Lennox VRF / VRV

Lennox VRF / VRV Error Code E403

VRF / VRV: VRF indoor unit (indoor)

What It Means

  • 12. The compressor stops due to freeze detection (6th detection)

Causes & actions from Lennox

How it shows
  • vrf 360 fault code: E403
  • vrf 360 indoor indicator: ice_blue: off, yellow_green: off, blue: flashing, red: off (blue: flashing, ice_blue: off, red: off, yellow_green: off)

This manual entry does not list further causes or actions.

Applicable models & manual sources
Disclaimer: This information is for general reference. Code wording and instructions vary by model. Always follow the service manual for your exact unit.

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