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List of Problems Possible Cause Solutions
1. Smoking when feed door is open.
2. Furnace does not heat.
3. Blower does not run.
4. No air from registers - fan running.
5. Air from registers is not hot.
6. Blower runs too long.
7. Blower does not run long enough.
8. Smoke and/or odor from registers
when furnace is used for first time.
9. Creosote build-up.
10. Flame spillage when feed door is
open.
a) Insufficient draft.
b) Clogged chimney or chimney
connector.
c) Down draft in chimney.
a) Wood not seasoned and dry.
b) Blower control set too low.
c) Insufficient flue draft.
a) Improperly wired.
b) Bad blower control.
c) Bad relay.
d) Bad blower motor.
a) Registers are closed.
b) Duct work improperly installed.
c) Improper wiring between central
furnace and Model 1537.
a) Blower control set too low.
b) Bad blower control.
Blower control cut off set too low.
a) Blower control cut off set too high.
b) Bad blower motor.
Oil from furnace and duct work.
a) Burning green wood (not seasoned
or dry).
b) Thermostat setting too low for type
fuel.
a) Insufficient draft.
b) Smothering fire when adding fresh
fuel.
a) Set thermostat higher.
b) Clean chimney.
c) Add raincap to chimney.
a) Allow wood to season in a dry, well
ventilated area for six months.
b) Set blower control to higher
temperature (See Page 18).
c) Set flue draft (See Page 9).
a) Wire unit properly.
b) Replace blower control.
c) Replace relay.
d) Replace blower.
a) Open registers.
b) Correct duct work installations.
c) Wire unit properly.
a) Adjust blower control to higher
setting (See Page 18).
b) Replace blower control.
Set blower control cut off to higher
setting (See Page 18)
a) Set blower control cut off to lower
setting (See Page 18).
b) Replace blower.
The metal used in construction of the
furnace and duct work has a light
coating of oil. This should disappear
after a short period of time. Once this
burn-off has occurred, it should not
reoccur.
a) Burn only seasoned wood.
b) Set thermostat higher to attain
higher flue temperatures. This will aid
in preventing build-up of creosote.
a) Set thermostat higher.
b) Add fuel so as not to smother fire.
Trouble Shooting Tips
for Warm Air Furnace
30