Keston Appliance Repair in Ifield

What does error E24 mean on a Keston C36 boiler?

Error E24 on a Keston C36 boiler indicates water pressure has been lost four times in 24 hours, suggesting a possible leak. Check around radiators and pipework for signs of water and contact a heating engineer to locate and repair any leaks.

What does error E03 mean on a Keston C40 or C55 boiler?

Error E03 on a Keston C40 or C55 boiler indicates the gas valve is faulty or not properly connected. 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. Do not attempt any repairs. Contact a Gas Safe registered engineer immediately as gas valve faults must only be handled by qualified professionals.

What does error E67 mean on a Keston Qudos boiler?

Error E67 on a Keston Qudos boiler indicates low water pressure below 0.4 bar. Use the filling loop to repressurise the system to approximately 1.2 bar. If pressure drops repeatedly, check for leaks and contact an engineer.

What does error E52 mean on a Keston Qudos boiler?

Error E52 on a Keston Qudos boiler indicates flue overheat. This requires a service reset and professional inspection. Contact a Gas Safe registered engineer immediately.

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 is checked during a Keston boiler service?

A Gas Safe engineer will inspect for corrosion and leaks, check the flame burns blue, examine flue terminals and seals, test gas pressure and flow settings, check the expansion vessel pressure, clean the burners, and inspect all key components for wear. The boiler is also tested operationally.

How do I repressurise my Keston boiler?

Turn off the boiler and allow it to cool for at least an hour. Locate the external filling loop beneath the boiler. Attach the filling loop, open both valves slowly, and watch the pressure gauge until it reaches 1.0 to 1.5 bar. Close both valves, then remove and store the filling loop.

How do I prepare my Keston boiler for winter?

Run the boiler and radiators at maximum temperature for approximately 15 minutes to identify any problems. Check visually for signs of damage, leaks, or loose connections. Bleed your radiators to release trapped air. Check the pressure gauge and repressurise if below 1.0 bar. Insulate exposed condensate pipework to prevent freezing.

Why is my Keston boiler making unusual noises?

Gurgling usually indicates trapped air and can be resolved by bleeding radiators. Banging may indicate pressure irregularities or sediment buildup. A high-pitched whistling (kettling) suggests limescale in the heat exchanger. For persistent noises other than gurgling, contact a Gas Safe registered engineer.

What is a Keston magnetic system filter and do I need one?

A Keston magnetic system filter protects your boiler by capturing sludge, debris, and magnetic contaminants from the heating system. Installing a Keston 22mm System Filter with a Combi or System boiler extends the warranty from 5 to 7 years. The filter should be cleaned during annual servicing. It is fitted on the return pipe close to the boiler.