UTICA BOILERS UB90-50 Installation Manual page 55

System Status
THE INDICATOR LIGHTS TRACk THE OPERATING SEqUENCE. IF THE SYSTEM LOCkS OUT, THE LIGHTS
INDICATE THE POINT IN THE SEqUENCE OF OPERATION WHERE LOCkOUT OCCURS. IF THIS TABLE
DOES NOT READILY PROVIDE THE REASON FOR BOILER MALFUNCTION OR NON-OPERATION, REFER
LIGHT STATUS
Power oFF
BliNkiNG
oFF
PUrGe
BliNkiNG
iGNiter
oFF
oFF
ValVe
BliNkiNG
FlaMe
oFF
oN IBC IS ENERGIzED THROUGH 24 VOLT TRANSFORMER.
IBC IS NOT ENERGIzED.
IBC RECEIVES MORE THAN 40 VAC
oN IBC IS ENERGIzING THE DRAFT INDUCER AND AIR FLOW IS PROVEN.
OFF DURING PURGE CYCLE-DRAFT INDUCER IS NOT POWERED OR AIR FLOW
IS NOT PROVEN.
OFF DURING IGNITER AND RUN CYCLE-NORMAL OPERATION, PURGE
CYCLE COMPLETE.
IBC IS LOCkED OUT. PROBLEM COULD INDICATE FALSE POSITIVE PROOF
OF AIR FLOW. BLOCkED VENT OR INTAkE AIR PIPE OR FLUE WAY.
oN IBC IS ENERGIzING IGNITER
IGNITER IS NOT ENERGIzED
oN IBC IS ENERGIzING GAS CONTROL VALVE TO OPEN.
GAS CONTROL VALVE IS CLOSED.
IBC IS LOCkED OUT. PROBLEM IS FLAME HAS NOT BEEN PROVEN IN
THREE (3) IGNITION ATTEMPTS. MAY BE DUE TO BROkEN IGNITER OR
LACk OF OR LOW FLAME SIGNAL, OR NO GAS.
oN FLAME PROVEN
FLAME UNPROVEN
TROUBLESHOOTING
INDICATES
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