Boiler frequently short cycles on central heating, turning on and off every few minutes, rooms never reach set temperature comfortably.

Safety: Adjust only user-accessible controls unless you are a qualified engineer.

• Check thermostat location: Ensure the room thermostat is not near heat sources, direct sunlight, or in a draught.
• Adjust radiator balancing: Partially close lockshield valves on radiators that heat up very quickly to encourage more even heat distribution.
• Lower CH flow temperature: If your Biasi boiler allows, reduce the CH flow temperature slightly to lengthen run times.
• Engineer optimisation: A technician can adjust boiler parameters (where allowed), check modulation, and advise on system design improvements.