{
 "manufacturer": "York",
 "manufacturer_slug": "york",
 "model": "YCAV / YCIV Air-Cooled Screw Chiller (native BACnet MS/TP)",
 "model_slug": "ycav-yciv",
 "short_model": "YCAV / YCIV",
 "aliases": [
  "YORK YCAV",
  "YORK YCIV",
  "031-03478",
  "YCAV_IV Native",
  "Latitude"
 ],
 "equipment_type": "Air-cooled variable-speed screw chiller",
 "applies_to": "YORK YCAV and YCIV air-cooled variable-speed screw chillers (up to four refrigerant systems) with the 031-03478 microboard and its native BAS port.",
 "summary": "YORK by Johnson Controls YCAV and YCIV chillers with the 031-03478 microboard have BACnet MS/TP, Modbus RTU and N2 built in, so no gateway is needed. The BAS writes a remote setpoint, current limit, sound limit and start/stop (AV 1-3, BV 1). Everything else is read-only analog and binary inputs: chilled liquid and ambient temperatures, per-system pressures, temperatures, % FLA, hours, starts, flash tank values, operational and fault codes, and alarms.",
 "bacnet_transport": [
  "BACnet MS/TP"
 ],
 "firmware": "Y.ACS.14.03 to Z.ACS.31.03 (031-03476 program parts listed in the sheet)",
 "default_device_instance": null,
 "access_inferred": false,
 "notes": [
  "Access follows the sheet's sections: analog and binary write points (AV 1-3, BV 1) and read-only points (AI, BI).",
  "Points for systems 3 and 4 only report on units with that many systems; values that don't apply are sent as zero.",
  "Operational and fault codes are numeric AIs; the states list the code values from the sheet's code table.",
  "Spare objects (AV 4, BV 2-3) are left out. Units shown are imperial; SI units are in the sheet (pressures in bar)."
 ],
 "source": {
  "title": "YCAV YCIV Modbus, BACnet MS/TP, N2 Data Map (YCAV_IV Native)",
  "doc_number": null,
  "revision_date": "2017-02-17",
  "url": "https://docs.johnsoncontrols.com/chillers/api/khub/documents/DsvsbvlZNgkCrndB1NvZpg/content"
 },
 "integration": {
  "summary": "Put the chiller in remote control (BI 14 reads Remote), then start/stop it with BV 1 and write the remote setpoint (AV 1) and current limit (AV 2). Read each system's state, the leaving chilled liquid temperature and VSD frequency, and the two alarm inputs.",
  "minimum_points": [
   {
    "ref": "BV 1",
    "name": "START_STOP",
    "why": "Remote start/stop (1 = run)"
   },
   {
    "ref": "AV 1",
    "name": "REM_SETP",
    "why": "Remote leaving chilled liquid setpoint"
   },
   {
    "ref": "AV 2",
    "name": "DMD_LIMIT",
    "why": "Remote current limit, % FLA"
   },
   {
    "ref": "BI 14",
    "name": "LOCAL_REMOTE",
    "why": "Must read Remote (1) for BMS control"
   },
   {
    "ref": "AI 86",
    "name": "S1_SYS_STATE",
    "why": "System 1 state (stopped, running, faulted)"
   },
   {
    "ref": "AI 1",
    "name": "LCHLT",
    "why": "Leaving chilled liquid temperature"
   },
   {
    "ref": "AI 45",
    "name": "VSD_OUT_FR",
    "why": "Compressor VSD frequency (load indication)"
   },
   {
    "ref": "BI 1",
    "name": "S13_ALARM",
    "why": "Systems 1/3 alarm"
   },
   {
    "ref": "BI 2",
    "name": "S24_ALARM",
    "why": "Systems 2/4 alarm"
   }
  ],
  "enable": "BI 14 shows Local or Remote control mode. The sheet gives no point to change it and no write-enable point.",
  "heartbeat": "Operational code 67 is 'Loss Of External Communications'; the sheet gives no timeout or heartbeat point.",
  "remote_sensors": null,
  "setup": [
   "BACnet MS/TP, Modbus RTU and N2 are native on the 031-03478 board; a gateway is only needed for Connected Services.",
   "The sheet gives no default MAC address, baud rate or device instance."
  ],
  "gotchas": [
   "Most data are AI/BI objects, not AV/BV; only the four write points are values.",
   "Fault and operational codes are per system (AI 50-57); there is no single unit fault code, so alarm on BI 1 and BI 2."
  ]
 },
 "points": [
  {
   "type": "AV",
   "instance": 1,
   "name": "REM_SETP",
   "description": "Remote Setpoint",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2,
   "name": "DMD_LIMIT",
   "description": "Remote Current Limit Setpoint",
   "units": "% FLA",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 3,
   "name": "SND_LIMIT",
   "description": "Remote Sound Limit",
   "units": "%",
   "access": "W",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 1,
   "name": "START_STOP",
   "description": "Remote Start / Stop Command",
   "units": "",
   "access": "W",
   "states": "0=Stop, 1=Run"
  },
  {
   "type": "AI",
   "instance": 1,
   "name": "LCHLT",
   "description": "Leaving Chilled Liquid Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 2,
   "name": "ECHLT",
   "description": "Entering Chilled Liquid Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 3,
   "name": "VSD_IA_TEMP",
   "description": "VSD Internal Ambient Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 4,
   "name": "S1_SUCT_TEMP",
   "description": "Sys 1 Suction Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 5,
   "name": "S2_SUCT_TEMP",
   "description": "Sys 2 Suction Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 6,
   "name": "S3_SUCT_TEMP",
   "description": "Sys 3 Suction Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 7,
   "name": "S4_SUCT_TEMP",
   "description": "Sys 4 Suction Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 8,
   "name": "S1_DSCH_TEMP",
   "description": "Sys 1 Discharge Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 9,
   "name": "S2_DSCH_TEMP",
   "description": "Sys 2 Discharge Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 10,
   "name": "S3_DSCH_TEMP",
   "description": "Sys 3 Discharge Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 11,
   "name": "S4_DSCH_TEMP",
   "description": "Sys 4 Discharge Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 12,
   "name": "OAT",
   "description": "Ambient Air Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 13,
   "name": "S1_OIL_TEMP",
   "description": "Sys 1 Oil Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 14,
   "name": "S2_OIL_TEMP",
   "description": "Sys 2 Oil Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 15,
   "name": "S3_OIL_TEMP",
   "description": "Sys 3 Oil Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 16,
   "name": "S4_OIL_TEMP",
   "description": "Sys 4 Oil Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 17,
   "name": "S1_OIL_PRESS",
   "description": "Sys 1 Oil Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 18,
   "name": "S2_OIL_PRESS",
   "description": "Sys 2 Oil Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 19,
   "name": "S3_OIL_PRESS",
   "description": "Sys 3 Oil Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 20,
   "name": "S4_OIL_PRESS",
   "description": "Sys 4 Oil Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 21,
   "name": "S1_SUCT_PRES",
   "description": "Sys 1 Suction Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 22,
   "name": "S2_SUCT_PRES",
   "description": "Sys 2 Suction Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 23,
   "name": "S3_SUCT_PRES",
   "description": "Sys 3 Suction Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 24,
   "name": "S4_SUCT_PRES",
   "description": "Sys 4 Suction Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 25,
   "name": "S1_DSCH_PRES",
