BoilerFaultCodesYour boiler is working correctly and is simply waiting for a request from your thermostat or hot water tap to start heating.
This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.
Technical description: Appliance is in standby or normal operating mode
What causes this fault?
This is not actually a fault, but rather the boiler confirming it has power and is ready to work. It occurs when the internal controls have checked all safety sensors and are simply waiting for you to turn up the thermostat or open a hot water tap. Once you demand heat, the light will typically change to a solid green to show the burner has lit.
This status is more frequently observed in the summer months when the central heating is turned off and the boiler spends most of its time in standby mode.
DIY fix possible
Check that your room thermostat is turned up high enough to call for heatEnsure your programmer or timer is set to 'On' or 'Auto'Open a hot water tap to see if the green light turns solid, indicating normal operation
Find a Gas Safe engineer
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A boiler cover plan would cover faults like Green LED flashing — no call-out fees, no surprises.
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Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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