Boiler Guides

Your Vaillant boiler showing the F62 fault code usually means the gas valve is taking too long to close after the burner turns off. This safety lockout protects your home…

Your Baxi boiler displaying the E1 error code usually means the system has detected low water pressure or overheating and has safely shut down to protect itself. This common fault…

Your Worcester Bosch boiler showing the C6 error code usually means there is a problem with the fan that helps remove combustion gases safely. This fault stops the boiler from…

Your Vaillant boiler displaying the F4 error code usually means there is an ignition problem and the burner has not lit successfully. This safety lockout stops the system to prevent…

Your Worcester Bosch boiler showing the EA227 error code usually means the system tried to ignite but could not detect a flame, leading to a safe lockout. This common fault…

Your Baxi boiler showing the E50 error code usually means there is a problem with the hot water temperature sensor. This fault stops the boiler from heating water for your…

Your Baxi boiler showing the E110 error code means the system has overheated and the safety thermostat has tripped to prevent damage. This common fault stops the boiler from running…

The most common Biasi boiler error codes include ER01 for ignition failure, ER02 for overheating or safety thermostat lockout, ER04 for primary circuit or circulation faults, and ER14 for pump…

Your Baxi boiler displaying the 125 error code usually means there is a problem with water circulation, so heated water is not moving around the system as it should. This…

Your Baxi boiler showing the 117 error code usually means the water pressure inside the system has climbed too high, causing the boiler to shut down safely to avoid damage.…

Your Baxi boiler showing the E20 error code means the system has detected an issue with a temperature sensor and has safely shut down to prevent damage or unsafe operation.…

The most common Viessmann boiler error codes include F4 for no flame detected, F22 for low water pressure, F2 for burner lockout, and F75 for pump or pressure sensor problems.…