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TROUBLESHOOTING GUIDE
Display is Flashing "E2"
Possible Causes
Airflow switch hose or stove attachment
pipes for hose are blocked.
The air inlet, burnpot, interior combustion air
chambers, combustion blower, or exhaust
pipe are blocked with ash or foreign material.
The firebox is not properly sealed.
Vent pipe is incorrectly installed.
The airflow switch wire connections are bad.
Combustion blower failure.
Control
board
not
combustion blower.
Control board not sending power to air
switch.
Air switch has failed.
sending
power
to
Possible Remedies: (Unplug stove first when possible)
Unhook air hose from the air switch and blow through it. If
air flows freely, the hose and tube are fine. If air will not flow
throw the hose, use a wire coat hanger to clear the blockage.
Follow all cleaning procedures in the maintenance section
of the owner's manual.
Make sure the door is closed and that the gasket is in good
shape.
Check to make sure vent pipe installation meets criteria in
owner's manual.
Check the connectors that attach the gray wires to the air
switch.
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, make sure the
control board is sending power to the air switch.
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.
There should be a 5-volt current (approximately) going to
the air switch after the stove has been on for 30 seconds.
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 first 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.
-19-
© 2021 United States Stove Company
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