What It Means
- CBX40UHV: Low 24 volts (18 or less volts) - Control will restart if the error recovers.
- CBK48MVT: The 24VAC to the air-handler control is lower than the required range of 18 to 30VAC.
Lennox Split & Multi-Split
Lennox Split & Multi-Split Error Code E115
Split & Multi-Split
E115 means different things on different Split & Multi-Split models. Enter your model number to see only your reading, or find your model below.
Causes & actions from Lennox
Low 24 volts (18 or less volts) - Control will restart if the error recovers.
Models: CBX40UHV
Air handler (indoor)
How it shows
- Single-character display: E115
This manual entry does not list further causes or actions.
Applicable models & manual sources
- CBX40UHV
Low 24 volts (18 or less volts) − Control will restart if the error recovers.
The 24VAC to the air-handler control is lower than the required range of 18 to 30VAC.
Models: CBK48MVT
How it shows
- Single-character display: E115
24-volt power low (range is 18 to 30 volts). Check and correct voltage. Check for addi- tional power-robbing equipment connected to system. This alarm / code may require the installation of an additional or larger VA transformer.
Applicable models & manual sources
- CBK48MVT
The 24VAC to the air-handler control is lower than the required range of 18 to 30VAC.
Disclaimer: This information is for general reference. Code wording and instructions vary by model. Always follow the service manual for your exact unit.
What should you check next?
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