Effective 2/2/2001
Page 35
I.L. 70C1037H03
Symptom
Probable Cause
Possible Solution(s)
References
Light load.
Check breaker ordering
information.
Refer to Sections 1.6 and
1.6.1
LCD Display is not energized.
No auxiliary power unit.
Check voltage input terminals
A14 – A15.
Refer to Sections 1.6 and
1.6.1
Wrong Address
Check Address
See Section 4.9
Check for Aux. Power – A14,
A15
No Power
Check Status LED and
Transmit LED
See Figure 1.1 and Refer to
Section 1.6
Check Communications
Wiring – B1, B2
See Appendix C
Circuit breaker containing
Digitrip 520MC* does not
communicate with PowerNet
or BIM.
* Only Digitrip 520MC styles
have communication features.
Hardware Problem
Missing Termination Resistor
See Figure 4.9
