41
TROUBLESHOOTING CONTINUED
SYMPTOM | TEST SOLUTION |
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Feed rate dial has no effect on the fire (timer control only)
-Secure all connections to the power control module.
-Perform a resistance test to the potentiometer by placing the two test leads
from a multi meter into the leads of the potentiometer. The potentiometer should have a range of 850 KΩ (± 10%).
Potentiometer Readings:
Full
Low fi re .......... 900 KΩ to 1,050 KΩ High fi re ......... 56 KΩ to 62 KΩ
If the range is not close or does not vary then replace the potentiometer.
The convection | - Using the wiring diagram, compare all the connections between the controller, switch, |
blower is not | and the convection blower. |
functioning nor- - If the convection motor will not run, apply 115V AC to the motor directly. Replace the
mally | blower controller if the motor runs. The convection blower has failed if the motor does |
| not run. Replace the blower. |
| - If the convection blower runs on high at all times (no control with the blower controller), |
| check the connections from the 160°F (71°C) sensor (located on the upper left side on |
| the rear of the fi re wall) and convection blower controller to the blower. Disconnect one |
| of the wires from the sensor and if control of the convection blower returns to the |
| blower controller, replace the sensor. |
| - If the motor is still on high, |
| controller. |
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The heater will | General |
not operate when - Check the hopper for fuel. | |
hot | - Incorrect air damper setting may cause excessive air to consume the fi re too quickly |
before the next drop of fuel. Therefore leaving the fuel completely unburned in the burn pot and will cause the fuel to burn cold and very slowly. Fuel also may build up and smother the fi re.
NOTE: The unit may require a change to the vent system or installation of fresh air to correct air to fuel ratio problems.
- Combustion blower failure may occur because it is not turning fast enough to generate the proper vacuum in the fi re box. Do a visual check to see if the motor is turning.
- Check vacuum levels in the exhaust channel by bypassing the vacuum switch, then remove the vacuum hose from vacuum switch. When checking the vacuum exhaust place the open end of the vacuum hose on the gauge (readings must be above 0.10" W.C. on low fi re). (NOTE: if the motor fails to reach a 0.10" W.C., then replace the combustion blower).
- Poor quality fuel may not produce enough heat to keep the stove burning or operational.
- If the exhaust temperature sensor fails try bypassing the sensor located on the exhaust blower. If the stove operates properly, the unit may require cleaning or a new sensor. Contact your local deal for service.
- Unplug the stove, open the left side panel and jump the two brown leads that are attached to the 140°F (60°C) temperature sensor. If the stove operates replace the 140°F (60°C) sensor.
