34
System Status
Indicator lights track operating sequence. If system locks out, lights indicate point in sequence of operation were lockout
occurs. Refer to following pages for detailed troubleshooting procedures.
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 draft inducer and air
fl
ow is proven.
OFF
Off during purge cycle - draft inducer is not powered on or air
fl
ow 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
fl
ow. Blocked vent,
intake air pipe,
fl
ue way, or ori
fi
ce in negative pressure hose.
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
fl
ame has not been proven in three (3) ignition attempts.
May be due to broken igniter or lack of/low
fl
ame signal, or no gas.
FLAME
On Bright
Flame proven.
On Dim
Checking for
fl
ame signal (during trial for ignition)
OFF
Flame unproven.
15 - TROUBLESHOOTING