What It Means
- Auto pipe pairing setting error; alternateswithindooraddress andSEG3/4statusdata.
Lennox VRF / VRV
Lennox Error Code E191
VRF / VRV: VRF source unit
Causes & actions from Lennox
How it shows
- vrf outdoor pairing display: E191
Auto pipe pairing setting error. Displayed alternately with indoor unit data (SEG 1,2 = indoor unit address / SEG 3,4 = error status). If two or more indoor units have setting errors, press K2 switch to display the next indoor unit.
Applicable models & manual sources
- VRC***W4M-4G
Auto pipe pairing setting error; alternateswithindooraddress andSEG3/4statusdata.
VRC***W4M-4G, VRC***W4M-4Y
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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