HP R1500 G3 UPS UPS cannot communicate with the host computer, UPS emits a slight clicking noise

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UPS cannot communicate with the host computer

Action:

•Verify only one communications port is connected to the host computer ("Connecting the host computer" on page 14).

•If an option card is installed, verify the host computer is only connected to the option card. Installing an option card automatically disables the built-in serial and USB communications ports.

UPS emits a slight clicking noise

Action: The UPS is automatically correcting high or low AC voltage on the utility line. No action is required.

Site wiring condition

Action: Contact a qualified electrician to be sure that:

•The line and neutral wires are not reversed in the wall outlet.

•A ground wire connection does not exist.

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Contents Part Number August Edition HP R1500 G3 UPS User GuidePage Contents Power Protector software Ordering spares UPS spare parts list Hardware optionsBefore you contact HP HP contact information Electrostatic discharge Component identification UPS R1500 G3 overviewUPS front panel UPS front panel LED indicators UPS front panel controlsDescription Function UPS R1500 G3 NA/JPN/TWN rear panel LED descriptionDescription UPS R1500 G3 Intl rear panel Precautions InstallationPreparing to install the hardware Tools requiredReadying the equipment Installing the UPSConnecting the batteries Attaching the UPS front bezel Connecting the host computer Selecting the UPS voltage configurationConnecting the Network Transient Protectors Connecting devices to the UPS Connecting the UPS to utility powerInstalling the optional UPS Network Module Powering up the UPSCharging the UPS batteries Installation Connecting the UPS Network Module UPS operations Silencing an audible alarmModes of operation Initiating a self-testPowering down the UPS Maintenance Important battery safety informationRemoving the UPS front bezel Replacing the batteries UPS battery replacement procedure Battery care and storage guidelinesMaintenance Testing the new battery module Replacing the UPSReplacing the UPS option card Updating the UPS firmware Configuring a USB to serial converterReassigning the USB COM ports Maintenance Power Protector software Power managementPower management LED and audible alarm troubleshooting TroubleshootingAlarm LED Be silenced Green Yellow Red 20?UPS frequently switches between utility and battery power UPS operates on battery onlyUPS does not provide the expected backup time UPS does not startSite wiring condition UPS cannot communicate with the host computerUPS emits a slight clicking noise UPS physical specifications SpecificationsUPS input specifications UPS output specificationsVoltage specifications Battery specificationsOutput tolerance specifications Output feature specificationsEnvironmental specifications Battery runtimePin number Signal name Function Direction from the UPS Serial communications port pin assignmentGND Spares UPS spare parts listOrdering spares Hardware optionsSupport and other resources Before you contact HPHP contact information Limited warranty Warranty information$250,000 Computer Load Protection Guarantee Pre-Failure Battery WarrantyRecommended duration of use Regulatory compliance notices Regulatory compliance identification numbersFederal Communications Commission notice Cables ModificationsCanadian notice Avis Canadien Class a equipmentEuropean Union regulatory notice Japanese notice Bsmi notice Korean notice Power cord statement for Japan Battery replacement noticeElectrostatic discharge Preventing electrostatic dischargeGrounding methods to prevent electrostatic discharge Acronyms and abbreviations Documentation feedback Index Maintenance 22 modifications, FCC notice
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