Bryan Furnace 450, Owner'S Manual

Page: 9 / 23

9
TROUBLE SHOOTING
Problem Possible Cause Solution
Fire will not stay lit Combustion air fan not 1. Make sure there is power to the fan.
operating. 2. Make sure that the combustion air
slot inside the rear of the fire box is
not obstructed.
Damp or green wood. It is advisable to use seasoned wood to
build a fire. Later, when a bed of
coals is well established, green wood
may burn satisfactory if mixed with
seasoned wood.
Insufficient draft. Check flue for obstructions. Flue may
have to be lengthened.
Building not warm Unit too small for build- Add another unit or have regular unit
enough. ing. Check specifications. help heat the building. If furnace is
producing 200 degree air at outlet, it is
performing at or above its rated cap-
acity.
Insufficient insulation in
building-heat is escaping. Re-insulate.
Improper installation. Review installation instructions.
Check for hot air leaks in ductwork.
Excessive creosote or Use of green or wet
Use seasoned dry wood or burn smaller
soot build-up in stack. wood. charges hotter.
Burning softwoods with Avoid using if possible. If you must
high resin content. burn them, burn small charges hotter.
Poor draft. See above.
Smoke or fumes from Normal for new furnace. Disconnect supply duct until it clears.
vent.
Smoke entering through Lengthen stack so that smoke does
combustion air fan. not settle on furnace.
Leaking seal around Torn or loose gasket. Reseal or replace gaskets.
door. Worn or compressed
gaskets. Reverse latch for tighter fit.
Fans cut off.
Normal if temperature in
furnace drops below 90 de-
gree F.
Turn switch on bottom of fan to “on” if
you desire fan to run below t–stat range.
Fan runs continu-
ously without heat. Switch on bottom of fan
box is in “on” position.
Stuck thermostat or relay.
Move switch to “auto” position.
Replace defective parts. 9