Aquacomfort
Kettling / Boiling in Heat Exchanger
Heater makes loud banging or popping noises during operation.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Heavy scale buildup inside heat exchanger, Restricted water flow, Air pockets in heater, Overfiring due to gas pressure issues
How to Fix / Troubleshooting
Safety first: Turn off gas and power. Overheating can damage the heater.
- Check water flow: Ensure the pump is running at adequate speed and the filter is clean. Verify that valves are fully open and bypass is correctly set.
- Bleed air: Use any bleed valves on the heater manifold to remove trapped air with the pump running.
- Descale exchanger: Have a professional perform a chemical descaling of the heat exchanger to remove mineral deposits.
- Gas pressure check: A licensed gas technician should verify that manifold pressure is within Aquacomfort specifications to prevent overfiring.
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Repair Difficulty
Hard
4/5
Required Part
Heat Exchanger
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