Hewalex
Mechanical Vibration / Internal Component Looseness
Hewalex pool heater is running but makes loud banging, knocking, or metallic noises.
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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
Loose fan blade or motor mounts, Loose compressor mounting bolts, Vibrating copper piping touching cabinet, Worn fan motor bearings
How to Fix / Troubleshooting
Safety first: Turn off power before touching any moving parts or internal components.
- Inspect fan assembly: Check that the fan blade is securely fastened to the motor shaft and not contacting the shroud.
- Check mounting bolts: Tighten compressor and fan motor mounting bolts if they are loose.
- Secure piping: Look for copper pipes that may be touching the cabinet or each other. Add rubber or foam insulation and clamps to prevent contact.
- Test run: Restore power and observe operation. If noise persists, the fan motor or compressor may have internal damage and require professional replacement.
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Repair Difficulty
Medium
3/5
Required Part
Fan Motor Assembly
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