Troubleshooting guide

Page 42
Combustion Fan
Exhaust Fan - Located near the back left hand side of the stove under the hopper and
mounted on top of the exhaust manifold. This multi-functional fan is used to draw either
inside, or in some cases outside, combustion air into the firebox area of the stove and then
expel the exhaust gases out through the exhaust manifold and into the atmosphere.
The Advance Heat button will run the Combustion Exhaust Fan at 5 variable speed
settings; there are a total of 5 Heat selections available. The first four selections increase
the fan speed proportionally; while the last selection runs at the maximum speed setting.
Air is drawn into the stove in 2 locations. The first is Combustion air, which travels
through the Air Inlet tube into the Burn Pot area; this is where oxygen and wood pellets
get mixed with heat to produce the combusted by-product, which gets sent out the
exhaust port. The second location is the Air Wash System; this is where air gets forced
down the inner surface of the ceramic glass to provide a clean glass surface for viewing
the flame.
As an electrical component, the troubleshooting of the combustion fan can be broken
down to a defective fan, a defective control board, or issues related to the wiring. If the
stove lights up and the Combustion fan never comes on the Vacuum switch would shut
the stove down after approximately 45 seconds. Follow these steps to troubleshoot the
convection fan:
 Check the wiring connections to the fan. The White wire from the fan
connects to a White wire in the Harness that connects to the Terminal
Block in the back of the stove and the Black wire from the fan is
connected to the Blue wire in the wiring harness. There is a 3
rd
wire
coming from the Combustion fan that is not used in the models with the
digital control board. This is a Brown wire and it is tied back in the
harness.
 If all connections are tight, check for Voltage at the Blue wire.
Attention: The control board sends line voltage to the Combustion blower for the
first 30 seconds after turning the stove on and then it drops to a lower voltage for
the start-up cycle. The voltage is approximately 90 volts.
 Hot Wire the fan, using a power cord with a ¼” Male and ¼” Female
spade connector at this time to see if the fan is defective. If the fan runs,
continue trouble shooting the fan circuit in the stove. Replace it if it
doesn’t.
 If there isn’t any voltage on the Blue wire and the Combustion fan runs
when Hot-wired, check to make sure the Blue wire is inserted properly
into the Molex connector that plugs into the control board. The wire may
appear to be inserted properly, but sometimes is not connected to the pin
on the control board. Push the Blue wire into the Molex connector to
ensure it is seated properly.