LAARS IGE-199C-5(N,X) - Service Manual - Manual (Page 23)

23
VI - TROUBLESHOOTING
ERROR MESSAGES
Error Faulty Remedy
10 Air Supply or Exhaust Blockage Check intake and exhaust ports for obstructions.
Check that nothing is blocking the flue inlet or exhaust.
Did you maintain the proper clearance from combustibles
around the unit?
11 No Ignition Ensure you have gas to the appliance.
Ensure gas type and pressure is correct.
Bleed all air from gas lines.
Verify dip switches are set properly.
Disconnect all MSA controls.
Ensure gas line, meter, and/or regulator is sized properly.
Ensure appliance is properly grounded.
Check gas solenoid valves for open or short circuits.
Ensure igniter is operational.
Check igniter wiring harness for damage.
12 Flame Failure Ensure you have gas to the appliance.
Ensure gas type and pressure is correct.
Bleed all air from gas lines.
Verify dip switches are set properly.
Ensure flame rod wire is connected.
Check flame rod for carbon build-up.
Ensure gas line, meter, and/or regulator is sized properly.
Ensure appliance is properly grounded.
Check gas solenoid valves for open or short circuits.
Check power supply for loose connections.
Check power supply for proper voltage and voltage drops.
Disconnect all MSA controls.
Disconnect keypad.
Disconnect and re-connect all wiring harnesses on unit and PC
board.
Immediate code 12 usually indicates a defective gas valve
or power supply problem.
14 Thermo Fuse Ensure dip switches are set to the proper position.
Ensure high fire and low fire manifold pressure is correct.
Check gas type of unit and ensure it matches gas type
being used.
Check heat exchanger for cracks and/or separations.
Check resistance on safety circuit.
Check for improper conversion of product.
Check for restrictions in air flow around unit and vent
exhaust discharge.
Check for a low flow circulating system that is causing the
unit to short cycle.
Check for a foreign materials in combustion chamber
and/or exhaust piping.
16 Over Temperature Warning Check for clogged heat exchanger.
Check for restrictions in air flow around unit and vent terminal.
Check for a low flow circulating system that is causing the unit
to short cycle.
Check for foreign materials in combustion chamber and/or
exhaust.