Keston Appliance Repair Service
Specialist repairs using genuine Keston spare parts
Heating
Gas Safe registered engineers for Keston boiler and hot water cylinder. Fault diagnosis, part replacement and annual servicing across West Midlands.
No hot water or heating?
Keston heating breakdowns repaired fast by Gas Safe engineers. Available seven days a week across West Midlands.
Renewable Energy
MCS-accredited installation and repair for Keston solar panel. Heat pump diagnostics, refrigerant handling and efficiency optimisation.
Heat pump underperforming?
Specialist Keston renewable energy engineers. MCS-accredited service across West Midlands.
Why Keston Appliances Need Specialist Repair
Keston appliances incorporate advanced proprietary systems that require certified engineers with brand-specific training to diagnose and repair correctly.
Keston appliances use integrated electronic diagnostics. Our engineers connect directly to Keston control boards using brand-specific tools to read fault codes and pinpoint issues accurately.
Every repair uses genuine Keston spare parts sourced directly from authorised distributors. Original components ensure compatibility, performance and longevity — backed by a manufacturer warranty.
Keston appliances must meet strict UK safety regulations. Our certified engineers follow Keston service procedures and test every repair to BS EN standards before sign-off.
Many Keston appliances feature Wi-Fi connectivity and smart home integration. Our engineers can diagnose firmware issues, reset connectivity modules and restore remote control functionality.
Common Keston Error Codes
What does error E40 mean on a Keston C36 boiler?
Error E40 on a Keston C36 boiler indicates high water pressure. Check that the filling loop is closed. If necessary, bleed a small amount of water from a radiator. If pressure continues to rise during heating, contact an engineer to check the expansion vessel.
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 F2 mean on a Keston S30 boiler?
Error F2 on a Keston S30 boiler indicates flame loss during operation. 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 if the condensate pipe is frozen and thaw if necessary. Try resetting the boiler. If the fault recurs, contact a Gas Safe registered engineer.
What does error E70 mean on a Keston Qudos boiler?
Error E70 on a Keston Qudos boiler indicates cabinet overheat. This is a serious fault requiring a service reset. Allow the boiler to cool completely and contact a Gas Safe registered engineer immediately.
What does error F3 mean on a Keston S30 boiler?
Error F3 on a Keston S30 boiler indicates a fan fault. Contact a Gas Safe registered engineer to check the fan, wiring, and speed sensor.
Frequently Asked Questions
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.
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.
How efficient are Keston boilers?
Keston boilers achieve SEDBUK efficiency ratings of 88% to 91% depending on the model, with seasonal efficiency up to 97% under Part L conditions. They are ErP A-rated and recommended by the Energy Saving Trust. The current Heat 2 range achieves Class 6 NOx emissions at less than 40mg/kWh, exceeding the Class 5 standard.
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.
Can a Keston boiler be installed in a cupboard or enclosed space?
Keston boilers can be installed in cupboards or enclosed spaces provided there is adequate ventilation and access for servicing. The boiler requires clearance around it for maintenance. Room-sealed boilers take combustion air from outside via the flue, so the cupboard does not need air vents. Always consult a Gas Safe registered engineer for installation requirements.
Areas We Cover in West Midlands
Keston appliance repair service across the ten largest towns in the county
Other Groupe Atlantic Brands
Appliances from other brands in the same corporate group are also repaired
Book a Keston Repair
Specialist Keston engineers. No-obligation quote.