Lennox · Air Conditioning
The unit has detected that the input voltage is either too high or too low. This protection feature prevents damage to the system's components.
Click steps to track your progress.
Check the main power supply voltage to the unit.
Ensure the unit is connected to a stable and correctly rated power source.
Consult an electrician if the building's voltage is consistently outside the recommended range.
Reset the unit by turning off power at the breaker for 30 seconds and then turning it back on.