Troubleshooting guide
Page 33
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.
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 Proof of Fire switch. This is a Normally Open switch
that closes on rise at 110 F. The following items would involve a situation where
the stove sensed temperatures in the exhaust system below the normal Operation
range.
Remove the P.O.F switch from the fan and heat up the contact surface of
the switch with a lighter until you hear a click (approximately 5 seconds).
Test the switch with an Ohm meter for continuity. The switch should be
closed. If it takes significantly longer than 5 seconds or if it doesn’t click
at all and never closes or if the switch is constantly closed and never
opens, replace the switch
If the switch is not defective, unplug the 2 Brown wires from the switch
and jump them together. Turn the stove on and wait 5 minutes. After five
minutes you should see 2 things:
1. The room fan comes on.
2. The ON/OFF light will quit blinking and be ON constantly.
If the 2 items listed above do not occur and the ON/OFF light keeps
blinking, check to make sure the Brown wires are inserted properly into
the Molex connector that plugs into the control board. They may appear to
be inserted properly, but sometimes are not connected to the pins on the
control board.
If they are inserted properly, use an OHM meter and check both Brown
wires for continuity.
As a last resort the control board should be replaced. If this problem is
intermittent, it most likely is not the control board.
Remember: Once the stove is turned on, both fans come on for 30 seconds, then the
room fan shuts off and goes into a Start-up Cycle, the auger will run for 2 minutes
and the igniter will light the stove. If the control board does not sense the P.O.F.
switch in the first 15 minutes the #3 LED light will start blinking (First Generation
Boards only, Second Generation Boards flash the #2 and #3 light at the same time).
This takes approximately 20 minutes
• Third - 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.