Continuous Low Speed Fan Sequence Of Operation - Lennox G24M SERIES Unit Information

CONTINUOUS LOW SPEED FAN SEQUENCE OF OPERATION

MANUAL FAN SELECTION MADE AT THERMOSTAT.
THERMOSTAT CALLS FOR COOLING.
YES
SYSTEM FAN SWITCHED TO ACB COOL
SPEED. ACC. TERM. REMAINS ON.
THERMOSTAT OPENS.
MANUAL FAN SELECTION MADE AT THERMOSTAT.
CONTROL (G) ENERGIZES SYSTEM FAN AT ACB
LED: SLOW FLASH RATE REMAINS
UNCHANGED THROUGHOUT SEQUENCE.
CONTROL (G) ENERGIZES SYSTEM FAN AT ACB
LOW SPEED. ACC. TERMINAL IS ENERGIZED.
THERMOSTAT CALLS FOR HEAT (W).
NO
NO
LOW SPEED. ACC. TERM. ENERGIZED.
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HTG ACC. TERM. ENERGIZES
WITH COMB. AIR BLOWER.
YES
BOARD NO. 63K8901
SYSTEM FAN DE-ENERGIZED. SYSTEM FAN
ENERGIZES ON ACB HEAT SPEED AFTER
NORMAL DELAY.
BOARD NO. 24L85, 56L83, 97L48
SYSTEM FAN SWITCHES TO ACB HEAT SPEED
AFTER NORMAL DELAY (fan remains energized)
THERMOSTAT OPENS. COMBUSTION AIR
AND HTG ACC TERMINAL DE-ENERGIZE.
BOARD 63K89: SYSTEM FAN OFF. ACC. TERM.
OFF. (AFTER OFF DELAY COMPLETED).
BOARDS 24L85, 56L83 AND 97L48:
SYSTEM FAN SWITCHES TO
LOW SPEED AFTER NORMAL DELAY.
(fan remains energized)