CHAPTER
11
Manual No. 016-0171-148 169
C hapter 11
Troubleshooting
Troubleshooting Information
This chapter contains information on troubleshooting possible issues with the Envizio Pro or Envizio Pro II
control system. Please read through this chapter before contacting technical support, as many common issues
and solutions are covered here.
General Issues
Issue Possible Cause Solution
Field computer does
not power up.
• No power to unit • Check for +12V DC on pin 16 of the power cable.
• Blown fuse • Check for continuity in 10 amp fuse in power cable.
• Poor ground • Make sure that pin 1 is connected to the battery ground.
• Unit is locked up
• Disconnect power for approximately 3 seconds and re-
connect.
CAN node(s) not
detected.
• No power to CAN node(s)
• Verify that there is 12 volt power and ground to the CAN
node's logic power
• Weak or dirty power to the
CAN node(s)
• Verify that the 12 volt power to the CAN node is coming from
the switch relay that is connected to the battery
• Water in CAN node(s)
• Do not direct any pressure or wash stream directly at the CAN
node(s) to prevent water and moisture from building up in the
nodes.
• Corrosion in CAN
connections
• Disconnect and clean the CAN connections.
• Broken cable to node • Repair or replace cable.
• Low power voltage • Verify at least +10V DC at node.
Touch screen does
not respond to touch
• Area touched does not
include a selectable
function
• Touch an area of the screen that contains a selectable
function.
• System is busy processing
a previous request
• Wait for system to finish processing previous requests.
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