S9200U Installation Guide

S9200U1000 UNIVERSAL HOT SURFACE IGNITION INTEGRATED FURNACE CONTROL
69-2075EF—05 18
Fig. 9. S9200U1000 sequence - Call for Heat cycle.
LIMIT
SWITCH
CLOSED?
INDUCER ON
PRESSURE
SWITCH
CLOSED WITHIN 150
SECONDS?
PREPURGE
GAS VALVE
ENERGIZED
FLAME
SENSED WITHIN
IGN. ACTI-
VATION?
CIRCULATOR ON AFTER
HEAT FAN ON DELAY
EXPIRES (HEAT SPEED)
YES
YES
YES
ERROR
CODE
FLASHES
NO
ERROR CODE
FLASHES (AFTER
5 SECONDS)
NO
3RD
UNSUCCESSFUL
TRIAL?
INDUCER OFF
INTERPURGE
INDUCER OFF
NO
NO
ROLLOUT
CIRCUITS
CLOSED?
ERROR
CODE
FLASHES
CIRCULATOR
ON
(HEAT SPEED)
INDUCER ON
NO
CALL FOR HEAT
(START
SAFETY CHECK)
NO
GAS VALVE
DE-ENERGIZED
H.S.I. OFF
H.S.I. ON - H.S.I. WARMUP
YES
WAIT MODE
(5 MINUTES)
1. CALL FOR HEAT
IGNITION
ACTIVATION BEGINS
HEAT FAN ON DELAY
TIMER STARTED
INTERPURGE
H.S.I. OFF
ROLLOUT
CIRCUIT
CLOSES?
NO
INDUCER
OFF
AFTER POST
PURGE
INDUCER
OFF
AFTER POST
PURGE
CIRCULATOR OFF
AFTER HEAT FAN
OFF DELAY
(HEAT SPEED)
YES
YES
1
1
M24911A
LIMIT
SWITCH
CLOSED WITHIN 3
MINUTES?
1
SOFT LOCKOUT AUTOMATICALLY RESETS AFTER ONE (1) HOUR.
2
HARD LOCKOUT REQUIRES CYCLING OF POWER TO RESET THE LOCKOUT.
HARD LOCKOUT -
ERROR CODE
FLASHES
2
PRESSURE
SWITCH
OPEN?
SOFT LOCKOUT -
ERROR CODE
FLASHES
1
CALL FOR
HEAT
SATISFIED?
NO
GAS VALVE
DE-ENERGIZED
INDUCER OFF AFTER
POST PURGE PERIOD
CIRCULATOR OFF AFTER
HEAT FAN OFF DELAY
(HEAT SPEED)
1
YES
CIRCULATOR
ON
(HEAT SPEED)
INDUCER ON
WAIT UNTIL
LIMIT SWITCH
CLOSES
CIRCULATOR OFF
AFTER HEAT FAN
OFF DELAY
(HEAT SPEED)
SOFT LOCKOUT -
ERROR CODE
FLASHES
1
NO
YES
PRESSURE
SWITCH
OPENS?
ERROR
CODE
FLASHES
NO
YES
1
FLAME RECOG-
NITION BEGINS
FLAME
SENSED WITHIN
FL. RECOG-
NITION?
YES
1
NO
ERROR
CODE
FLASHES
YES
CIRCULATOR OFF AFTER
HEAT FAN OFF DELAY
(HEAT SPEED)