Pellet Utility Furnace Troubleshooting Guide

25-PUF, 55-SHP240 or 55-TRP240


WARNING: To avoid electrical shock, always disconnect the unit before attempting any trouble shooting procedures (unless otherwise indicated in this manual). If the solution in this guide does not correct the problem, consult your local dealer or call the factory.

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation and Verify  proper operation after servicing.

Unit must be OFF, unplugged and cool before any maintenance



Problem Cause Solution
1. Auger not turning 1. Bad gear motor
2. Foreign matter in auger
3. Vacuum sensor
1. Replace auger motor
2. Remove pellets and object
3. Check exhaust blower
2. Smoke smell or dust in house    Improper exhaust
   Check all connections for leaks
     especially the exhaust blower
     connection; Seal with silicone,
     hose clamp or aluminum tape
3. Room air blower not operating 1. Loose sensor
2. High "ON" temperature
3. Blower Speed to High for
    Heat Range causing blower
    to cycle
1. Tighten connection on sensor
2. Adjust temperature lower
3. Lower Blower Speed
4. Exhaust blower not operating 1. Loose connection
2. Bad blower
3. Bad vacuum sensor
1. Check connection at c/board
2. Replace blower
3. Replace vacuum sensor
5. Lazy fire 1. Control board settings
2. Bad exhaust blower
3. Excessive pellet  moisture
4. Excessive ash
5. Low quality pellets
1. Review board settings
2. Replace blower
3. Keep pellets inside
4. Remove baffles; Clean unit
5. Use premium pellets
6. Blown fuse (6 AMP) 1. Power surge

2. Exposed wire

3. Electric motor shorting
    or bound up

1. Replace fuse; use surge protector

2. Check for exposed or frayed
    wire and loose connections

3. Check motors and blowers
    bound up for obstructions or

7. High pellet consumption 1. Low quality pellets
2. Board out of adjustment
1. Use premium pellets
2. Check control board settings
8. Squeaking noise 1. Build-up in tube
2. Improper auger alignment
3. Blower noise
1. Remove auger and clean
2. Re-align auger
3. Remove and oil blower
9. Pinging or rattling noise 1. Foreign material
2. Loose set screw
1. Check blower for material
2. Check impeller blower screw
10. Unit shuts down in
       20 to 30 minutes
      (E-2 code on control board)
1. Loose Heat Sensor
2. Control Board Settings

3. Failure to start (E-2)

1. Check stove connection.
2. Check settings, always start unit
    on "5" to "9" setting.
3. Check igniter for buildup or failure.
11. Unit keeps shutting down
      ("E" codes on control board)
1. Blocked flue (E-4)

2. Blower failure (E-2)

3. Improper installation* (E-4)
1. Check for flue blockage (nests,
    rodents, excess soot, etc.)
2. Check combustion blower
    wires, then call Customer Service.
3. Check for loose flue/pipe
    connections. Also be sure to have
    proper Outside Air hook-up.
12. "E-4" codes on control
1. Hopper lid was left open
    when refueling

2. Door left open or ajar

3. Component Failure

4. Out of fuel

5. E-4 may result for blower
    speed being set too high
1. You must not leave the lid open
     longer than 1 minute. The safety
     shut down switch turns the feed
     auger off when you open the
     hopper lid. Always make sure the
     hopper lid is shut and latched
     when your unit is heating.
2. Always make sure the door is
    closed and latched while your
    unit is running.
3. If you have an auger motor or
    exhaust blower fail you will get an
    E-4 code.
4. If your unit runs out of fuel you will
    get an E-4 code.
5. The heat range is set on 1 and the
    blower speed is set to 9.

*Improper installation may cause a back draft.

Note: Also check for loose or cracked vacuum hose on vacuum switches (see Parts Diagram).

Note: Negative pressure in a home is a serious issue. This unit must be installed with the Outside Air Kit (Part # PU-OAK).