   "description": "Sys 1 Discharge Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 26,
   "name": "S2_DSCH_PRES",
   "description": "Sys 2 Discharge Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 27,
   "name": "S3_DSCH_PRES",
   "description": "Sys 3 Discharge Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 28,
   "name": "S4_DSCH_PRES",
   "description": "Sys 4 Discharge Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 29,
   "name": "S1_MC_FLA",
   "description": "Sys 1 Motor Current FLA",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 30,
   "name": "S2_MC_FLA",
   "description": "Sys 2 Motor Current FLA",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 31,
   "name": "S3_MC_FLA",
   "description": "Sys 3 Motor Current FLA",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 32,
   "name": "S4_MC_FLA",
   "description": "Sys 4 Motor Current FLA",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 33,
   "name": "S1_OP_HRS",
   "description": "Sys 1 Operating Hours",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 34,
   "name": "S2_OP_HRS",
   "description": "Sys 2 Operating Hours",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 35,
   "name": "S3_OP_HRS",
   "description": "Sys 3 Operating Hours",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 36,
   "name": "S4_OP_HRS",
   "description": "Sys 4 Operating Hours",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 37,
   "name": "S1_COMP_ST",
   "description": "Sys 1 Compressor Starts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 38,
   "name": "S2_COMP_ST",
   "description": "Sys 2 Compressor Starts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 39,
   "name": "S3_COMP_ST",
   "description": "Sys 3 Compressor Starts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 40,
   "name": "S4_COMP_ST",
   "description": "Sys 4 Compressor Starts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 41,
   "name": "S1_HI_MTR_T",
   "description": "Sys 1 Highest Motor Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 42,
   "name": "S2_HI_MTR_T",
   "description": "Sys 2 Highest Motor Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 43,
   "name": "S3_HI_MTR_T",
   "description": "Sys 3 Highest Motor Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 44,
   "name": "S4_HI_MTR_T",
   "description": "Sys 4 Highest Motor Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 45,
   "name": "VSD_OUT_FR",
   "description": "VSD Output Frequency",
   "units": "Hz",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 46,
   "name": "S1_FEED",
   "description": "Sys 1 Flash Tank Feed Valve %",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 47,
   "name": "S2_FEED",
   "description": "Sys 2 Flash Tank Feed Valve %",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 48,
   "name": "S3_FEED",
   "description": "Sys 3 Flash Tank Feed Valve %",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 49,
   "name": "S4_FEED",
   "description": "Sys 4 Flash Tank Feed Valve %",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 50,
   "name": "S1_OP_CODE",
   "description": "Sys 1 Operational Code",
   "units": "",
   "access": "R",
   "states": "63=Manual Override, 64=Daily Schedule Shutdown, 65=Unit Switch OFF, 66=Remote Controlled Shutdown, 67=Loss Of External Communications, 68=Flow Switch Shutdown, 69=VSD Cooling Shutdown, 70=Serial Number Shutdown, 71=Password Shutdown (AGR), 74=No Run Permissive, 75=Anti-Recycle Timer Active, 76=System Switch OFF, 77=System Not Running, 78=System Running, 79=Discharge Pressure Limiting, 80=Suction Pressure Limiting, 81=Motor Current Limiting, 83=ISN/BAS Motor Current Limiting, 84=Remote Motor Current Limiting, 85=System Shutting Down, 86=VSD Pre-Charging, 87=VSD Baseplate Temp Limiting, 88=VSD Internal Ambient Temp Limiting, 89=Sound Limiting, 90=ISN Sound Limiting, 91=Remote Sound Limiting, 92=Pulldown Motor Current Limiting, 93=Cooling Demand Shutdown, 94=System HPCO (Fan Special)"
  },
  {
   "type": "AI",
   "instance": 51,
   "name": "S2_OP_CODE",
   "description": "Sys 2 Operational Code",
   "units": "",
   "access": "R",
   "states": "63=Manual Override, 64=Daily Schedule Shutdown, 65=Unit Switch OFF, 66=Remote Controlled Shutdown, 67=Loss Of External Communications, 68=Flow Switch Shutdown, 69=VSD Cooling Shutdown, 70=Serial Number Shutdown, 71=Password Shutdown (AGR), 74=No Run Permissive, 75=Anti-Recycle Timer Active, 76=System Switch OFF, 77=System Not Running, 78=System Running, 79=Discharge Pressure Limiting, 80=Suction Pressure Limiting, 81=Motor Current Limiting, 83=ISN/BAS Motor Current Limiting, 84=Remote Motor Current Limiting, 85=System Shutting Down, 86=VSD Pre-Charging, 87=VSD Baseplate Temp Limiting, 88=VSD Internal Ambient Temp Limiting, 89=Sound Limiting, 90=ISN Sound Limiting, 91=Remote Sound Limiting, 92=Pulldown Motor Current Limiting, 93=Cooling Demand Shutdown, 94=System HPCO (Fan Special)"
  },
  {
   "type": "AI",
   "instance": 52,
   "name": "S3_OP_CODE",
   "description": "Sys 3 Operational Code",
   "units": "",
   "access": "R",
   "states": "63=Manual Override, 64=Daily Schedule Shutdown, 65=Unit Switch OFF, 66=Remote Controlled Shutdown, 67=Loss Of External Communications, 68=Flow Switch Shutdown, 69=VSD Cooling Shutdown, 70=Serial Number Shutdown, 71=Password Shutdown (AGR), 74=No Run Permissive, 75=Anti-Recycle Timer Active, 76=System Switch OFF, 77=System Not Running, 78=System Running, 79=Discharge Pressure Limiting, 80=Suction Pressure Limiting, 81=Motor Current Limiting, 83=ISN/BAS Motor Current Limiting, 84=Remote Motor Current Limiting, 85=System Shutting Down, 86=VSD Pre-Charging, 87=VSD Baseplate Temp Limiting, 88=VSD Internal Ambient Temp Limiting, 89=Sound Limiting, 90=ISN Sound Limiting, 91=Remote Sound Limiting, 92=Pulldown Motor Current Limiting, 93=Cooling Demand Shutdown, 94=System HPCO (Fan Special)"
  },
  {
   "type": "AI",
   "instance": 53,
   "name": "S4_OP_CODE",
   "description": "Sys 4 Operational Code",
   "units": "",
   "access": "R",
   "states": "63=Manual Override, 64=Daily Schedule Shutdown, 65=Unit Switch OFF, 66=Remote Controlled Shutdown, 67=Loss Of External Communications, 68=Flow Switch Shutdown, 69=VSD Cooling Shutdown, 70=Serial Number Shutdown, 71=Password Shutdown (AGR), 74=No Run Permissive, 75=Anti-Recycle Timer Active, 76=System Switch OFF, 77=System Not Running, 78=System Running, 79=Discharge Pressure Limiting, 80=Suction Pressure Limiting, 81=Motor Current Limiting, 83=ISN/BAS Motor Current Limiting, 84=Remote Motor Current Limiting, 85=System Shutting Down, 86=VSD Pre-Charging, 87=VSD Baseplate Temp Limiting, 88=VSD Internal Ambient Temp Limiting, 89=Sound Limiting, 90=ISN Sound Limiting, 91=Remote Sound Limiting, 92=Pulldown Motor Current Limiting, 93=Cooling Demand Shutdown, 94=System HPCO (Fan Special)"
  },
  {
   "type": "AI",
   "instance": 54,
   "name": "S1_FTL_CODE",
   "description": "Sys 1 Fault Code",
   "units": "",
   "access": "R",
