BoilerFaultCodesWhat the manual says
Manufacturer manualGreen LED FLASHING 2 Per Sec., Red LED OFF
Shared across the Suprima 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
Check that your room thermostat or heating programmer is turned up and set to schedule an active heating period.Turn the boiler's internal or external temperature controls up to maximum to trigger a call for heat.If the heating still does not fire up, try resetting the boiler using its main power switch or reset button.
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Boiler cover options
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A cover plan would handle faults like Ext. Call for Heat (STNDBY switch to ON, Temp. Control set to Max.): no call-out fees, no surprise bills.
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All 9 fault codes on the Suprima
Seeing a different code? Every code this model can display, in one place.