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SST Extreme X & SST Extreme S MODULATING I&O Manual
RD: JAN 2022
RL: 1A
MAIN BURNER LIGHTS
SYSTEM RUNS UNTIL CALL FOR HEAT
CALL FOR HEAT ENDS:
TROUBLESHOOTING ENDS
Also See DSI Info previous
•
CHECK FOR STRONG SPARK AT IGNITER........
•
(SEE PREVIOUS PAGE).
•
CHECK FOR 24 VAC ACROSS GAS VALVE.
•
CHECK OUTPUT VOLTAGE FROM CONTROL TER-
MINALS TO GAS VALVE.....IF NO VOLTAGE RE-
PLACE CONTROL.
NOTE: IF IGNITION CONTROLS GOES INTO A
LOCKOUT, INTERRUPT POWER AND RESTART.
•
CHECK CONTINUITY OF SENSOR CABLE AND
GROUND WIRE AS A POOR GROUND COULD RE-
SULT IN ERRATIC BEHAVIOUR AND NUISANCE
SHUTDOWNS EVEN THOUGH OPERATION IS NOR-
MAL AT THE TIME OF CHECKOUT.
•
CHECK FOR EXCESSIVE HEAT AT SENSOR INSU-
LATOR AS TEMPERATURES ABOVE 1000°F(538°C)
CAUSES SHORT TO GROUND.
•
CHECK FLAME SIGNAL IN SERIES WITH THE
•
CHECK TEMPERATURE CONTROLLER.
•
CHECK FOR FAULTY WIRING, REMOVE GAS
VALVE LEAD AT CONTROL ,
•
IF VALVE CLOSES, RECHECK THE TEMPERATURE
SPARK STOPS WHEN BURNER LIGHTS
CONTROL IS NOT SENSING FLAME WITHIN THE
15 SECOND TFI AND IS STILL TRYING TO LIGHT
•
CHECK CONTINUITY OF SENSOR CABLE AND
GROUND WIRE
•
CHECK BURNER FLAME IS COVERING SENSOR.
•
CHECK FLAME SIGNAL IN SERIES WITH THE
NO
YES
NO
YES
YES
YES
NO
NO
