Lennox Split & Multi-Split

Lennox Error Code E350

Split & Multi-Split

E350 means different things on different Split & Multi-Split models. Enter your model number to see only your reading, or find your model below.

What It Means

  • CBX40UHV: Heat call with non-configured or mis-configured electric heat. Check for proper configuring under Configuring Electric Heat Stages.
  • CBK48MVT: The air-handler's electric heat is not configured.

Causes & actions from Lennox

Heat call with non-configured or mis-configured electric heat. Check for proper configuring under Configuring Electric Heat Stages.

Models: CBX40UHV

Air handler (indoor)

How it shows
  • Single-character display: E350

This manual entry does not list further causes or actions.

Applicable models & manual sources
  • CBX40UHV

    Heat call with non−configured or mis−configured electric heat. Check for proper configuring under Configuring Electric Heat Stages.

    CBX40UHV manual, page 21

The air-handler's electric heat is not configured.

Models: CBK48MVT

How it shows
  • Single-character display: E350

Heat call with no configured or mis-configured electric heat. Configure electric heat in the air-handler. The fault clears electrical heat is successfully detected.

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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