H5
Westinghouse IPM (Inverter Power Module) Protection / Outdoor Drive Fault

Display shows H5 and unit stops; may be associated with outdoor fan issues.

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

Shorted compressor or fan motor, failed inverter IPM module, poor heat sinking of IPM, wiring short to ground

How to Fix / Troubleshooting

Safety: This is a high-voltage inverter fault. Disconnect power and do not attempt to run the unit repeatedly.

User-level actions:

  • Visual inspection: Look for obvious wiring damage or burnt components in the outdoor control box.
  • Clear obstructions: Ensure the outdoor fan spins freely and is not blocked.
  • Reset: After 10–15 minutes with power off, restore power and test. If H5 returns, stop using the unit.

Professional service required: An HVAC technician must test the compressor, fan motor, and inverter module. IPM or compressor replacement involves specialized tools and safety procedures.

Advertisements

Repair Difficulty

Professional Required 5/5

Required Part

Outdoor Inverter Control Module
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements