Carrier Infinity 25VNA0 Service Manual

Also see for Infinity 24VNA0: Owner's manual

2825VNA0 EVENT / FAULT (CONT.)OPERATIONFLASH CODE (AmberLED)RESET TIMEminutesHighest Priority (Code 1) FAULT Event(Message Displayed on User Interface)Heat or CoolMode Possible Causes ACTIONEvent 93 15 230VAC UNDER VOLTAGE EVENT Both Low AC Voltage dropouts in AC voltagemeasured by the Inverter driveSystem will try to ride through voltagedropouts and self ---recover in trip condi-tion; contact power utility providerEvent 94 15 230VAC OVER VOLTAGE EVENT Both High AC Voltage spikes in AC voltagemeasured by the Inverter driveSystem will try to ride through voltagespikes and self ---recover in trip condition;contact power utility providerSystem Malfunction 95 120 HIGH CURRENT LOCKOUT BothHigh supply line voltage (> 257 VAC)Check supply voltage to Outdoor Unit; ifhigh contact utility providerStorm weather causing intermittent volt-age spikesWhen adverse weather subsides unitshould self ---recover; cycle ODU power ifnecessaryLoose wire in control box area Check for loose wire in ODUGround lead from Compressor attachedto winding power connectionEnsure compressor ground and otherleads are correctly installedInverter internal damage Replace inverterCompressor Winding damage Replace compressorSystem Malfunction 96 120 VDC UNDER VOLTAGE LOCKOUT BothLow supply line voltage (< 180 VAC)Check supply voltage to ODU; if low con-tact utility providerStorm weather causing intermittent volt-age dropoutsWhen adverse weather subsides unitshould self ---recover; cycle ODU power ifnecessaryLoose wire in control box area Loose wire: check for loose wire in ODUInverter internal damage Replace InverterSystem Malfunction 97 120 VDC OVER VOLTAGE LOCKOUT BothHigh supply line voltage (> 257 VAC)Check supply voltage to ODU; if high con-tact utility providerStorm weather causing intermittent volt-age spikesWhen adverse weather subsides unitshould self ---recover; cycle ODU power ifnecessaryInverter internal damage Replace InverterEvent 98 10 HIGH TORQUE EVENT BothHigh Torque or Flank Loading EventSystem will try to self ---mitigate, persistentconditions will lead to lockout (refer to Er-ror Code 99)