Keston Appliance Repair in Northgate & West Green

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 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 E05 mean on a Keston C36 boiler?

Error E05 on a Keston C36 boiler indicates fan failure - the boiler cannot detect fan rotation. Contact a Gas Safe registered engineer to check the fan operation and wiring connections.

What does error E03 mean on a Keston C36 boiler?

Error E03 on a Keston C36 boiler indicates boiler overheat. Allow the boiler to cool down, check that radiator valves are open and the pump is running. Contact a qualified engineer to investigate potential blockages and pump operation.

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.

How do I adjust the hot water temperature on my Keston combi boiler?

On Keston combi boilers, the domestic hot water temperature is adjusted using the hot water temperature knob on the control panel. The temperature can be set between approximately 40 and 65 degrees Celsius. A setting of 50 to 55 degrees is recommended for safety, as this prevents scalding while being hot enough to prevent bacterial growth.

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.

Why are my radiators cold when my Keston boiler is running?

The most common causes are low boiler pressure, trapped air in the radiators, stuck thermostatic radiator valves, a faulty circulation pump, or sludge buildup. Check the pressure gauge first and repressurise if below 1.0 bar. Then try bleeding the radiators to release trapped air.

How can I save on energy bills with my Keston boiler?

Schedule an annual service to maintain peak efficiency. Keep the boiler pressure correct and bleed radiators regularly. Use programmable or smart thermostats to avoid heating when the home is empty. Turn radiators down or off in rooms that are rarely used. Consider lowering the flow temperature on modern condensing boilers.

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.