BoilerFaultCodesYour boiler has detected very cold weather and has finished running its automatic cycle to prevent the pipes from freezing.
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: Displayed when the boiler shuts down after reaching the frost protection target temperature.
What causes this fault?
This code appears when the boiler's internal sensors detect that the water temperature has dropped low enough to risk freezing the system. The boiler automatically fires up to circulate heat through the pipes and then shuts down once a safe temperature has been reached. It is a sign that the safety features are working correctly to protect your home from burst pipes during cold spells.
This code is exclusively seen during the winter months or during periods of extreme freezing weather.
DIY fix possible
Check that your external condensate pipe is not frozenEnsure your thermostat is set to your desired temperatureMonitor the boiler as it should return to normal operation automatically once the temperature rises
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