Airstream PNEG-343 service manual May not be turning. The air switch may need adjustment

TROUBLE ANALYSIS PROCEDURE

Problem	Possible Cause
Display shows "FAN 1, 2 OR 3 FAILURE-NO AIRFLOW"	The air switch contacts have opened, indicating the fan
message.*	may not be turning. The air switch may need adjustment.
Display shows "FAN 1, 2 OR 3 CANNOT START-CHECK	The air switch contacts have closed prior to the fan
AIR SWITCH" message.*	starting, indicating a freewheeling blade or improper setting
	of air switch.

Fan motor will not start.

1.Check that the fan circuit breaker and the fan switch are on. Also, check for defective switch or bad wiring connections.

2.If lighted switch does not light, the air switch needs adjustment, or the bulb may be burned out.

3.Verify closing of fan motor contactor. Check voltage on load side of contactor. See appropriate power wiring circuit diagram for terminal numbers. Inspect contactor for defective points or a burned out coil.

4.Inspect connections, and check voltage applied to the motor leads in the fan heater box to determine if the motor is defective.

5.Check capacitors on single phase motors, and replace if defective. If motor starts slowly, check for low voltage during starting due to excessive voltage drop in power supply wiring.

Top auger will not start.

1.Check that the top auger circuit breaker and the load auger switch are turned on.

2.If lighted switch does not light, the output power to the contactor is missing. Check connections, or if the bulb is burned out.

3.Check position of the upper auger paddle switch. It must be down to start auger.

4.Inspect for secure mounting and wiring of mercury switch in the terminal box on the top auger paddle switch shaft. Include check for a defective mercury switch.

5.Verify closing of the top auger contactor. Check voltage on load side of contactor. Inspect contactor for defective points, or a burned out coil.

6.Inspect connections, and check voltage applied to motor leads in motor junction box to determine if motor is defective.

7.Check that the mercury switch box is in the proper position.

Bottom auger will not start.

1.Check that the bottom auger circuit breaker is on.

2.If the lighted switch does not light, the output power to the contractor is missing. Check connections, and check to see if the bulb is burned out.

3.Check that the unload switch is on (1 or 2 speed).

4.Verify closing of bottom auger contactor; check voltage on load side of contactor.

5.If using the moisture control, check for proper setting, or defective operation of the control.

6.Check for any loose wire connections in unload auger and moisture control thermostat circuits.

Grain not moving through columns.

1.Check the dryer for fine material buildup inside the columns.

2.Avoid leaving the dryer columns full for long periods at a time (2-3 days) while not operating the dryer, or during rainy weather.

*The number in the warning message designates the fan, burner or plenum where the problem is located. All areas are numbered from the bottom up. For example, the bottom fan is number 1, and the top fan is number 3.

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