Lennox G32 SERIES Unit Information

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HEATING SEQUENCE CONTINUED
NORMAL HEATING MODE ABNORMAL HEATING MODE
IGNITION SEQUENCE BEGINS
(Ignition trial counter initiated.)
FLAME RECTIFICATION CURRENT CHECK
(u0.20 microamps)
W2 TIMED MODE
SINGLE STAGE T’STAT
SINGLE−STAGE MODE
HIGH HEAT ONLY
INDOOR BLOWER
ON LOW SPEED
PREPURGE
15 SECONDS
INDOOR BLOWER
ON HIGH HEATING SPEED
GAS VALVE
DE−ENERGIZED
NO
IGNITOR WARM−UP
(20 SECONDS)
TWO−STAGE MODE
CALL FOR 1st STAGE HEAT
GAS VALVE OPEN
HIGH AND LOW HEAT
MAIN GAS VALVE OPEN
LOW HEAT ONLY
MAIN GAS VALVE OPEN
LOW HEAT ONLY
SECOND STAGE
TIME ON BEGINS
4 SECONDS
FLAME PRESENT?
(Response time −− 2 seconds maximum.)
INDOOR BLOWER ON DELAY BEGINS
(45 seconds.)
W2 TIMED MODE
SINGLE STAGE T’STAT
SINGLE−STAGE MODE
HIGH HEAT ONLY
TWO−STAGE MODE
CALL FOR 1st STAGE HEAT
FLAME PRESENT?
(Continuous flame check)
FLAME SIGNAL
(u0.60 microamps)
PRIMARY LIMIT SWITCH CLOSED?
ROLLOUT SWITCH CLOSED?
PRESSURE SWITCH CLOSED?
(CONTINUED ON NEXT PAGE)
CONTROL CHECKS RETRY
FOR IGNITION COUNT.
HAVE FOUR RETRIES
BEEN COMPLETED?
WATCHGUARD 60 MINUTE DELAY: FLAME
FAILURE. GAS VALVE OFF. COMBUSTION
AIR INDUCER OFF. INDOOR BLOWER OFF.
LED #1 & LED #2 ALTERNATE SLOW FLASH.
NO YES
LOW FLAME SIGNAL
LED #1 −− SLOW FLASH
LED #2 −− FAST FLASH
GAS VALVE DE−ENERGIZED.
COMBUSTION AIR INDUCER DE−ENERGIZED.
INDOOR BLOWER ON.
LED #1 − SLOW FLASH; LED #2 − ON.
GAS VALVE DE−ENERGIZED.
COMBUSTION AIR INDUCER DE−ENERGIZED.
INDOOR BLOWER OFF DELAY (Selected time)
LED #1 −− ON
LED #2 −− SLOW FLASH
WATCHGUARD LIMIT SWITCH: GAS
VALVE OFF. COMBUSTION AIR AND
INDOOR BLOWER OFF. LED #1−SLOW
FLASH LED #2 ON. IS 60 MINUTE
RESET PERIOD COMPLETE?
NO
NO
NO
NO
HAS LIMIT CLOSED?
HAS PRIMARY/SECONDARY LIMIT RESET?
(See table 2 DIAGNOSTIC CODES for limit reset operation)
YES
NO
CONTINUED ON NEXT PAGE
YES

Lennox G32 SERIES Specifications

General

Brand	Lennox
Model	G32 SERIES
Category	Furnace
Language	English