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11. TROUBLE SHOOTING
PROBLEM
CAUSES
SOLUTIONS
Heating inefficient during the first
combustions. Lack of draft.
Improper adjustment of the
barometric damper (opened too
wide). Chimney flue restriction (too
long., or too many 90
o
elbows)
Adjust the damper, minimize the
chimney length and use 45
o
elbows.
Furnace heats well, warm air plenum
is very hot by there is not much heat
coming out in the room.
Improper installation of the ducts,
little static pressure, unbalanced
system (too many warm air outlets
and not enough cold air inlets).
Reinstall the ducts correctly.
Respect the minimum static pressure
of 0.20 in. w.c.
Furnace consumes a lot of wood.
The thermostat which controls the
damper is continuously activated or
is too close to a source of cold air.
Damper not properly adjusted.
House not insulated enough. Ash
drawer is not tightly closed. Furnace
too small for the surface to be
heated. Unbalanced ventilation
system, very little heat where the
thermostat is located.
Relocate the thermostat. Adjust the
chain that links the damper to the
damper motor. Rebalance the
ventilation system in order to
increase the air flow in the room
where the thermostat is located.
Fan start-up is too slow.
Fan “ON” setting too high. Return air
is too cold (temperature lower than
65 degrees). Limit control not well
located in the warm air plenum.
Lower the temperature starting point.
The “fan ON” setting on limit control
is set at 150°F, it may reduced in
some particular installations. Reduce
the fresh air flow. Relocate the limit
control.
A lot of creosote, moderate heat
output.
Wet wood, lack of draft. Barometric
damper not properly adjusted. Dirty
chimney.
Use dry wood. Adjust the barometric
damper. Clean the chimney flue and
the furnace exchangers.
Furnace heats a lot but the warm air
plenum does not get hot.
Wet wood or low grade wood. Too
much cold air return for the hot air
ducts. Unbalanced ventilation
system. Blower speed too high
Use dry wood. Reinstall the
ventilation system correctly. Use a
lower blower speed.
IMPORTANT NOTE
FOR, INSTALLATION OF A CENTRAL HEATING VENTILATION SYSTEM, IT IS HIGHLY
RECOMMENDED TO CONSULT A HEATING SYSTEM VENTILATION SPECIALIST.
N.B.: UNITED STATES STOVE COMPANY IS NOT RESPONSIBLE FOR POOR APPLIANCE
PERFORMANCES, DUE TO AN IMPROPER INSTALLATION.