   "states": "0=No Fault Code, 1=Low Ambient Temperature, 2=High Ambient Temperature, 3=Low Chilled Liquid Temperature, 5=Low RTC Battery Voltage, 6=Invalid Number of Compressors Selected, 7=VSD Communications Failure, 8=Pre-charge Low DC Bus Voltage (Unit), 9=Pre-charge DC Bus Voltage Imbalance (Unit), 10=High DC Bus Voltage (Unit), 11=Low DC Bus Voltage (Unit), 12=DC Bus Voltage Imbalance (Unit), 13=High VSD Ambient Temperature, 14=Single Phase Input (Unit), 15=VSD Power Supply Fault, 16=VSD Logic Board Fault, 17=Motor Current Overload (Hardware), 18=CT Plug Fault, 27=High Discharge Pressure (Software), 28=High Differential Oil Pressure, 29=Low Differential Oil Pressure, 30=Low Suction Pressure, 31=High Discharge Temperature, 32=High Oil Temperature, 33=Low Suction Superheat, 34=Sensor Failure, 35=Low Motor Current, 36=High Motor Temperature, 37=Pre-charge Low DC Bus Voltage (System 1/3, 2/4), 38=Pre-charge DC Bus Voltage Imbalance (System 1/3, 2/4), 39=High DC Bus Voltage (System 1/3, 2/4), 40=Low DC Bus Voltage (System 1/3, 2/4), 41=DC Bus Voltage Imbalance (System 1/3, 2/4), 42=High Motor Current, 43=Motor Current Overload (Software), 44=IGBT Gate Driver Fault, 45=High Baseplate Temperature, 46=Single Phase Input (System 1/3, 2/4), 47=VSD Run Signal Fault, 48=High Discharge Pressure (Hardware - HPCO), 49=High Flash Tank Level, 50=Control Voltage Fault, 51=Low Discharge Superheat"
  },
  {
   "type": "AI",
   "instance": 55,
   "name": "S2_FLT_CODE",
   "description": "Sys 2 Fault Code",
   "units": "",
   "access": "R",
   "states": "0=No Fault Code, 1=Low Ambient Temperature, 2=High Ambient Temperature, 3=Low Chilled Liquid Temperature, 5=Low RTC Battery Voltage, 6=Invalid Number of Compressors Selected, 7=VSD Communications Failure, 8=Pre-charge Low DC Bus Voltage (Unit), 9=Pre-charge DC Bus Voltage Imbalance (Unit), 10=High DC Bus Voltage (Unit), 11=Low DC Bus Voltage (Unit), 12=DC Bus Voltage Imbalance (Unit), 13=High VSD Ambient Temperature, 14=Single Phase Input (Unit), 15=VSD Power Supply Fault, 16=VSD Logic Board Fault, 17=Motor Current Overload (Hardware), 18=CT Plug Fault, 27=High Discharge Pressure (Software), 28=High Differential Oil Pressure, 29=Low Differential Oil Pressure, 30=Low Suction Pressure, 31=High Discharge Temperature, 32=High Oil Temperature, 33=Low Suction Superheat, 34=Sensor Failure, 35=Low Motor Current, 36=High Motor Temperature, 37=Pre-charge Low DC Bus Voltage (System 1/3, 2/4), 38=Pre-charge DC Bus Voltage Imbalance (System 1/3, 2/4), 39=High DC Bus Voltage (System 1/3, 2/4), 40=Low DC Bus Voltage (System 1/3, 2/4), 41=DC Bus Voltage Imbalance (System 1/3, 2/4), 42=High Motor Current, 43=Motor Current Overload (Software), 44=IGBT Gate Driver Fault, 45=High Baseplate Temperature, 46=Single Phase Input (System 1/3, 2/4), 47=VSD Run Signal Fault, 48=High Discharge Pressure (Hardware - HPCO), 49=High Flash Tank Level, 50=Control Voltage Fault, 51=Low Discharge Superheat"
  },
  {
   "type": "AI",
   "instance": 56,
   "name": "S3_FTL_CODE",
   "description": "Sys 3 Fault Code",
   "units": "",
   "access": "R",
   "states": "0=No Fault Code, 1=Low Ambient Temperature, 2=High Ambient Temperature, 3=Low Chilled Liquid Temperature, 5=Low RTC Battery Voltage, 6=Invalid Number of Compressors Selected, 7=VSD Communications Failure, 8=Pre-charge Low DC Bus Voltage (Unit), 9=Pre-charge DC Bus Voltage Imbalance (Unit), 10=High DC Bus Voltage (Unit), 11=Low DC Bus Voltage (Unit), 12=DC Bus Voltage Imbalance (Unit), 13=High VSD Ambient Temperature, 14=Single Phase Input (Unit), 15=VSD Power Supply Fault, 16=VSD Logic Board Fault, 17=Motor Current Overload (Hardware), 18=CT Plug Fault, 27=High Discharge Pressure (Software), 28=High Differential Oil Pressure, 29=Low Differential Oil Pressure, 30=Low Suction Pressure, 31=High Discharge Temperature, 32=High Oil Temperature, 33=Low Suction Superheat, 34=Sensor Failure, 35=Low Motor Current, 36=High Motor Temperature, 37=Pre-charge Low DC Bus Voltage (System 1/3, 2/4), 38=Pre-charge DC Bus Voltage Imbalance (System 1/3, 2/4), 39=High DC Bus Voltage (System 1/3, 2/4), 40=Low DC Bus Voltage (System 1/3, 2/4), 41=DC Bus Voltage Imbalance (System 1/3, 2/4), 42=High Motor Current, 43=Motor Current Overload (Software), 44=IGBT Gate Driver Fault, 45=High Baseplate Temperature, 46=Single Phase Input (System 1/3, 2/4), 47=VSD Run Signal Fault, 48=High Discharge Pressure (Hardware - HPCO), 49=High Flash Tank Level, 50=Control Voltage Fault, 51=Low Discharge Superheat"
