Troubleshooting guide

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 If the wires are plugged in, check the opposite ends that are plugged into
the control board. 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 the pins from the control board. Push the Gray
wires into the Molex connector to ensure they are seated properly.
 Check the Gray wires for continuity if needed with an OHM meter.
• If all wires and connections are correct, check the vacuum switch.
 Unplug the 2 Gray wires and jump them together. Run the stove and see if
that corrected the problem.
 If the stoves runs, check the vacuum reading in the stove using a
manometer connected to the vacuum hose. Be sure to leave the 2 Gray
wires jumped together or the stove will shut down again. The Set point for
the Vacuum Switch is .05” WC negative pressure. The stove typically has
a reading between .1” and .25” WC negative pressure. Reading gets lower
as the units heats up.
 If the vacuum reading is relatively low, check the intake air damper to see
if it is wide open. Adjusting the damper to a position that is more closed
will increase the Vacuum reading.
If dealing with an intermittent Vacuum problem do not overlook the possibly that a
combustion fan that is getting too hot and the Thermal Protection is shutting the fan
down. If you suspect the Thermal Protection is shutting the fan down, check the
combustion fan immediately after the stove shuts down. Once the fan cools down it may
start running again.
2. Heat
The number 3 LED light on the Heat Advance bar will flash if a “Minimum Heat
Related” event occurs. If the Proof of Fire switch senses that the Exhaust Temperatures
drop below 100 Degrees F, will shut the stove down and the number 3 LED light will
flash after the stove cools down and the fans shut off. This may take approximately 30
minutes, depending on how hot the stove is when the “Proof of Fire Switch” opens.
This may be caused by:
a. Operator error
b. Component Failure.
Which component may be the cause?
 High Limit Switch
 Proof of Fire Switch
 Control Board
 Wiring Harness
 Wiring Connections