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March 2011
Flex Fuel Owner’s Manual
17: Troubleshooting
Problem
Cause/Solution
Heating system is
not working
Furnace is producing
excessive smoke
Check power connection
Furnace emergency switch is deactivated
Refer to section 23
Activate furnace
Furnace is in part load mode. Do not add more wood until there is sufficient
demand for a full burn.
Furnace is loaded with green wood. Check the moisture content of the wood
that is being used. It must be under 25%.
Furnace is not producing
the desired BTU output.
Different types of wood contain different amounts of stored energy. Higher
quality woods such as oak will yield a higher output. If the furnace is being
operated on pellets, different grades and brands of pellets will produce
more/less heat. Please contact your WoodMaster Flex fuel Dealer for different
pellet options.
Bulk materials cavitate
in the firebox
The fuel may be binding on the sides of the firebox. Check that the fuel
used is within the recommended length and is not contacting the walls with
the cut ends.
The furnace has operated in Part Load for an extended period of time. This
can cause the fuel to burn unevenly and can cause pockets to form. Only
fill and fire the furnace when a full burn can occur.
The furnace does not
completely burn all the
fuel in Bulk Materials Mode
The size of bulk material pieces is to large. Medium sized seasoned wood
burns the most complete. Reduce the size of the pieces if necessary.
Round, unsplit wood may also not burn completely. Used only split wood for
future burns.
Note: Most problems can be resolved by following the on screen instructions. If you encounter a prob-
lem that is not resolved on screen or by the owners manual, please contact your
WoodMaster Flex fuel dealer.