Eaton PT 10 Instruction Manual page 47

Table B1. Troubleshooting (Continued).
Symptom
The LCD display is not energized.
The Status LED indicator is red
continuously or blinking red.
The circuit breaker is tripping, and
the orange LED indicator (not red) is
illuminated next to SHORT text.
Probable Cause
The current flowing through the breaker
is less than the minimum current
requirement for the LCD display, or
there is no auxiliary power (24 Vdc)
connected to the controller.
The circuit breaker MCR auxiliary switch
is not indicating proper state.
The circuit breaker mechanism is not
properly closed
Internal memory problem.
The circuit breaker MCR auxiliary switch
is not indicating proper state.
The circuit breaker mechanism is not
closed properly.
Possible Solutions
Apply auxiliary power.
Check the auxiliary switch.
Contact your Eaton representative for
factory assistance.
Replace the trip unit.
Check the MCR switch or contact
your Eaton representative for factory
assistance.
Contact your Eaton representative for
factory assistance.
PT UNIT USER MANUAL APRIL 2023 www.eaton.com.cn
Appendix B - Troubleshooting
Reference
See Section 6.2: Auxiliary Power.
See the Instructions for Auxiliary Switch.
See Section 4.8: Making Current Release.
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