Lennox Equipment not specified

Lennox Error Code 435

Equipment not specified:

What It Means

  • OD Inverter EEPROM Checksum fault

Causes & actions from Lennox

How it shows
  • iComfort S30 alert: 435
  • s30 inverter flash code: 60

Priority condition: Service Urgent Inverter internal error. • When this error occurs, the outdoor control will cycle power to the inverter by opening the contactor for two minutes – moderate condition. • Outdoor control will cycle power to the inverter three times and then outdoor unit is locked out – critical condition. • Inverter LEDs will flash code 60. • Refer to the unit service documentation for detailed troubleshooting procedures. Priority condition: Service Urgent Inverter flash code 60. Priority condition: Service Urgent The sequence is: • Red LED: Six Flashes • Green LED: Off NOTE: Inverter normal operations with no error code present is as follows. Red LED is ON and Green LED is OFF.

Applicable models & manual sources
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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