Heat Siphon Electrical Noise / Interference

Unit operates but causes noticeable humming or buzzing in nearby electrical equipment.

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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 contactor coil, Vibrating transformer, Poor grounding, Shared circuits with sensitive electronics

How to Fix / Troubleshooting

Safety first: Turn off power before touching any electrical components.

  • Inspect contactor and transformer: With the cover off, listen carefully (power on, extreme caution) to identify the source of buzzing. Then power off and tighten mounting screws.
  • Check grounding: Ensure the equipment ground is securely connected to the heater and to the service panel.
  • Dedicated circuit: Confirm the Heat Siphon is on a dedicated circuit as recommended. Avoid sharing with sensitive electronics.
  • Replace noisy components: If the contactor or transformer is excessively noisy, replace with OEM parts.
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Repair Difficulty

Medium 3/5

Required Part

Contactor
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