What It Means
- LINE PHASING MISMATCH
Lennox Unit controller
Lennox Unit controller Error Code 126
Unit controller
Causes & actions from Lennox
How it shows
- M4 alarm code: 126
During power up or reset of unit, Mismatch on single or 3 phase power, or reverse rotation on 3 phase detected. This alarm is enabled by the Phase Voltage Detection feature.
Applicable models & manual sources
- MODEL L - M4 UNIT CONTROLLER
LINE PHASING MISMATCH
MODEL L - M4 UNIT CONTROLLER, M4 Unit Controller
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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