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SURELIGHT®CONTROL
HEATING SEQUENCE OF OPERATION
NORMAL HEATING MODE ABNORMAL HEATING MODE
I POWER ON ] I GAS VALVE OFF. COMBUSTION AIR INDUCER ON.
_' I INDOOR BLOWER ON.
CONTROL SELF-CHECK OKAY'_ I,_ _ LED #1 ALTERNATING FAST FLASH
I " ; NO | LED#2 ALTERNATING FAST FLASH
I | CHECK FOR BROKEN IGNITOR OR
-I GAS VALVE OFF. COMBUSTION AIR INDUCER OFF.
v aYES _ INDOOR BLOWER DELAY OFF.
,sPOLARITYREVERSED? _1 I LED#1ON
I i- I I I LED #2 ON
I I NO /I I (R__ TURNING MAIN POWER OFF)
LED#1 AND LED#2 /
ALTERNATING FAST J_ 1' _ POLARITY REVERSED.
FLASH, SIGNAL NO • I LED #1 -- FAST FLASH
HOLDS UNTIL UNIT IS| ._--I ISTHERE I YESI ISVOLTAGE I NO I LED #2 -- SLOW FLASH
PROPERLY GROUNDi_I PROPER GROUND? _ ABOVE 75 VOLTS? I_-----I'
-- ' YES/ II _I LED#1ANDLED#2ALTERNATINGFASTI
• NO I'--ml FLASH. SIGNAL HOLDS UNTIL VOLTAGE I
_I ROLLOUT SWITCH CLOSED? _ I_ I RISES ABOVE 75 VOLTS. I
YESi in,--
| I1"I"1 GAS VALVE OFF. COMBUSTION AIR INDUCER OFF.
'_ _1 INDOOR BLOWER OFF WITH DELAY.
GAS VALVE I I LED #1 -- ON. LED #2 -- SLOW FLASH,
I DE-ENERGIZED? I ISEQUENCE HOLDS UNTIL ROLLOUT SWITCH CLOSES.
I
i
YEs_
NORMAL OPERATION: I
LED #1 -- SLOW FLASH
LED #2 -- SLOW FLASH
THERMOSTAT CALLS FOR HEAT: I
LED #1 -- FAST FLASH
ILED #2 -- FAST FLASH
YES
NO
IS COMBUSTION AIR I
PRESSURE SWITCH OPEN? 14
YES _1
I IS COMBUSTION AIR INDUCER ENERGIZED?
(HUM TERMINAL IS ENERGIZED WITH C.A.I.) 4
1_
HAS COMBUSTION AIR PRESSURESWITCH CLOSED IN 2.5 MINUTES?
YES
15-SECOND COMBUSTION AIR INDUCER PREPURGE I
| N T ATED BY CLOSED PRESSURE SW TCH. I
m
YES
CONTINUED NEXT PAGE
GAS VALVE OFF.
COMBUSTION AIR INDUCER OFF.
INDOOR BLOWER OFF WITH DELAY.
LED #1 OFF
LED #2 SLOW FLASH
(Sequence holds until pressure switch
closes or thermostat resets control,)
PRESSURE SWITCH IS IN WATCHGUARD MODE.
GAS VALVE OFF. COMBUSTION AIR INDUCER OFF.
INDOOR BLOWER OFF WITH DELAY,
LED #1 -- OFF. LED #2 -- SLOW FLASH,
IS 5-MINUTE RESET PERIOD COMPLETE?
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