Error code reference
Lennox Air Conditioner Error Code E430
Compressor start failure detected by inverter (inverter code 26).
Compressor start failure detected by inverter (inverter code 26).
First step from the service manual
Check for poor connection at compressor harness, improper winding resistance, locked compressor rotor, or flooded compressor. Disconnect power to outdoor unit and restart.
The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.
MyPros+ Max
Get the full diagnostic procedure for E430.
- Step-by-step tests with expected resistance, voltage, and continuity values
- Wiring diagram references and connector pinouts from the OEM service manual
- Verified part numbers when replacement is required
Get the full procedure
$29/month · Cancel anytime · Or $9.95 3-day pass
78,000+ service manuals · 160,000+ error codes · 55+ brands
Get Started$29/month · Cancel anytime · Or $9.95 3-day pass