Enviro EF3 - Manual (Page 29)

29
Troubleshooting
6. The auger motor will not function normally.
● If the Auger gear box does not turn but the motor’s armature does try to spin then the auger is
jammed. – Try to break apart jam by poking at the jam through the drop tube. If this fails then empty
the hopper and remove the Auger Cover **Remember to re-seal the cover after installation**
● Make sure the exhaust blower is operating.
● Check the condition of the vacuum hose (located on the left side of the stove). It should not be
cracked or torn and should be installed on the top air inlet tube on the vacuum sensor.
● Check the manual reset button on the 200°F (93°C) temperature sensor. If this sensor has been
tripped, check for the cause of the over-heating before pushing the red button in. Check auger for
movement.
● If the auger still does not work, then apply 115 V AC directly to the auger motor. If the auger motor
does not work, replace it.
● By pass the 200°F (93°C) temperature sensor with a jumper wire; check the auger. If the auger
works, replace the sensor.
● Check the vacuum sensor by placing a jumper wire between the blue wire and the black wire that
are attached to the sensor. If the auger works, test to see if the exhaust blower is producing enough
vacuum.
● To test the exhaust vacuum, place a magnehelic gauge in the sensor end of the vacuum tube. It
should read 0.5” W.C. If the reading is good, replace the vacuum sensor.
● If none of the below work contact your local dealer for service.
◊ Make sure the dial-a-fire is turned on.
◊ Unplug the stove and open the side and back panels. Check all the connections to the auger motor,
auger dial-a-fire, vacuum sensor, 200°F (93°C) temperature sensor and the timing control module
against the wiring diagram in this manual.
◊ Check the voltage across the load pins of the timing module. It should be around 1 V to 2 V, cycling
to line voltage during an auger pulse. If not, replace the timing control module.
◊ If the auger motor still does not work, then attempt to by-pass the auger dial-a-fire control by
removing the leads from the timing control module’s second delay pins and placing a jumper across
the pins. If the auger now cycles very quickly, test the dial-a-fire potentiometer. If the auger did not
cycle, replace the timing control module.
◊ To test the dial-a-fire potentiometer, the potentiometer should have a range of 68KΩ to approximately
850 KΩ (± 10%). If the range is not close, replace the potentiometer.
7. The dial-a-fire has no effect on the fire (Timer Control Only).
◊ Make sure all connections to the timer control module are secure.
◊ Perform a resistance test to the dial-a-fire potentiometer by placing the two (2) test leads from a
multimeter into the leads of the potentiometer. The potentiometer should have a range of 68KΩ to
approximately 850 KΩ (± 10%).
Potentiometer Readings:
Full counter-clockwise (switched off) = open circuit, overload or infinite resistance
Low fire ...............................800 KΩ to 900 KΩ
High fire ..............................68 KΩ to 82 KΩ
If the range is not close or does not vary then replace the potentiometer.