.Verify that the boiler mode is set to 'Winter' (Heating and Hot Water) rather than 'Summer' only.
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