Lennox Split & Multi-Split

Lennox Split & Multi-Split Error Code E201

Split & Multi-Split

E201 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: Indoor Blower communication failure - (includes indoor blower power outage)
  • 3WPD036S6S-1P: Communication error between the indoor unit and outdoor unit (Pre-tracking failure or when the actual number of indoor units are different from the indoor unit quantity setting on the outdoor unit) Error due to communication tracking failure after initial power is supplied (The error occurs regardless of the number of units.)

Causes & actions from Lennox

Indoor Blower communication failure - (includes indoor blower power outage)

Models: CBX40UHV

Air handler (indoor)

How it shows
  • Single-character display: E201

This manual entry does not list further causes or actions.

Applicable models & manual sources

Communication error between the indoor unit and outdoor unit (Pre-tracking failure or when the actual number of indoor units are different from the indoor unit quantity setting on the outdoor unit) Error due to communication tracking failure after initial power is supplied (The error occurs regardless of the number of units.)

Models: 3WPD036S6S-1P

Mini-split unit (outdoor)

How it shows
  • mini outdoor inverter pcb: E201
  • Mini-split outdoor main board: E201

Check indoor quantity setting in outdoor

Applicable models & manual sources
  • 3WPD036S6S-1P

    Communication error between the indoor unit and outdoor unit (Pre-tracking failure or when the actual number of indoor units are different from the indoor unit quantity setting on the outdoor unit) Error due to communication tracking failure after initial power is supplied (The error occurs regardless of the number of units.)

    3WPD036S6S-1P manual, page 38

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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