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1. CALL FOR HEAT
CALL FOR HEAT
(START
SAFETY CHECK)
ROLLOUT
CIRCUITS
CLOSED?
YES
LIMIT
SWITCH
NO
CLOSED?
YES
PRESSURE
NO
SWITCH
OPEN?
YES
INDUCER ON
PRESSURE
SWITCH
CLOSED WITHIN 150
SECONDS?
YES
PREPURGE
H.S.I. ON - H.S.I. WARMUP
GAS VALVE
ENERGIZED
IGNITION
HEAT FAN ON DELAY
ACTIVATION BEGINS
TIMER STARTED
FLAME
SENSED WITHIN
IGN. ACTI-
VATION?
YES
H.S.I. OFF
CIRCULATOR ON AFTER
HEAT FAN ON DELAY
EXPIRES (HEAT SPEED)
CALL FOR
HEAT
SATISFIED?
YES
SOFT LOCKOUT AUTOMATICALLY RESETS AFTER ONE (1) HOUR.
1
HARD LOCKOUT REQUIRES CYCLING OF POWER TO RESET THE LOCKOUT.
2
S9200U1000 UNIVERSAL HOT SURFACE IGNITION INTEGRATED FURNACE CONTROL
1
INDUCER ON
ERROR
NO
CODE
CIRCULATOR
FLASHES
ON
(HEAT SPEED)
INDUCER ON
ERROR
CODE
CIRCULATOR
FLASHES
ON
(HEAT SPEED)
ERROR CODE
FLASHES (AFTER
5 SECONDS)
YES
ERROR
NO
INDUCER OFF
CODE
FLASHES
H.S.I. OFF
NO
FLAME RECOG-
NITION BEGINS
FLAME
SENSED WITHIN
YES
NO
FL. RECOG-
NITION?
NO
GAS VALVE
DE-ENERGIZED
Fig. 9. S9200U1000 sequence - Call for Heat cycle.
NO
ROLLOUT
YES
CIRCUIT
CLOSES?
CIRCULATOR OFF AFTER
HEAT FAN OFF DELAY
(HEAT SPEED)
INDUCER
WAIT UNTIL
OFF
LIMIT SWITCH
AFTER POST
PURGE
ERROR
PRESSURE
NO
CODE
SWITCH
FLASHES
OPENS?
WAIT MODE
(5 MINUTES)
INTERPURGE
NO
3RD
GAS VALVE
UNSUCCESSFUL
DE-ENERGIZED
TRIAL?
CIRCULATOR OFF AFTER
INDUCER OFF AFTER
HEAT FAN OFF DELAY
POST PURGE PERIOD
17
CIRCULATOR OFF
INDUCER
AFTER HEAT FAN
OFF
OFF DELAY
AFTER POST
(HEAT SPEED)
PURGE
YES
LIMIT
SWITCH
CLOSED WITHIN 3
CLOSES
MINUTES?
1
YES
INTERPURGE
SOFT LOCKOUT -
ERROR CODE
FLASHES
(HEAT SPEED)
HARD LOCKOUT -
ERROR CODE
2
FLASHES
CIRCULATOR OFF
AFTER HEAT FAN
NO
OFF DELAY
(HEAT SPEED)
SOFT LOCKOUT -
ERROR CODE
1
FLASHES
1
INDUCER OFF
1
1
1
M24911A
69-2075EF—01
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Table des Matières
