28
CONTROLS OPERATING SEQUENCE
CO NT RO L DISP LA YS M EN U.
S ELECT M ENU IT EM
CONTROL CHECKS SURFACE
TEMPER ATURES
MONIT ORED
TEMPER ATURE IS BELO W SET PO INT
?
NO
CONTROLLER TURNS ON
POWER T O HE ATER
CONTROLLER TURNS ON
POWER T O IGNITION SYS TEM
Y ES
Y ES
SUPPLY ENERGY TO ELECTRIC
ELEMENTS UNTIL SET
TEMPER ATURE IS RE ACHED
CONTROL SUPPLIES POWER T O
PRESSURE SWITCH & BLO WER
AIR PRESSURE
PRESSURE SW. SUPPLIES
ENERGY TO IGNIT ION
MODULE
Y ES
IGNITION MODULE
SUPPLIES POWER TO
IGNITOR AND G AS VAL VE
IGNITION MODULE TEST
FOR MAIN BURNER
FLAME FOR 7 SECONDS
F LAME
GAS VALVE
OPEN
MAIN CONTROL CHECKS
GAS VALVE ST ATUS
EVERY 12 SECONDS
OPEN
CONTROL CHECKS FOR
TEMPER ATURE INCREASE
Y ES
UP TO SET TEMPER ATURE
TURN OFF PO WER AND
MONIT OR TEMPER ATURE
N O F LAME
GAS VALVE CLOSED
FLASH SECOND LED
FROM B OTTO M
“AMBER”
NO
C LOSED
TURN ZONE LIGHT RED
- SOUND AL ARM AFTER
5 MINUTES
N O
CONTINUE HEATING
Y ES
N O
FOURTH TRIAL
TURN REAR ZONE
INDICATOR T O RED,
SOUND THE ALAR M &
DISPLAY
“IGNITION F AILURE”
MAIN PO WER S W ITCH
MUST BE RESET TO
CLEAR CONTROLS
NO
CONTROL CHECKS FOR
INCREASE TE MPERATURE
UP TO
TEMPER ATURE
SOUND ALAR M
AF TER 5
MINUTES.
TURNS ZONE
LIGHT(S) RED.
NO
Y ES
TURN OFF
POWER
MONIT OR
TEMPER ATURE
CONTINUE
HEATING
NO
Y ES
