Shelter Furnace SF1000, Instruction Manual

Page: 22 / 28

Problem: Draft blower will not run. NOTE: Verify that the wall thermostat is in the
“HEAT” position, and make sure batteries are installed.
• Defective rocker switch on control
center.
• Replace rocker switch.
Possible Causes:
Remedies:
• Defective wall thermostat. • This can be checked by turning the thermostat to a temperature
setting that is higher than the temperature in your home. If the draft
blower does not operate, the thermostat may be defective. Replace
if necessary.
• Move switch on wall thermostat to the “HEAT” position.
• Replace relay.
• Replace draft motor.
• Wall thermostat is in the wrong
position.
• Defective relay in transformer.
• Defective draft motor.
4.
Problem: Excessive dirt accumulation surrounding air registers in the home.
Possible Causes:
Remedies:
• Furnace is not connected to
return air duct and is drawing
dirt from furnace room floor and
disbursing it throughout home.
• Connect to return air duct system.
• Install filter box on furnace. Install filter in filter box.
• Filter box not installed, or no filter
in filter box.
5.
Problem: Smoke from the fire chamber is puffing back through the forced draft motor.
• Furnace is not connected to
return air and is drawing smoke
fumes from the flue.
• Connect to return air duct system. Or room may be too airtight, refer
to “Location and Installation” section on page 3.
Possible Causes:
Remedies:
• Excessively long run of stove
pipe from furnace to flue.
• Relocate the furnace so the horizontal run does not exceed 5 feet
and has a 2 inch rise per foot.
• The run should not contain more than 2 elbows.
• Replace with a larger flue providing a minimum of 50 square
inches but not more than 100 square inches of draft area. If the
flue is within these specifications, check the draft with a draft gage
(manometer). Your flue should provide a minimum of .04 water
column inches and a maximum of .08 water column inches.
• Too many elbows.
• Insufficient flue size.
6.
• Review wiring diagram. If unit is wired correctly, seek professional
assistance.
• Improper wiring.
19