Troubleshooting guide

Page 84
If nothing is found in the drop chute area, empty the hopper and visually
inspect the opening to the auger. If nothing is found, the auger will have to
be pulled from the hopper to see if the obstruction is farther up in the tube.
If the Auger Motor does not appear to be running or trying to run, it may
be a problem with the power to the motor. Check for
intermittent
Line
voltage on the
Yellow
wire plugged into the auger Motor. Voltage should
be cycling ON and OFF when the Auger light on the control board blinks.
Make sure the wires a fully pushed into the Molex connector that plugs
into the control board. They may look OK, but in fact may not be making
contact with the pins from the control board. Push the Yellow wire into the
Molex connector to ensure they are seated properly.
If there isn’t any voltage at the Auger,
carefully
check for voltage on the
pin-out on the control board. If no
Intermittent
voltage is present on the
control board, the control board is bad and needs to be replaced.
Second
let’s look at the High Limit Switch. This is a normally closed switch that
opens on rise at 250 F. Check if it’s tripped and shut the stove off. It must be
manually reset to allow the auger to run again. The following items would involve
a situation where the stove sensed temperatures above the normal range.
Attention: There is a difference in Diagnostic Lights between first Generation
Digital Control Boards and second Generation Control Boards. First generation
control boards do not have a separate Diagnostic light. If the High Limit trips the
auger shuts off and eventually when the stove shuts down the #3 LED starts to flash.
Second Generation Digital Control Boards have a Diagnostic code specifically for
the High Limit Switch. The #2 and #3 LED lights flash at the same time.
If the switch has been reset, and the stove starts up as it normally would, look for
a reason that would cause the stove to shut down.
Attention: The control board sends power to the Convection blower for the first 30
seconds after turning the stove on and then shuts it off. If in doubt, bypass the Proof
of Fire Switch and check for voltage coming from the control board.
a.
Inspect the Convection blower and see if it is running once the Proof of
Fire switch locks in. If the convection fan isn’t running, inspect the wiring
for a loose connection.
b.
Check to see if the fan is getting voltage from the control board. If voltage
is present, hot-wire the fan to double check the blower. If the blower still
doesn’t come on, replace the blower.
c.
If there isn’t any voltage at the fan,
carefully
check for voltage on the pin-
out on the control board. If no voltage is present on the control board, the
control board is bad and needs to be replaced. (
Voltage is line voltage for
30 seconds after the unit is turned on. The fan does not come back on until
the P.O.F. Switch is closed 5 minutes later and then the voltage is around
80 volts.)