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Any HPE ARCS Cooling Unit Rack (P9E36A) or HPE ARCS v2 Cooling Unit Rack (R8N93A) may show critical errors for the Dew point reading. When this occurs, the value is not calculated and instead it is displayed as two dashes ("--").An error pattern similar to the following may be displayed in the syslog.cmc;2021-05-02T02:04:01.688792-04:00ARCS1 CMC_Log: Device 2 (Adaptive Rack Cooling System) @3.01, Dewpoint Control:Off (< °F, 64.0 °F)2021-05-02T02:09:02.289928-04:00ARCS1 CMC_Log: Device 2 (Adaptive Rack Cooling System) @3.01, Dew Point: Alarm(< °F)2021-05-02T02:09:02.296449-04:00ARCS1 CMC_Log: Device 2 (Adaptive Rack Cooling System) @3.01, Dewpoint Control:Error (5.4 °F, 0.0 °F)2021-05-02T02:09:03.684225-04:00ARCS1 CMC_Log: Device 2 (Adaptive Rack Cooling System) @3.01, Dew Point: OK(32.4 °F)2021-05-02T02:09:03.689305-04:00ARCS1 CMC_Log: Device 2 (Adaptive Rack Cooling System) @3.01, Dewpoint Control:Off (< °F, 64.0 °F)2021-05-02T07:38:07.805813-04:00ARCS1 CMC_Log: Device 2 (Adaptive Rack Cooling System) @3.01, Dew Point: OK(32.0 °F)2021-05-02T07:38:07.819139-04:00ARCS1 CMC_Log: Device 2 (Adaptive Rack Cooling System) @3.01, Dew PointAverage: OK (33.3 °F)2021-05-02T07:38:10.088217-04:00ARCS1 CMC_Log: Device 2 (Adaptive Rack Cooling System) @3.01, Dew Point: Alarm(< °F)2021-05-02T07:38:10.098896-04:00ARCS1 CMC_Log: Device 2 (Adaptive Rack Cooling System) @3.01, Dew PointAverage: Too Low (< °F)2021-05-02T08:03:04.820137-04:00ARCS1 CMC_Log: Device 2 (Adaptive Rack Cooling System) @3.01, Dew Point: OK(32.1 °F)
Either of the following HPE Adaptive Rack Cooling Systems:HPE ARCS Cooling Unit Rack (P9E36A)HPE ARCS v2 Cooling Unit Rack (R8N93A)
To resolve this issue, download and install the following firmware component:HPE Modular Cooling System MCS300 ARCS Unit Firmware Version 4.17.30(1)RECEIVE PROACTIVE UPDATES: Receive support alerts (such as Customer Advisories), as well as updates on drivers, software, firmware, and customer replaceable components, proactively in your e-mail through HPE Support Alerts. Sign up for Support Alerts at the following URL:HPE Email Preference CenterNAVIGATION TIP:For hints on navigating HPE.com to locate the latest drivers, patches and other support software downloads, refer to theNavigation Tips document.SEARCH TIP:For hints on locating similar documents on HPE.com, refer to theSearch Tips document.>
Operating Systems Affected:Not Applicable
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