Single & Dual Zone Heat Trace Control Panel | Valin Corporation
TROUBLESHOOTING
System Frequently Asked Questions
Issue
Explanation
Solution
Alarm message will
not clear
Alarm message is displayed even
after process is within set parameters.
• If Latching is enabled in the Alarm Settings Menu, Alarms must be reset in the
Active Alarms screen.
• Disable Latching if Alarm messages may be automatically cleared when
process is within set parameters.
Alarm will not reset
Alarm will not reset and Latching is
disabled.
• Process must be within set parameters for alarms to be reset. Check the Alarm
Setpoints Menu to ensure setpoint values are correct.
Unable to access
menu
Menu will not display after being selected. • Log into security level required for the menu. Refer to Security Levels chart on
page 20.
HMI LED
Indicator Flashing
The red LED indicator on HMI is flashing
• For serial comms only. If serial communications are disabled, LED will remain
off.
• Modbus communications have been set up but are unable to be established.
Check communications port to verify connection is made.
• Review the Communications Error section below for further information.
Serial
Communications Error
Cannot connect to AccuTrace™ via
Serial communications
• Verify settings in the Serial Port Settings Screen. The address must be unique
from other devices connected to PLC/PC.
• Verify that serial communications have been enabled. Refer to page 51 for more
information.
• Examine communications connections. Refer to Communications Wiring section
on page 18.
• Establish correct communications address on external device.
• Set external device to operate at the same baud rate as AccuTrace™. Refer to
Communications section page 51.
• Route communication wiring separately from power wiring.
Ethernet
Communications Error
Cannot connect to AccuTrace™ via
Ethernet communications
• Verify that peripheral devices (devices other than AccuTrace™ and PC/PLC)
do not have the same IP Address as AccuTrace™. This will create an IP conflict
error and re-direct you to the Ethernet Port Settings Screen.
• Route communication wiring separately from power wiring.
• Establish correct communications port on external device.
• Examine communications connections. Refer to Communications Wiring section
on page 19.
Lost Password
Password is lost or invalid
• Contact Valin
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