Dunkirk 90-50 Installation, Operation & Maintenance Manual page 48

system status
The indicator lights track the operating sequence. If the system locks out, the lights indicate the
LIGHT STATUS
ON
POwER OFF
BLINKING
ON
OFF
PURGE
BLINKING
ON
IGNITER
OFF
ON
OFF
VALVE
BLINKING
ON
FLAME
OFF
TroublesHooTing
point in the sequence of operation where lockout occurs.
IBC IS ENERGIzED THROUGH 24 VOLT TRANSFORMER.
IBC IS NOT ENERGIzED.
IBC RECEIVES MORE THAN 40 VAC
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.
IBC IS ENERGIzING IGNITER
IGNITER IS NOT ENERGIzED
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.
FLAME PROVEN
FLAME UNPROVEN
INDICATES
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