Surelight Control Cooling Sequence - Lennox G24M SERIES Unit Information

NORMAL COOLING MODE
IGNITION CONTROL MAIN POWER ON.
CONTROL SELF DIAGNOSTIC CHECK.
IS CONTROL OPERATING NORMALLY?
TURN INDUCER ON FOR 1 SECOND.
SIGNAL IMPROPER
GROUND AT LED.
NO
SIGNAL HOLDS
UNTIL UNIT IS
PROPERLY
GROUNDED.
ROLLOUT SWITCH MONITORED CONTINUOUSLY.
IS ROLLOUT SWITCH CLOSED?
CHECK FOR MAIN BURNER FLAME SENSE.
IS MAIN BURNER FLAME OFF?
LED: SLOW FLASH RATE REMAINS UNCHANGED
THROUGHOUT COOLING CYCLE.
THERMOSTAT CALLS FOR COOLING.
COMPRESSOR CONTACTOR AND SYSTEM FAN
ENERGIZED WITH 0-SECOND DELAY
ACB COOL SPEED AND ACC. TERM. ENERGIZED.
ACB COOL SPEED AND ACC. TERM. OFF

SURELIGHT CONTROL COOLING SEQUENCE

POWER ON
YES
IS POLARITY REVERSED?
NO
YES
IS THERE
PROPER GROUND?
YES
THERMOSTAT OPENS.
COMPRESSOR OFF.
WITH 0-SECOND DELAY.
GAS VALVE OFF. COMBUSTION AIR BLOWER OFF.
NO
INDOOR BLOWER OFF WITH NORMAL DELAY.
SIGNAL CIRCUIT BOARD FAILURE AT LED.
INTERRUPT MAIN POWER TO RESET CONTROL.
YES
SIGNAL POLARITY REVERSED AT LED.
NO
IS VOLTAGE
ABOVE 75 VOLTS?
GAS VALVE OFF. COMBUSTION AIR BLOWER OFF.
NO
INDOOR BLOWER OFF WITH NORMAL DELAY.
SIGNAL CIRCUIT BOARD FAILURE AT LED.
SEQUENCE HOLDS UNTIL ROLLOUT SWITCH CLOSES.
GAS VALVE OFF. COMBUSTION AIR BLOWER OFF.
NO
INDOOR BLOWER OFF WITH NORMAL DELAY.
SIGNAL CIRCUIT BOARD FAILURE AT LED.
SEQUENCE HOLDS UNTIL FLAME IS NOT SENSED.
3DJH 
ABNORMAL COOLING MODE
LOW VOLTAGE SIGNAL AT LET HOLDS
UNTIL VOLTAGE RISES ABOVE 75 VOLTS.