Boiler cycles on and off frequently, radiators never reach full temperature

Safety first: Adjust only user-accessible controls unless qualified.

User checks:

• Ensure the room thermostat is not located near a heat source or in a draught.
• Lower the boiler flow temperature slightly to reduce overshoot.
• Open all radiator valves fully and avoid shutting off too many radiators.

Engineer checks:

• Balance the heating system to ensure even heat distribution.
• Review boiler sizing relative to property heat loss.
• Consider fitting load or weather compensation controls compatible with the Potterton boiler.

Reducing short cycling improves efficiency and component life.