ATS48 PHF fault

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Hello everybody,

My ATS48C17Q (170A) is experiencing a PHF error when I press RUN. I have restored the default settings and loaded the old program, but the issue persists. Currently, I've installed a new soft starter and it runs OK. The old soft starter runs fine when I adjust the SST (Small motor) parameter to test a small motor.

Experts, please help me. Thank you, everyone.

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