Poolworld
Mechanical Vibration / Fan or Blower Noise
Heater is very noisy; loud fan, rattling, or vibration 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
Worn blower motor bearings, Debris in fan wheel, Loose mounting hardware, Heater not level on pad
How to Fix / Troubleshooting
Safety first: Turn OFF power before reaching into the cabinet. Moving parts can cause injury.
- Check for debris: Inspect the blower or fan wheel for leaves, insects, or other debris and remove carefully.
- Tighten hardware: Tighten mounting screws on the blower assembly, burner tray, and cabinet panels to reduce rattling.
- Level the heater: Ensure the heater sits level on a solid pad. Shim if necessary to eliminate rocking.
- Assess motor condition: If the blower motor squeals or grinds, the bearings may be failing and the motor should be replaced.
Warning: Do not operate the heater with rubbing or scraping noises from the blower; parts can break loose and cause damage.
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Repair Difficulty
Medium
3/5
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