Sun Country Highway
Mechanical Vibration of Contactor or Transformer
Charger hums loudly or makes buzzing noises during charging.
Advertisements
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.
Advertisements
Possible Causes
Aging or loose main contactor, Loose mounting hardware on internal transformer or choke, AC line voltage distortion, Contactor coil not receiving full voltage
How to Fix / Troubleshooting
Safety first: Noise often comes from energized components. Do not touch internal parts with power on.
- Identify noise source: Carefully listen to locate whether the sound comes from the main contactor, transformer, or another component.
- Check mounting: With power off, tighten mounting screws for the contactor, transformer, and any inductors or chokes.
- Inspect contactor: If the contactor shows signs of wear or pitting, or if the noise is excessive, replace it with the Sun Country Highway-specified part.
- Verify supply voltage: Have an electrician check for abnormal voltage or harmonics that could cause excessive buzzing.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Main Power Contactor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements