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W415-0616 / B / 02.18.08
38
TROUBLESHOOTING CONTINUED
SYMPTOM TEST SOLUTION
The 200°F (93°)
high limit tem-
perature sensor
has tripped
The heater will
not turn off
The heater keeps
going out
Excessive carbon
build up in the
fi rebox, low heat
out put
- Reset the sensor and determine whether it was the convection blower or 160°F (71°C)
temperature sensor failure. Bypass the 160°F (71°C) sensor. Does the convection
blower not come on high? If no than replace the blower.
- Disconnect one of the brown wires from the exhaust temperature sensor and if the unit
continues to operate, contact your local dealer for service.
- Compare the wiring diagram to the start control module and the connections to the
140°F (60°C) temperature sensor. Check the connections.
- Remove one of the brown wires from the 140°F (60°C) temperature sensor. The heater
should be shut down right away as long as the start button was not pressed within 15
minutes of this test. If the heater shuts down within 15 minutes, replace the 140°F
(60°C) sensor. If the heater does not shut down in 15 minutes, test the switch.
- The heater must be cold to test the switch. Pull the plug, then plug the heater back in. If
the heater fails to start, replace the switch.
- Due to different installation set ups, length and size of venting and fuel quality, the low
feed setting from the factory will not always be correct. It may be necessary to
experiment with feed rate vs air control. (For example, #2 may be your lowest setting).
- If the heater goes out and leaves fresh unburned pellets or cigarette-like ashes in the
burn pot, the fi re is going out before the heater shuts off.
- Check to see if the air control rod is in the correct position.
- Turn the feed rate up slightly (poor quality pellets will require slightly higher settings).
- Check to see if the heater needs a more complete cleaning as well as the burn pot,
venting, etc...
- Was there a power failure?
- Contact your local dealer for service
- If the heater goes out and there are no pellets in the liner, the auger is stopping.
- See "The auger motor will not function normally" and "The exhaust blower will not
function normally".
- Check quality of pellets. Even pellets from the same manufacturer can vary in quality
since the materials they use to form pellets may also vary.
- Moisture content of pellets too high. Pellets must be stored in a dry place. Areas such
as a garage are too damp causing pellets to absorb moisture.