United States Stove Company 4840 - Manual (Page 13)

Ussc 13
 Disconnect the power cord before performing any maintenance! NOTE: Switching the appliance to ”OFF” does not disconnect
all power to the electrical components of the heater.
 Never try to repair or replace any part of the heater unless instructions for doing so are given in this manual or supplied from the
factory. All other work should be done by a trained technician.
TROUBLE SHOOTING ERRORS
PROBLEM CAUSE: To rich air/fuel mixture
Orange, lazy fl ame, excessive
fuel build-up in the burn pot • Clean out the burn pot and behind the cleanout door.
• Make sure that the combustion door is closed and sealed properly.
If not, adjust door catch and/or replace door gaskets.
• Check that the exhaust is clear of any obstructions. Clean as needed
• Check for proper seating of the burn pot.
PROBLEM CAUSE: Burn pot burns out of fuel
Fire goes out or heater shuts down. • Hopper is empty, refi ll the hopper.
• Loss of draft pressure. Make sure that the combustion door is closed and
sealed properly. If not, adjust door catch and/or replace door gaskets.
Check that the exhaust is clear of any obstructions. Clean as needed.
• Make sure the viewing door and hopper lid is closed completely.
• 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.
PROBLEM CAUSE: Auto-Start Igniter fails to ignite the fuel in the burn pot.
Heater does not start a fi re when
the “ON” button is pushed • Turn the heater “OFF”. Clear the unburnt fuel from the burn pot and try again.
• Check the pellet quality. Replace if moist, wet, or dirty.
• Loss of draft pressure. Make sure that the combustion door is closed and
sealed properly. If not, adjust door catch and/or replace door gaskets.
Check that the exhaust is clear of any obstructions. Clean as needed.
• Check that the auto-start igniter is not blocked with ash or soot. (The igniter
is located behind the burn pot on the back wall of the combustion chamber.)
• The auto-start igniter gets “red hot” during start-up. If you can not visibly
see the igniter glowing during start-up, then the igniter may need to be
replaced or there is a problem with the electrical control system.
• Check for proper alignment between the burn pot and the igniter tube.
PROBLEM CAUSE: Heater has reached the 2nd over temperature limit.
Heater enters shut-down mode • To much fuel in the burn pot. Restart heater after heater has cooled.
• RTD sensor in the room discharge air may be faulty causing
the room fan not to come on. Contact your dealer.