  },
  {
   "type": "AI",
   "instance": 57,
   "name": "S4_FLT_CODE",
   "description": "Sys 4 Fault Code",
   "units": "",
   "access": "R",
   "states": "0=No Fault Code, 1=Low Ambient Temperature, 2=High Ambient Temperature, 3=Low Chilled Liquid Temperature, 5=Low RTC Battery Voltage, 6=Invalid Number of Compressors Selected, 7=VSD Communications Failure, 8=Pre-charge Low DC Bus Voltage (Unit), 9=Pre-charge DC Bus Voltage Imbalance (Unit), 10=High DC Bus Voltage (Unit), 11=Low DC Bus Voltage (Unit), 12=DC Bus Voltage Imbalance (Unit), 13=High VSD Ambient Temperature, 14=Single Phase Input (Unit), 15=VSD Power Supply Fault, 16=VSD Logic Board Fault, 17=Motor Current Overload (Hardware), 18=CT Plug Fault, 27=High Discharge Pressure (Software), 28=High Differential Oil Pressure, 29=Low Differential Oil Pressure, 30=Low Suction Pressure, 31=High Discharge Temperature, 32=High Oil Temperature, 33=Low Suction Superheat, 34=Sensor Failure, 35=Low Motor Current, 36=High Motor Temperature, 37=Pre-charge Low DC Bus Voltage (System 1/3, 2/4), 38=Pre-charge DC Bus Voltage Imbalance (System 1/3, 2/4), 39=High DC Bus Voltage (System 1/3, 2/4), 40=Low DC Bus Voltage (System 1/3, 2/4), 41=DC Bus Voltage Imbalance (System 1/3, 2/4), 42=High Motor Current, 43=Motor Current Overload (Software), 44=IGBT Gate Driver Fault, 45=High Baseplate Temperature, 46=Single Phase Input (System 1/3, 2/4), 47=VSD Run Signal Fault, 48=High Discharge Pressure (Hardware - HPCO), 49=High Flash Tank Level, 50=Control Voltage Fault, 51=Low Discharge Superheat"
  },
  {
   "type": "AI",
   "instance": 58,
   "name": "S1_LEVEL",
   "description": "Sys 1 Flash Tank Level %",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 59,
   "name": "S2_LEVEL",
   "description": "Sys 2 Flash Tank Level %",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 60,
   "name": "S3_LEVEL",
   "description": "Sys 3 Flash Tank Level %",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 61,
   "name": "S4_LEVEL",
   "description": "Sys 4 Flash Tank Level %",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 62,
   "name": "S1_FAN_STG",
   "description": "Sys 1 Condenser Fan Stage",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 63,
   "name": "S2_FAN_STG",
   "description": "Sys 2 Condenser Fan Stage",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 64,
   "name": "S3_FAN_STG",
   "description": "Sys 3 Condenser Fan Stage",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 65,
   "name": "S4_FAN_STG",
   "description": "Sys 4 Condenser Fan Stage",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 66,
   "name": "LEAD",
   "description": "Lead refrigerant system number",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 67,
   "name": "LCHLT_SETP",
   "description": "Leaving Chilled Liquid Setpoint",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 68,
   "name": "LCHLT_CUTOUT",
   "description": "Leaving Chilled Liquid Cutout",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 69,
   "name": "S1_DRAIN",
   "description": "Sys 1 Flash Tank Drain Valve %",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 70,
   "name": "S2_DRAIN",
   "description": "Sys 2 Flash Tank Drain Valve %",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 71,
   "name": "S3_DRAIN",
   "description": "Sys 3 Flash Tank Drain Valve %",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 72,
