GSI Outdoors PNEG-552 service manual Wires connected together, the thermostat is faulty

Page 60

10. Troubleshooting

Problem

Possible Cause

 

 

Burner operates but does not cycle from high-fire to

1. Check the gas pressure reading on the gauge. Problem may be

low-fire.

due to insufficient gas regulator setting. Temporarily decrease

 

the High-Low Fire thermostat setting to verify that the

 

thermostat will function and cause the burner to cycle. If burner

 

will cycle at the reduced thermostat setting, it indicates that the

 

problem was due to insufficient heat to satisfy the original

 

setting. Increase the gas regulator setting for additional

 

heat output. Do not exceed the maximum pressure listed in

 

this manual.

 

2. High-Low Fire thermostat control may be defective. If the burner

 

still does not cycle to low-fire after decreasing the thermostat,

 

the problem may be due to a broken or kinked thermostat

 

sensor tube. Observe reading on the thermometer. Replace

 

control assembly if it cannot be set to cause its switch to go

 

to the open circuit position with normally hot air plenum

 

temperatures.

 

3. If the burner continues to operate on high-fire, check the

 

high-fire gas solenoid valve for a stuck or blocked open

 

condition, or for reversed gas pipe connections. The solenoid

 

valve must not allow gas flow when its coil is not energized.

Burner operates but does not cycle from low-fire

1. Check for an excessive low-fire gas pressure setting. Observe

to high-fire.

pressure setting shown on gauge, and compare reading with

 

recommended low pressure settings listed in this manual.

 

Readjust low-fire setting on flow control valve, if necessary.

 

2. Check for improperly adjusted or defective High-Low Fire

 

thermostat control. Temporarily increase the temperature

 

setting. If the heater will still not cycle, check for problem in the

 

control wire connections. The control wires should be connected

 

to terminals R and B of the thermostat, so the switch will open

 

upon temperature rise. If the burner will cycle with these two

 

wires connected together, the thermostat is faulty.

 

3. Check for improperly connected or faulty high-fire gas vapor

 

solenoid valve. Correct any poor connections or defective

 

wiring. If wiring appears proper, problem may be caused by a

 

burned out valve coil or defective valve. Replace high-fire

 

solenoid valve, or its coil, if defective.

If the Load and Unload Auger does not start but

Check the fuse on the I/O Board in the back of the lower

everything else seems to work.

control Box.

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PNEG-552100 Series Dryer

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Page 59 Page 61
Contents Series Dryer PNEG-552100 Series Dryer Contents Table of Contents Safety Guidelines Dryer Operation Emergency StopSafety Precautions Use Caution in the Operation of this EquipmentDecal DC-1224 Decal DC-889Safety Alert Decals Decal DC-972Decal DC-1227 Decal DC-1225Decal DC-1229 Regulations Decal DC-973Dryer Control Panel Dryer Control Panel Featuring the 100 Series Control System Moisture ControlUnload Switch Dryer Power Stop Switch Setting the Dry, Cool, Unload and Out of Grain Timers Monitoring Grain Temperatures, Plenum Temperature or Timers Special Features Safety Circuit Shut Down MessagesLoss of Flame Error Conditions Error Conditions Set Control Switches Inspect the Metering RollsElectrical Power Control Power SwitchPower Start Button Fuel CheckFan Switch Metering Roll OperationBurner Safety Heater Test FireStaged Batch Check LP Gas Natural GasDryer Shut Down Stopping Dryer OperationRef # Description Continuous Flow Operation Full Start-Up CheckFilling the Dryer Fan Setting Heater Setting Fan Function Heater Function Staged Batch OperationPNEG-552 100 Series Dryer Series Batch Timer Settings Starting the DryerAdjusting the Temperature Full Heat Continuous Flow Operation Adjusting the Moisture Control Initial Moisture Full Heat ApproximateMoisture % Removed pts Speed Dry Time min Low High Seasonal Inspection and Service Hours of Service per Year Range Suggested Lube IntervalLubrication Procedures Suggested LubricantsAdditional Checks Insulation Class Consistency Type Grease Frame TypeRef # Description Fan Propeller Removal and Installation Threaded Bushing HolesClearance Holes Fan Motor Removal and Installation Fan Blade RemovalPosition of Fan Motor Heater Parts Removal and Installation Metering Roll Servicing Main ControlsHow to Determine a Metering Roll Problem As necessary. See FHow to Clear a Jammed Metering Roll Series Single Fan Wiring to Control Box Series Front Panel External Wiring Series Front Panel Internal Wiring Series Lower Back Panel Wiring Series External Wiring to Dryer Series Upper Control Box Wiring Series Main Power Wiring Series Control Schematic Series Control Schematic PNEG-552 100 Series Dryer Series 220 Volt 1 Phase Power Schematic Series 220VAC 3 Phase Power Schematic Series 440VAC 3 Phase Power Schematic Problem Possible Cause Press the dryer power start button Display shows Vapor High Temperature Display shows Plenum High Temperature Display shows Grain High TemperaturePlenum High Temperature messages at Display shows Rear Discharge WarningTroubleshooting Wires connected together, the thermostat is faulty FAQs PNEG-552100 Series Dryer GSI Group Warranty
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