BoilerFaultCodesWhat the manual says
Manufacturer manualHeating: No heat demand. The burner is off.
What causes this fault?
This code appears when the boiler is working perfectly but is simply waiting for a command to start. It means the internal computer has not received an electrical 'call for heat' from your wall thermostat or plug-in timer. The most common reasons are that the temperature on your thermostat is set too low, the timer is in an 'off' period, or the batteries in your controller have run out.
This is frequently seen during the transition into autumn when homeowners forget to turn their thermostats up or replace batteries after the summer break.
DIY fix possible
Check that your room thermostat is turned up higher than the current room temperatureEnsure your heating programmer or timer is set to 'Auto' or 'ON'Check that the batteries in your wireless thermostat are not dead
Avoid the next call-out bill
A cover plan would handle faults like S.00: no call-out fees, no surprise bills.
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