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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
POWER
OFF
Blinking
PURGE
OFF
Blinking
IGNITER
OFF
VALVE
OFF
Blinking
On Bright
FLAME
On Dim
OFF
15 - TROUBLESHOOTING
ON
ON
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.
IBC is locked out. Problem could indicate false positive proof of air fl ow. Blocked vent,
intake air pipe, fl ue way, or orifi ce in negative pressure hose.
ON
ON
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.
INDICATES
IBC is energized through 24 volt transformer.
IBC is not energized.
IBC receives more than 40 VAC.
IBC is energizing draft inducer and air fl ow is proven.
IBC is energizing igniter.
Igniter is not energized.
IBC is energizing gas control valve to open.
Gas control valve is closed.
Flame proven.
Checking for fl ame signal (during trial for ignition)
Flame unproven.
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