Fix An Unresponsive Vc4™ Touch Screen - Honeywell VC4 User Manual

6.7 Fix an Unresponsive VC4™ Touch Screen
Completely resetting the computer can resolve many issues that cause a frozen/unresponsive
screen. Follow these steps to perform a hard reset:
1. Remove any USB devices from the USB ports of the HMI PC if non-default USB devices
were inserted. The USB connection from touch screen should remain.
2. Turn off the computer by pressing and holding the power button for a few seconds.
3. Turn on the PC by pressing the Power button.
4. Wait until HMI application starts up.
5. Check if touch screen is responsive and all connected analyzers are shown on Overview
screen.
Note: When this occurs, the system will continue to monitor gas.
VC4™ 121 User Manual