Schwank IT(U) - Manual (Page 29)

GP-MSEM-BX-06A
SEM(U) / IT(U) Manual
RD: Aug 2006
RL: 06A
KH
SPARK STOPS WHEN
BURNER LIGHTS
SYSTEM RUNS UNTIL CALL
FOR HEAT ENDS
CALL FOR HEAT ENDS:
SYSTEM SHUTS OFF
YES
YES
YES
YES NO
NO
NO
NO
SPARK IGNITER MAY BE OUT OF POSITION
CHECK ELECTRICAL CONNECTION FROM IGNI
TION CONTROL PIN #2 TO GAS VALVE.
CHECK FOR 110 VAC ACROSS GAS VALVE IF
OKAY, REPLACE GAS VALVE.
CHECK GROUND WIRE, IGNITER AND HT CABLE.
CHECK THAT BURNER FLAME COVERS ELECTRODE
IF CHECKS ARE OKAY, REPLACE IGNITION CONTROL
NOTE: IF IGNITION CONTROL GOES INTO LOCKOUT, MODE
RESET THE SYSTEM.
NOTE: IF GROUND IS POOR OR ERRATIC, SHUTDOWNS
MAY OCCUR OCCASIONALLY EVEN THOUGH OPERA-
TION IS NORMAL AT THE TIME OF CHECKOUT.
CHECK GROUND WIRE NECTIONS AND CONTINUITY.
IF CHECKS ARE OKAY, REPLACE IGNITION CONTROL
CHECK FOR PROPER TEMPERATURE CONTROLLER
OPERATIONS
REMOVE VALVE LEAD AT IGNITION CONTROL, IF VALVE
CLOSES, RECHECK TEMPERATURE CONTROLLER AND
WIRING, IF NOT, REPLACE GAS CONTROL OPERATOR
TROUBLESHOOTING ENDS
CONTINUED FROM PREVIOUS PAGE
MAIN BURNER LIGHTS
Page 25