Keston Appliance Repair in St Loyes

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 E01 mean on a Keston C36 boiler?

Error E01 on a Keston C36 boiler indicates ignition failure - the boiler has attempted to ignite five times without success. 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 your gas supply is on and try resetting the boiler. If the error persists, contact a Gas Safe registered engineer.

What does error F9 mean on a Keston S30 boiler?

Error F9 on a Keston S30 boiler indicates an unconfigured PCB - the main circuit board requires configuration. Contact a Gas Safe registered engineer or Keston service to reconfigure the PCB.

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.

Why does my Keston combi boiler preheat periodically?

Keston combi boilers have a preheat function that fires the boiler briefly, approximately every 90 minutes, to keep water in the hot water calorifier warm. This reduces waiting time for hot water at the tap. If the boiler is installed in a bedroom or noise-sensitive area, the preheat function can be switched off using the preheat switch on the boiler.

Where do I find the serial number on my Keston boiler?

The serial number on a Keston boiler is typically found on the rating plate, which is usually located inside the front panel or underneath the boiler. The serial number is needed for warranty registration and when ordering spare parts. If you have the original service book, the serial number should also be recorded there.

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 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 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.