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    • Member Post

      Member Post posted an update

      July 8, 2026

      I have a 500 ton York YK chiller thats getting a Harmonic Filter-Logic Board or Communications shutdown. I disabled the Harmonic Filter because we were in the middle of a heat wave. Unit started and has been running. Does anyone know how to troubleshoot this alarm. The manual doesn’t give much direction. Any help would be greatly appreciated. Thanks

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