Table 7-5 Troubleshooting Power Failure Symptoms; Table 7-6 Troubleshooting Latching Output Relay Failure - Honeywell UDC2300 Product Manual

Troubleshooting/Service
Procedure #1
Table 7-5 explains how to troubleshoot power failure symptoms.

Table 7-5 Troubleshooting Power Failure Symptoms

Step
Check the AC line voltage.
1
2 Make sure the chassis plugs into
the rear of the case properly.
Check the system for Brown-
3
outs, heavy load switching, etc.,
and conformance to installation
instructions.
Change Main board.
4
Procedure #2
Table 7-6 explains how to troubleshoot Latching Output Relay failure.

Table 7-6 Troubleshooting Latching Output Relay Failure

Step
Make sure all the configurable
1
data stored in the controller is
correct. Reconfigure, if
necessary.
Check that the Latching Relay
2
actuates properly.
Check the Latching Relay
3
jumper position (NO or NC).
60
What to do
What to do
UDC2300 Limit Controller Product Manual
How to do it
Use a voltmeter to measure the AC voltage across
terminals L1 and L2 on the rear terminal panel of the
controller.
Check the earth ground connection.
Withdraw the chassis and visually inspect the
controller board and the inside of the case.
Refer to Section 2 - Installation.
Installation instructions supplied with new board.
How to do it
Refer to Section 4 - Configuration to check all this
data and how to reconfigure.
Move the setpoint above or below the PV value,
depending on the type of Limit Control configured.
Listen for the click of the relay as the setpoint is
moved above or below the PV.
Refer to subsection 2.4 Limit Control and Alarm
Relay Contact Information for Relay Contact
information.
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