Monarch
Water Hammer / Rapid Valve Closure
Softener makes loud banging or hammering noises during regeneration
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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
High mains pressure, Fast-closing Monarch valve without hammer arrestor, Long unrestrained pipe runs, Loose pipe clips
How to Fix / Troubleshooting
Safety first: Do not attempt to adjust mains pressure regulators unless qualified.
- Check pipe supports: Inspect visible pipework around the softener and secure any loose pipes with proper clips.
- Install hammer arrestor: Fit a water hammer arrestor or shock absorber on the supply line near the softener, following manufacturer instructions.
- Check pressure: Measure mains pressure. If excessively high, consult a plumber to fit or adjust a pressure reducing valve.
- Adjust regeneration time: Schedule regeneration for night hours when water usage is low to minimise disturbance.
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Repair Difficulty
Medium
3/5
Required Part
Water Hammer Arrestor (Accessory)
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