Carrier Infinity 25VNA0 Service Manual

Also see for Infinity 24VNA0: Owner's manual

1824VNA0 EVENT / FAULT (CONT.)OPERATION FLASH CODE (Amber LED) RESET TIMEminutesHighest Priority (Code 1) FAULT Event(Message Displayed on User Interface) Possible Causes ACTIONSystem Malfunction 85 240 COMPRESSOR TEMP LOCKOUTMultiple Error 59 --- ”CompressorScroll Temp Out of Range” within twohours of run timeSystem will try to ride through currentspikes and self ---recover in trip condition;persistent Error 59 --- ”Compressor ScrollTemp Out of Range” trips will lead to Error85; (Refer to Error 59 troubleshooting)Multiple Error 71 --- ”Compressor MotorTemp Out of Range” within twohours of run timeSystem will try to ride through currentspikes and self ---recover in trip condition;persistent Error 71 --- ”Compressor MotorTemp Out of Range” trips will lead to Error85; (Refer to Error 71 troubleshooting)System Malfunction 86 15 INVERTER CABLE FAULTLoose input power wire Ensure the input power connections are secureLoose communication harness between invert-er and circuit boardEnsure plug is connected to ODU control orinverterSystem Malfunction 88 240 INVERTER TEMP LOCKOUTBlocked Inverter Heat Exchanger (fins) Check Inverter fins for debris and clean if nec-essaryOutdoor Airflow too low or offCheck Condenser (IDU in heating, ODU incooling) for clogging (ice or debris) and clean ifnecessary; Troubleshoot Condenser fan motorand make sure it is workingOutside Normal Operating Range (e.g.outside cooling ambient temperaturerange etc)Consult Application GuidelinesInverter internal damage Replace InverterEvent 91 15 INVERTER VDC ---OUT OVER VOLTAGEEVENTHigh DC Voltage spikes in DC voltage mea-sured by the Inverter driveSystem will try to ride through voltage spikesand self ---recover in trip condition; persistentover current trips will lead to Error 97 ”HighVoltage Lockout” (Refer to Error 97 trou-bleshooting)Event 92 15 INVERTER VDC ---OUT UNDER VOLTAGEEVENTLow DC Voltage dropouts in DC voltage mea-sured by the Inverter driveSystem will try to ride through voltage dropoutsand self ---recover in trip condition; persistentover current trips will lead to Error 96 ”Low Volt-age Lockout” (Refer to Error 96 troubleshoot-ing)Event 93 15 230VAC UNDER VOLTAGE EVENT Low AC Voltage dropouts in AC voltage mea-sured by the Inverter driveSystem will try to ride through voltage dropoutsand self ---recover in trip condition; contact pow-er utility providerEvent 94 15 230VAC OVER VOLTAGE EVENT High AC Voltage spikes in AC voltage mea-sured by the Inverter driveSystem will try to ride through voltage spikesand self ---recover in trip condition; contact pow-er utility providerSystem Malfunction 95 120 HIGH CURRENT LOCKOUTHigh supply line voltage (> 257 VAC) Check supply voltage to Outdoor Unit; if highcontact utility providerStorm weather causing intermittent voltagespikesWhen adverse weather subsides unit shouldself ---recover; cycle ODU power if necessaryLoose wire in control box area Check for loose wire in ODUGround lead from Compressor attached towinding power connectionEnsure compressor ground and other leads arecorrectly installedInverter internal damage Replace inverterCompressor Winding damage Replace compressor