33
XVI. TROUBLESHOOTING
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 on 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,
intake air pipe, flue way, or orifice 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 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
On Bright Flame proven.
On Dim
Checking for flame signal (during trial for ignition)
Off
Flame unproven.
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.
!
!
WARNING
ELECTRICAL SHOCK HAZARD MAY CAUSE SERIOUS INJURY OR DEATH.
The following procedures may expose you to dangerous line voltage. Use caution to avoid touching
live electrical contacts. Service must be performed by a trained, experienced service technician.
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electric switch or use any phone in the building.
• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s
instructions.
• If you can not contact your gas supplier, call the fire department.
Should overheating occur or the gas supply fail to shut off, do not turn off or disconnect the elec-
trical supply to the pump. Instead, shut off the gas at a location external to the applicance.
Do not use the boiler if any part of the gas control system has been under water. A qualified
service technician should inspect the boiler and replace any part of the control system and any
gas control which has been under water.
Use only your hand to turn the gas control knob. Never use tools. If the knob will not turn by hand,
don’t try to repair it. Force or attempted repair may result in a fire or explosion.