Lennox GWB9, Installation Instructions Manual

Page: 55 / 72

55
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 INDICATES
PoweR
on IBC IS ENERGIzED THROUGH 24 VOLT TRANSFORMER.
off IBC IS NOT ENERGIzED.
BlinkinG IBC RECEIVES MORE THAN 40 VAC
PuRGe
on
IBC IS ENERGIzING THE DRAFT INDUCER AND AIR FLOW IS PROVEN.
off
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.
BlinkinG
IBC IS LOCkED OUT. PROBLEM COULD INDICATE FALSE POSITIVE PROOF
OF AIR FLOW. BLOCkED VENT OR INTAkE AIR PIPE OR FLUE WAy.
iGniteR
on IBC IS ENERGIzING IGNITER
off IGNITER IS NOT ENERGIzED
ValVe
on IBC IS ENERGIzING GAS CONTROL VALVE TO OPEN.
off GAS CONTROL VALVE IS CLOSED.
BlinkinG
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
on FLAME PROVEN
off FLAME UNPROVEN
TROUBLESHOOTING
System Status