Owner's manual

35
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 ow is proven.
OFF
Off during purge cycle - draft inducer is not powered on or air 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 ow. Blocked vent,
intake air pipe, ue way, or ori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 ame has not been proven in three (3) ignition attempts.
May be due to broken igniter or lack of/low ame signal, or no gas.
FLAME
On Bright Flame proven.
On Dim Checking for ame signal (during trial for ignition)
OFF Flame unproven.
13 - SEQUENCE OF OPERATION DIAGNOSTICS