Grain Systems PNEG-1181 - Manual (Page 27)

8. Troubleshooting Tips
PNEG-1181 Portable Dryer Troubleshooting 27
Possible Safety Circuit Shut Down Messages (Continued)
ILLEGAL FLAME X
Illegal Flame 1: This message is displayed when the flame detection circuit of the heater senses flame
when the burner is supposed to be OFF. Example, after being shut down, the dryer and the heater
continue to burn due to a solenoid stuck open. The error message will show in which heater the illegal flame
has occurred.
MOTOR OVERLOAD X
Motor Overload 1: This indicates that one of the fan motor thermal overloads has opened. This
overload is located in the fan/can box on the side of the fan/heater housing. The overload must be
manually reset by pushing the red button. The message will display in which fan the overload has
occurred. If the error does not clear after resetting the overload and pushing the stop button. You might
have to check in the fan/heater interface located nearest that same fan/can. The overload is connected
to the fan/heater interface. This is the only overload that is located here, the rest are located in the upper
main panel. Refer to the
Motor Overload below for more motor overload information.
Use a voltmeter on the following terminals:
Black Probe (J7-10) DC negative
Red Probe (J7-15) 12 VDC output
Red Probe (J7-04) 12 VDC when closed
Input/Output Errors
The following is a list of errors that are generated with the Input/Output board. This board is located in
the upper control box of your Network Dryer.
Motor Overload
The following are messages that may show up under this shut down. These overloads are located in the
upper panel. This means that the thermal overload has opened on the motor indicated on the display.
The overload has to be manually reset by pushing the red button on the overload. This indicates that
this motor might be operating under an abnormal work load. This condition causes the motor to pull more
current (ampere) over its rated full load ampere. It may be necessary to have an electrician to check the
motors operating amperage. The name tag on the motor will indicate the full load ampere (FLA) in
relationship with the incoming voltage. The overload has a normally closed set of contacts. To these
contacts from the Input/Output board is sent 12 VDC, when the overload opens so do these contacts.
Below will indicate which terminals to check for that particular overload shut down. When checking DC
voltage you must have a DC negative. The DC negative is located on the Input/Output board where the
network connections are terminated. It is a three terminal block connection, use the unused terminal for
the DC negative. Refer
Input/Output Board Voltage Testing Wiring .
LOAD MOTOR OVERLOAD
Use a voltmeter on the following terminals:
Black probe-unused terminal where the network connections are terminated (Input/Output Board)
Red probe (J3-09) 12 VDC output
Red probe (J2-11) 12 VDC when closed