Noisy Heat Exchanger

Noisy heat exchanger (‘kettling’ and/or banging)

Fault	Fix
Magnetite / rust blockages in waterways	Chemical cleanse system
Pump head failing (not at full capacity)	replace pump head
Boiler control thermostat faulty (causing overheat stat to trip)	replace thermostat

General ways to reduce boiler noise

• Add Central heating inhibitor
• Add a Boiler filter
• Check the pump for seizure
• Check for limescale – heat exchanger
• Check for Air locks in the system
• Check the system for leaks
• Power Flush the heating system

Other Issues to check

• Noisy Fan
• Noisy Pump
• Noisy Hot Water Flow Switches
• Noisy Solenoid
• Burner Not Igniting
• Boiler Fan Problems
• Boiler Shuts Down
• Explosive Ignition
• Blocked Plate Exchanger