Lennox EL297DFV Series Unit Information page 26

Ignition Control 103130-XX Diagnostic Codes
Code Diagnostic Codes/Status of Equipment
E406 LSOM - Compressor open start circuit.
E407 LSOM - Compressor open run circuit.
E408 LSOM - Compressor contactor is welded.
E409 LSOM - Compressor low voltage.
Action Required to Clear and Recover
Required amount of current is not passing through Start cur-
rent transformer. Clears the error after current is sensed in
START sensor, or after power reset.
Required amount of current is not passing through Run current
transformer. Clears the error after current is sensed in RUN
sensor, or 1 normal compressor run cycle, or after power reset.
Compressor runs continuously. Clears the error after 1 normal
compressor run cycle or after power reset.
Secondary voltage is below 18VAC. After 10 minutes, oper-
ation is discontinued. Clears the code after voltage is higher
than 20 VAC for 2 seconds or after power reset.
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