United States Stove 5520 사용자 설명서

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When your stove acts out of the ordinary, the fi rst reaction is to call for help. This guide may save time and money by 
enabling you to solve simple problems yourself. Problems encountered are often the result of only fi ve factors: 1) poor 
fuel; 2) poor operation or maintenance; 3) poor installation; 4) component failure; 5) factory defect. You can usually solve 
those problems related to 1 and 2. Your dealer can solve problems relating to 3, 4 and 5. Refer to the diagrams to help 
locate indicated parts.
For the sake of troubleshooting and using this guide to assist you, you should look at your heat level setting to see which 
light is fl ashing.

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 stove.

Never try to repair or replace any part of the stove unless instructions for doing so are given in this manual.  
All other work should be done by a trained technician.
Trouble Shooting Guide
STOVE SHUTS OFF AND THE #2 LIGHT FLASHES
Possible Causes:
Possible Remedies: (Unplug stove fi rst when possible)
1. Airfl ow switch hose or stove attachment pipes for hose are blocked. Unhook air hose from the air switch and blow through it.  If air fl ows 
freely, the hose and tube are fi ne.  If air will not fl ow throw the hose, 
use a wire coat hanger to clear the blockage.
2. 
The air inlet, burnpot, interior combustion air chambers, combustion 
blower, or exhaust pipe are blocked with ash or foreign material.
Follow all cleaning procedures in the maintenance section of the owner’s 
manual.
3. The 
fi rebox is not properly sealed.
Make sure the door is closed and that the gasket is in good shape.  If the 
ash door has a latch, make sure the ash door is properly latched and the 
gasket is sealing good.  If the stove has just a small hole for the ashes 
to fall through under the burnpot, make sure the slider plate is in place 
to seal off the fi rebox fl oor.
4. 
Vent pipe is incorrectly installed.
Check to make sure vent pipe installation meets criteria in owner’s manual.
5. The 
airfl ow switch wire connections are bad.
Check the connectors that attach the gray wires to the air switch.
6. 
The gray wires are pulled loose at the Molex connector on the wiring 
harness.
Check to see if the gray wires are loose at the Molex connector.
7. 
Combustion blower failure.
With the stove on, check to see if the combustion blower is running.  If it 
is not, you will need to check for power going to the combustion blower.  
It should be a full current.  If there is power, the blower is bad.  If there 
is not, see #8.
8. 
Control board not sending power to combustion blower.
If there is no current going to the combustion blower, check all wire 
connections.  If all wires are properly connected, you have a bad control 
board.
9. 
Control board not sending power to air switch.
There should be a 5-volt current (approximately) going to the air switch 
after the stove has been on for 30 seconds.
10. Air switch has failed (very rare).
To test the air switch, you will need to disconnect the air hose from 
the body of the stove.  With the other end still attached to the air 
switch, very gently suck on the loose end of the hose (you may 
want to remove the hose entirely off the stove and the air switch 
fi rst and make sure it is clear).  If you hear a click, the air switch 
is working.  BE CAREFUL TOO MUCH VACUUM CAN DAMAGE 
THE AIR SWITCH.