Lennox Select Equipment
Lennox Error Code E409
E409 means different things on different Lennox equipment. Choose the equipment you are working on.
Disclaimer: This information is for general reference. Code wording and instructions vary by model. Always refer to your unit's service manual.
What does it mean? Select your equipment
- Split & Multi-Split Air conditioner (outdoor), Air handler (indoor), Heat pump (outdoor) Outdoor control secondary voltage is 18VAC or less.Compressor low voltage.The secondary voltage for the air-handler has fallen below 18VAC. If this continues for 10 minutes, the icomfort thermostat will turn off…->
- Ducted Heating LSOM - Compressor low voltage.LSOM - Compressor contactor is welded.->
What should you check next?
Continue in ACLogics with guided diagnosis for your equipment and symptoms.
