3. An impurity in the pellets has hung up the auger.
Remedy: The cup is turning but the auger is not. Loosen the coupling on the auger and try
to turn free. Do not force it. You may have to remove the auger to clear.
4. Fines and dust are accumulating in the burner compartment area.
Remedy: Check the seal between the hopper and the burner flanges as well as the hopper
seam seals. Reseal.
5. The heat exchanger is full of ash.
Remedy: Shut the furnace off, let cool, remove all heat exchanger cover plates and vacuum
out. Check vent system while you are at it.
6. The main fire door has been left ajar.
Remedy: Close the door completely and make sure it is secure.
7. Cup motor is defective.
Remedy: Unhook motor from drive coupling, give motor power and check for operation.
Replace motor if defective.
8. Auger motor is defective.
Remedy: Unhook motor from drive coupling, give motor power and check for operation.
Replace motor if defective.
9. Fan limit control is defective.
Remedy: Replace with new control.
10. Safety disc defective.
Remedy: The safety disc is normally open and closes on temperature rise. It must be up to
temperature and lock in to allow the burner to run. If you are sure that it is not reacting to
temperature, then you can test its defectiveness by bypassing from one terminal to
another. If burner activates after bypassing, then replace safety disc.
11. Safety disc is set wrong.
Remedy: Reset the safety disc according to manufacturers recommended settings.
12. Fan limit control settings are off.
Remedy: The first peg is the fan off setting (at which temperature the blower will turn off),
the second peg is the fan on setting (at which temperature the blower will turn on), the
third peg is the limit setting (high temperature shut down). All reading left to right. Check
the settings as per the manufacturers recommended settings.
13. Primary control is defective.
Remedy: Verify that this control is defective by tracing power during switching. Don't
guess! If defective replace.
14. Primary control setting wrong.
Remedy: Check setting according to manufacturer's recommended settings. Remember
that On time is amount of time burner will run during pilot burn, and Cycle time is the total
cycle both on and off. To find the off time, subtract the on time from the cycle time. Reset
and adjust draft setting accordingly.
15. Ash build up behind safety disc.
Remedy: Ash has accumulated behind the safety disc, thereby acting as an insulator on the
safety disc sensing area. Clean the heat exchanger, particularly behind the safety disc.
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