[chris culver]

I have a lennox HP26 with a retrofit defrost control and no code ledger need to know what red and green status lights are

[GeoAlex]

Not sure why the codes would change from old board to new board if the new board is for the same condenser. If you dont have the old codes maybe this will help


For original board:

LED 1, LED 2, Code Meaning
====================================
OFF OFF Board failure or no power to board
ON ON Board Failure
Flash ON High Pressure switch open
ON Flash Low Pressure switch open
On Off Pressure switch lockout

Alternating flashes means the unit is in short cycle delay
Synchronized flashing means normal operation, power to board, but no call for heating or cooling.