Lennox VRF / VRV

Lennox VRF / VRV Error Code E1

VRF / VRV

E1 means different things on different VRF / VRV models. Enter your model number to see only your reading, or find your model below.

What It Means

  • Communication error between indoor and main outdoor unit
  • V33B: Comm. error with outdoor unit
  • VWMB: Communication error between indoor and outdoor units
  • VWMB: Communication error between the indoor unit and the outdoor unit.

Causes & actions from Lennox

Communication error between indoor and main outdoor unit

13 models

V22B, V33B, VCFB, VHIB, VMDB, VOSB, VOWA, VRHC, VRHCVOS01-3P, VSCA, VSEA, VVCB, VWMB

Reheat coil (indoor), VRF indoor unit (indoor)

How it shows
  • Indoor receiver display: E1

This manual entry does not list further causes or actions.

Applicable models & manual sources

Comm. error with outdoor unit

Models: V33B

How it shows
  • Indoor receiver display: E1

This manual entry does not list further causes or actions.

Applicable models & manual sources

Communication error between indoor and outdoor units

Models: VWMB

How it shows
  • Indoor receiver display: E1

This manual entry does not list further causes or actions.

Applicable models & manual sources

Communication error between the indoor unit and the outdoor unit.

Models: VWMB

How it shows
  • wired controller display: E1

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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