Schwank STR Series Installation & Owner's Manual page 25

MAIN BURNER LIGHTS
YES
SPARK STOPS WHEN
BURNER LIGHTS
YES
SYSTEM RUNS UNTIL
CALL FOR HEAT ENDS
YES
CALL FOR HEAT ENDS:
SYSTEM SHUTS OFF
YES
TROUBLESHOOTING ENDS
•
CHECK FOR 25 VAC ACROSS VALVE AND
VALVE TERMINALS IN IGNITER AND CAP, IF
NO
NO VOLTAGE, REPLACE IGNITION CON-
TROL
•
SPARK IGNITER MAY BE OUT OF POSITION
CHECK ELECTRICAL CONNECTION BE
TWEEN IGNITION CONTROL AND GAS CON
TROL, IF OKAY, REPLACE GAS CONTROL
•
NOTE: IF IGNITION CONTROL GOES INTO
LOCKOUT, RESET SYSTEM
NO
•
CHECK CONTINUITY OF SENSOR CABLE
AND GROUND WIRE
•
CHECK THAT BURNER FLAME COVERS
ALL ELECTRODES
•
IF CHECKS ARE OKAY, REPLACE IGNITION
CONTROL
•
NO •
CHECK CONTINUITY OF SENSOR CABLE
AND GROUND WIRE
•
NOTE: IF GROUND IS POOR OR ERRATIC,
SHUTDOWNS MAY OCCUR OCCASIONALLY,
EVEN THOUGH OPERATION IS NORMAL AT
THE TIME OF CHECKOUT IF CHECKS ARE
OKAY, REPACE IGNITION CONTROL
•
CHECK FOR PROPER TEMPERATURE
NO
CONTROLLER OPERATIONS
•
REMOVE VALVE LEAD AT IGNITION
CONTROL, IF VALVE CLOSES, RECHECK
TEMPERATURE CONTROLLER AND WIR
ING, IF NOT, REPLACE GAS CONTROL.OR
Page 21
NOTE: IF IGNITION CONTROL GOES INTO
LOCKOUT, RESET SYSTEM
SP-MSTR-AC-11A
STR Manual
RD: NOV, 2003
RL: 11
KH