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Disconnect the power cord before performing any maintenance! NOTE: Turning the ON/OFF Switch to "OFF"
does not disconnect all power to the electrical components of the furnace.
Never try to repair or replace any part of the furnace unless instructions for doing so are given in this manual.
All other work should be done by a trained technician.
PROBLEM
Orange, lazy flame, excessive fuel
build-up in the burnpot
PROBLEM
Fire goes out or furnace shuts down.
PROBLEM
Viewing window becoming black
shortly after start-up.
PROBLEM
"Black Popcorn" is present in the burn
chamber.
PROBLEM
"Clinkers" form in burnpot.
PROBLEM
Unit cycles up and down when on the
"HIGH" heat setting.
PROBLEM
Corn builds up and is not burning com-
pletely. Steam is coming from the corn.
20
Trouble Shooting
CAUSE: Too rich air/fuel mixture
• Clean out the burnpot and burnpot housing
• Adjust the air damper on the front of the furnace to an open position.
• Make sure that the viewing door is closed and sealed properly. If not,
check door gasket..
• Check that all outside connections are clear of any obstructions.
• Check the exhaust system; clean as needed.
CAUSE: Burnpot burns out of fuel
• Hopper is empty, refi ll the hopper.
• Loss of draft pressure. Make sure that the viewing door is closed and
sealed properly. Check that all outside connections are clear of any
obstructions. Check the exhaust system; clean as needed.
• Check that the pressure switch connection to the fi rebox is free of ash or
clear of obstructions.
• Auger system is jammed or there is a "bridging" of the fuel in the hopper,
preventing fuel from fl owing into the auger feed system.
• Stove may be shutting down due to an over temperature condition.
CAUSE: Not enough combustion air; Fuel has too much moisture.
• Adjust the air damper to a more open position.
• Use a fuel with less moisture content
CAUSE: Not enough combustion air; Fuel has too much moisture.
• Adjust the air damper to a more open position.
• Use a fuel with less moisture content
• Stove might be cycling excessively due to temperature cut backs.
• Reduce heat setting
CAUSE: Chemical reaction between the starch in corn and the heat.
• Add calcium carbonate (aka chicken scratch or oyster shell).
• Adjust air mixture
• Use corn with less moisture or starch.
CAUSE: Unit is reaching the "Almost Over-temp" preset.
• Adjust the heat range to lower setting.
• Fuel burns hot causing the furnace to cycle between high setting and
lower settings.
CAUSE: Corn is wet or it has a very high moisture content.
• Use corn with a moisture content of 11% or less for best results.
USSC
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