United States Stove 6300C manual 20

Trouble Shooting

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	CAUSE: Too rich air/fuel mixture
Orange, lazy flame_excessive fuel	•	Clean out the burnpot and burnpot housing
build-up in the burnpot	•	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.
PROBLEM	CAUSE: Burnpot burns out of fuel
Fire goes out or furnace shuts down.	•	Hopper is empty, refill 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 firebox 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 flowing into the auger feed system.
	•	Stove may be shutting down to an over temperture condition.
PROBLEM	CAUSE: Not enough combustion air; Fuel has too much moisture.
Viewing window becoming black shortly	•	Adjust the air damper to a more open position.
after start-up.	•	Use a fuel with less moisture content
PROBLEM	CAUSE: Not enough combustion air; Fuel has too much moisture.
“Black Popcorn” is present in the burn	•	Adjust the air damper to a more open position.
chamber.	•	Use a fuel with less moisture content
	•	Stove might be cycling excessively due to temperature cut backs.
	•	Reduce heat setting
PROBLEM	CAUSE: Chemical reaction between the starch in corn and the heat.
“Clinkers” form in burnpot.	•	Add calcium carbonate (aka chicken scratch or oyster shell).
	•	Adjust air mixture
	•	Use corn with less moisture or starch.
PROBLEM	CAUSE: Unit is reaching the “Almost Over-temp” preset.
Unit cycles up and down when on the	•	Adjust the heat range to lower setting.
“HIGH” heat setting.	•	Fuel burns hot causing the furnace to cycle between high setting and
	lower settings.
PROBLEM	CAUSE: Corn is wet or it has a very high moisture content.
Corn builds up and is not burning com-	•	Use corn with a moisture content of 11% or less for best results.
pletely. Steam is coming from the corn.

20 USSC