Boiler cycles on and off rapidly without reaching set temperature

Safety: Short cycling reduces efficiency and can damage components over time.

• Check controls: Ensure room thermostat and TRVs are correctly set and not located too close to the boiler or heat sources.
• System volume: If many radiators are turned off, open more to increase water volume and heat demand.
• Sensor check: Have a technician verify NTC sensor readings and replace if they are out of specification.
• Professional assessment: A heating engineer can adjust boiler parameters (if available) and assess whether system modifications (e.g., buffer tank) are needed.