Supplemental Manual

28
HE+ Series 1-Stage Supplemental Manual
MAIN BURNER LIGHTS
SYSTEM RUNS UNTIL CALL FOR HEAT
ENDS
CALL FOR HEAT ENDS: SYSTEM SHUTS
OFF
TROUBLESHOOTING ENDS
Also See DSI Info previous
pages.
• 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.
• CHECK ELECTRICAL WIRING, AND VOLTAGE BE-
TWEEN IGNITION CONTROL AND GAS VALVE.
• IF OK, REPLACE GAS VALVE.


• 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
GROUND AND MODULE FOR A MINIMUM 1.5UA.
• IF SIGNAL IS LOWER CHANGE IGNITER.
• IF CHECKS ARE OK.....REPLACE CONTROL.
• CHECK TEMPERATURE CONTROLLER.
• CHECK FOR FAULTY WIRING, REMOVE GAS
VALVE LEAD AT CONTROL ,
• IF VALVE CLOSES, RECHECK THE TEMPERATURE
CONTROLLER AND WIRING.
• IF VALVE STAYS OPEN....REPLACE GAS VALVE
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
GROUND AND MODULE FOR 0.7 UA MINIMUM.
• IF SIGNAL IS LOWER CHANGE IGNITER.
• IF CHECKS ARE OK.......REPLACE CONTROL.
NO
YES
NO
YES
YES
YES
NO
NO