What It Means
- Compressor capacity status C 1 or C 2 while running with conventional 24VAC noncommunicating thermostat.
Lennox Split & Multi-Split
Lennox Error Code C1
Split & Multi-Split: Heat pump (outdoor)
Causes & actions from Lennox
How it shows
- Outdoor control 7-segment display: C1
Compressor capacity display when the EL21KLV unit is installed with a conventional 24VAC non-communicating thermostat.
Other manual wording (1 of 4)
EL22KCV
When the EL22KCV unit is installed with a conventional 24VAC non-communicating thermostat the display will show C 1 (compressor capacity stage 1).
Other manual wording (2 of 4)
EL18XCV
When the compressor is running and the EL18XCV unit is installed with a Conventional 24VAC non-communicating thermostat, the display will show C 1 (compressor capacity stage 1).
Other manual wording (3 of 4)
EL19KPV
When the compressor is running and the unit is installed with a conventional 24VAC non-communicating thermostat, the 7-segment display shows C 1 (compressor capacity stage 1).
Other manual wording (4 of 4)
EL18XPV
When the compressor is running, the 7-segment display will show the compressor capacity. When installed with a conventional 24VAC non-communicating thermostat the display will show C 1 or C 2.
Applicable models & manual sources
- EL21KLV
Compressor capacity status C 1 or C 2 while running with conventional 24VAC noncommunicating thermostat.
- EL22KCV
Compressor capacity status C 1 or C 2 while running with conventional 24VAC noncommunicating thermostat.
- EL18XCV
Compressor capacity status C 1 or C 2 while running with conventional 24VAC noncommunicating thermostat.
- EL19KPV
Compressor capacity status C 1 or C 2 while running with conventional 24VAC noncommunicating thermostat.
- EL18XPV
Compressor capacity status C 1 or C 2 while running with conventional 24VAC noncommunicating thermostat.
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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