Kenmore K90-150 Owner's Manual page 32

SYSTEM STATUS
The indicator lights track the operating sequence. If the system locks out, the lights indicate the point in
the sequence of operation were lockout occurs. If this table does not readily provide the reason for boiler
malfunction or non-operation, refer to the following pages for more detailed troubleshooting procedures.
POWER
On
Off
Blinking
On
Off
PURGE
Blinking
On
IGNITER
Off
On
Off
VALVE
Blinking
On Bright
FLAME On Dim
Off
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 on 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,
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/low flame signal, or no gas.
Flame proven.
Checking for flame signal (during trial for ignition)
Flame unproven.
WARNING