Copeland 10 Flashes

Critical

CoreSense — Over-Current Protection — current at the PROT terminal exceeds 2A for 40ms; module is mis-wired or the contactor coil is shorted to ground (Flash Code 10, red, not listed on the module label).

Copeland 10 Flashes: Over-Current Protection — current at the PROT terminal exceeds 2A for 40ms; module is mis-wired or the contactor coil is shorted to ground (Flash Code 10, red, not listed on the module label). This fault typically halts operation and needs immediate attention.

Possible causes

Module is mis-wired.
Contactor coil shorted to ground.

Check steps

Check module wiring against the diagram.
Test contactor coil for ground fault.

Affected parts

Kontaktorspule
CoreSense-Modul

Safety note

Isolate power before testing.

Source: Emerson AE8-1385 CoreSense Diagnostics for Copeland Scroll UltraTech Compressors (2011), Code 10 description, p.5

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