What It Means
- CRITICAL LOSS OF CHARGE COMPRESSOR 3
Lennox Unit controller
Lennox Error Code 197
Unit controller
Causes & actions from Lennox
How it shows
- M4 alarm code: 197
Critical Loss of Charge Compressor 3. In Model L this is determined by temperature readings from sensors on the coils.
Applicable models & manual sources
- MODEL L - M4 UNIT CONTROLLER
CRITICAL LOSS OF CHARGE COMPRESSOR 3
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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