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VII − TROUBLESHOOTING FLOWCHARTS
IGNITION CONTROL CHECKOUT GC1
REPLACE
GC1 CONTROL
APPLY THERMOSTAT DEMAND
AND ALLOW UNIT TO IGNITE
AND ESTABLISH FLAME.
DOES THE CONTROL HALT OPERATION AND
LED LIGHTS IMMEDIATELY AFTER THE TRIAL
FOR IGNITION (WAIT 2 MINUTES TO MAKE SURE
UNIT IS OUT OF POST PURGE
NO YES
TURN OFF UNIT POWER AT DISCONNECT
FOR AT LEAST 3 SECONDS, THEN TURN
POWER BACK ON. ALLOW 3 SECONDS
FOR CONTROL TO POWER−UP.
IS RED DIAGNOSTIC
LED LIT?
UNIT WAS
IN LOCKOUT
LIT
YES
CONTROL SHOULD OPERATE
PROPERLY PROCEED TO UNIT
WILL NOT RUN"−GAS CHECKS
AND SPARK CHECKS TO RULE
OUT OTHER POSSIBILITIES.
NO
CONTROL SHOULD OPERATE
PROPERLY PROCEED TO
ELECTRICAL CHECKOUT.
NOT LIT
REPLACE GC1
CONTROL
START HERE
IS RED DIAGNOSTIC
LED LIT?