Possible causes

  • Overload.
  • Loose connections.
  • Poor ventilation.
  • Clogged ventilation filters.
  • Worn contactors or switches.

Inspection

We measure temperatures and currents, check connections, and compare if any component is significantly hotter than the others.

When it is serious

When there is a smell of burning, charring, or melted plastic, the panel must be inspected immediately.