Keston Appliance Repair in Duryard and St James

What does error E02 mean on a Keston Qudos boiler?

Error E02 on a Keston Qudos boiler indicates ignition failure after five attempts. If you smell gas, do not operate any switches or appliances, ventilate the area if safe to do so, evacuate the property, and call the gas emergency services from outside. Otherwise, check that gas supply is on, the flue terminal is clear, and the condensate pipe is not blocked. Try resetting the boiler. If the fault persists, contact a Gas Safe registered engineer.

What does error E07 mean on a Keston C36 boiler?

Error E07 on a Keston C36 boiler indicates flue overheat, which may signal a heat exchanger problem. Contact a Gas Safe registered engineer immediately for professional inspection.

What does error F1 mean on a Keston S30 boiler?

Error F1 on a Keston S30 boiler indicates low water pressure. Repressurise the system using the filling loop until the gauge shows approximately 1.2 bar. If pressure continues to drop, check for visible leaks and contact an engineer.

What does error E02 mean on a Keston C36 boiler?

Error E02 on a Keston C36 boiler indicates false flame detection - the boiler is detecting a flame signal before ignition has started. This requires a Gas Safe registered engineer to check the power supply polarity and flame sensing electrode.

What does error E37 mean on a Keston C36 boiler?

Error E37 on a Keston C36 boiler indicates low water pressure. Use the filling loop to repressurise the system to approximately 1.2 bar. If pressure drops repeatedly, check for leaks and contact an engineer.

How often should my Keston boiler be serviced?

Keston boilers should be serviced annually by a Gas Safe registered engineer. This annual service maintains operational efficiency and safety. The best time to arrange a service is during summer when engineers are less busy.

What should I do if my Keston boiler does not work after a power cut?

After a power cut, first check that the electrical supply has been restored. Check the system pressure is between 1.0 and 1.5 bar. Press the Restart button on the boiler fascia. You may also need to reset the programmer clock to the correct time. If an error code is displayed or the boiler fails to restart, contact a Gas Safe registered engineer.

What error codes indicate a frozen condensate pipe on a Keston boiler?

On Keston Combi and System boilers, error codes L2 or F2 indicate possible frozen condensate. On Keston Heat boilers, the display shows "Check Condense". On Heat 2 boilers, ignition lockout or flame loss fault codes may appear. The boiler may also make a gurgling noise. If in doubt, contact a Gas Safe registered engineer.

What is twin flue technology on Keston boilers?

Twin flue technology uses two separate pipes for air intake and exhaust gases, rather than a single concentric flue. This allows the flue to extend up to 27 metres from the boiler, compared to around 10 metres for standard concentric systems. Twin flue is ideal for installations where the boiler cannot be positioned near an external wall, such as basements or internal plant rooms.

How do I reset my Keston boiler after a fault?

For most Keston models, press the Restart button on the boiler fascia. For models with a mode control knob, turn it to the Reset position, then immediately return it to the On position. Switching the boiler off and on at the mains will not clear a fault lockout.