Grain Systems PNEG-1181 - Manual (Page 30)

30 PNEG-1181 Portable Dryer Troubleshooting
8. Troubleshooting Tips
Possible Safety Circuit Shut Down Messages (Continued)
NETWORK FAILED: Input/Output
This error occurs when the Input/Output Board (upper control panel) has lost its communications link
with the Master Display Board (lower control panel) and the fan/heater Boards. Check the blue and
yellow wires marked N1-01 and N1-02 on a three (3) terminal plug to make sure they are plugged in
tightly. Check and make sure the blue and yellow wires have continuity between each other (blue to blue
and yellow to yellow). There are three (3) LED lights next to the three (3) terminal plug, one is for power
and the others indicate data being transmitted between the boards. The two labeled RXD and TXD
should be flashing randomly back and forth, this indicates network activity. Press stop to clear.
NETWORK FAILED: MAST
This error occurs when the Master Display Board (lower control panel) has lost its communications
link with the Input/Output Board (upper control panel) and the fan/heater Boards. Check the blue and
yellow wires marked N1-01 and N1-02 on a three (3) terminal plug to make sure they are plugged in
tightly. Also check and make sure the blue and yellow wires have continuity between each other
(blue to blue and yellow to yellow). Press stop to clear.