GSI Outdoors PNEG-552 Display shows Rear Discharge Warning, Display shows Plenum High Temperature

10. Troubleshooting

Problem	Possible Cause
Display shows “HOUSING HIGH TEMPERATURE”	The temperature high-limit located on the fan/burner housing has
message.	opened, indicating an over temperature condition has occurred
	towards the rear of the fan/heater housing. (This control is a 200°F
	limit control that must be manually reset.)
Display shows “REAR DISCHARGE WARNING”	The cover on the grain discharge box has opened, indicating that
message.	grain is backing up into the discharge box.
Display shows “OUT OF GRAIN” message.	The dryer has run low on grain, and the out of grain timer has timed
	out shutting the dryer down. The unload auger will then clean-out
	the dryer, if the unload switch is ON during continuous flow
	operation. Check the out of grain timer setting, and if necessary
	adjust. Also, before restarting, inspect load equipment for possible
	damage or adjustment.
Display shows “PLENUM HIGH TEMPERATURE”	An over temperature condition has occurred inside the dryer
message.	Plenum. (This control is a 300°F limit which automatically resets
	when it cools.)
Display shows “NO AIRFLOW” message.	The air switch contacts have opened, indicating the fan may not be
	turning. The air switch may need adjustment.
Display shows “Grain High Temperature” message	An over temperature condition has occurred in the Dryer Grain
	Columns. This control is a 200°F limit which automatically resets
	when it cools. It may require the use of the Emergency Cool
	Feature as described on Page 18.
Display shows “Grain High Temperature” and	One of both of the mechanical high-limits located one in each grain
“Plenum High Temperature” messages at the	column have tripped. Note that the Emergency Cooling
same time	Feature will not work in this case, open the back access door to
	help speed the cooling of the grain. Replace the mechanical
	sensor if faulty.
Fan motor does 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 Diagrams 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 does 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.

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PNEG-552100 Series Dryer