Troubleshooting - Heat Controller TGC Series Installation Instructions Manual

MAIN BURNER FLAME SUSTAINED
YES
INDOOR BLOWER MOTOR STARTS
AFTER 30 SECONDS
YES
SYSTEM RUNS UNTIL
CALL FOR HEAT ENDS
YES
TURN THERMOSTAT OFF
VALVE SHUTS OFF
FLAME SHUTS OFF
YES
INDUCED DRAFT MOTOR STOPS
AFTER 5 SECOND POSTPURGE
YES
INDOOR BLOWER MOTOR STOPS
AFTER 90 SECONDS
YES
TROUBLESHOOTING ENDS
REPEAT PROCEDURE UNTIL TROUBLE FREE
OPERATION IS OBTAINED.
NOTE: IF THE SYSTEM GOES INTO LOCKOUT, WAIT
30 SECONDS AND RESET THE SYSTEM.
NO
• CHECK FLAME SENSOR POSITION AND CONDITION
• CLEAN FLAME SENSOR WITH STEEL WOOL
• CHECK FLAME SENSOR WIRES AND CONNECTIONS
REPLACE IGNITION CON-
NO
• CHECK FOR 208-230 VAC ACROSS BLOWER
MOTOR TERMINALS ON CONTROL BOARD
• CHECK CAPACITOR
REPLACE BLOWER
NO
• CHECK FOR OPEN LIMIT
• CHECK FOR OPEN ROLL-OUT CONTROL
• CHECK FOR PROPER THERMOSTAT OPERATION
• REMOVE VALVE LEAD AT GAS VALVE
NO
IF VALVE CLOSES, RECHECK THE THERMOSTAT
AND WIRING. IF OK, THEN REPLACE VALVE
NO
NO
• CHECK FOR OPEN LIMIT OR ROLL-OUT CONTROL
• CHECK FOR EXHAUST OR INTAKE BLOCKAGE.
CLEAR BLOCKAGE AND RESET CONTROL
• CHECK FOR DIRTY FILTERS
• CHECK FOR RESTRICTED AIRFLOW
NO
TROL
YES
MOTOR
YES
YES
REPLACE SENSOR
NO
REPLACE INTEGRATED
CONTROL BOARD (IFC)
• CHECK FOR DIRTY FILTERS
• CHECK FOR RESTRICTED
AIR-FLOW
YES
YES
CHECK FOR EXHAUST,
INTAKE OR HEAT EXCHANG-
ER BLOCKAGE
CLEAR BLOCKAGE AND
RESET CONTROL
NO
REPLACE INTEGRATED
CONTROL BOARD (IFC)
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