   "name": "S4_DRAIN",
   "description": "Sys 4 Flash Tank Drain Valve %",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 73,
   "name": "SUCT_PRS_CUT",
   "description": "Suction Pressure Cutout",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 74,
   "name": "VSD_DCB_V_13",
   "description": "VSD DC Bus Voltage Sys 1/3",
   "units": "Volts",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 75,
   "name": "VSD_DCB_V_24",
   "description": "VSD DC Bus Voltage Sys 2/4",
   "units": "Volts",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 76,
   "name": "REM_SETPOINT",
   "description": "Remote Leaving Chilled Liquid Setpoint",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 77,
   "name": "S1_SUC_SHEAT",
   "description": "Sys 1 Suction Superheat",
   "units": "°F (diff)",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 78,
   "name": "S2_SUC_SHEAT",
   "description": "Sys 2 Suction Superheat",
   "units": "°F (diff)",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 79,
   "name": "S3_SUC_SHEAT",
   "description": "Sys 3 Suction Superheat",
   "units": "°F (diff)",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 80,
   "name": "S4_SUC_SHEAT",
   "description": "Sys 4 Suction Superheat",
   "units": "°F (diff)",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 81,
   "name": "COOLING_RNG",
   "description": "Cooling Range",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 82,
   "name": "S1_DSC_SHEAT",
   "description": "Sys 1 Discharge Superheat",
   "units": "°F (diff)",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 83,
   "name": "S2_DSC_SHEAT",
   "description": "Sys 2 Discharge Superheat",
   "units": "°F (diff)",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 84,
   "name": "S3_DSC_SHEAT",
   "description": "Sys 3 Discharge Superheat",
   "units": "°F (diff)",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 85,
   "name": "S4_DSC_SHEAT",
   "description": "Sys 4 Discharge Superheat",
   "units": "°F (diff)",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 86,
   "name": "S1_SYS_STATE",
   "description": "Sys 1 System State",
   "units": "",
   "access": "R",
   "states": "0=Stopped, 1=Running, 2=Faulted, 4=Locked Out, 5=Pre-Run"
  },
  {
   "type": "AI",
   "instance": 87,
   "name": "S2_SYS_STATE",
   "description": "Sys 2 System State",
   "units": "",
   "access": "R",
   "states": "0=Stopped, 1=Running, 2=Faulted, 4=Locked Out, 5=Pre-Run"
  },
  {
   "type": "AI",
   "instance": 88,
   "name": "S3_SYS_STATE",
   "description": "Sys 3 System State",
   "units": "",
   "access": "R",
   "states": "0=Stopped, 1=Running, 2=Faulted, 4=Locked Out, 5=Pre-Run"
  },
  {
   "type": "AI",
   "instance": 89,
   "name": "S4_SYS_STATE",
   "description": "Sys 4 System State",
   "units": "",
   "access": "R",
   "states": "0=Stopped, 1=Running, 2=Faulted, 4=Locked Out, 5=Pre-Run"
  },
  {
   "type": "AI",
   "instance": 90,
   "name": "S1_MTR_OVER",
   "description": "Sys 1 Motor Current Overload Setting",
   "units": "Amps",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 91,
   "name": "S2_MTR_OVER",
   "description": "Sys 2 Motor Current Overload Setting",
   "units": "Amps",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 92,
   "name": "S3_MTR_OVER",
   "description": "Sys 3 Motor Current Overload Setting",
   "units": "Amps",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 93,
   "name": "S4_MTR_OVER",
   "description": "Sys 4 Motor Current Overload Setting",
   "units": "Amps",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 1,
   "name": "S13_ALARM",
   "description": "Sys 1/3 Alarm",
   "units": "",
   "access": "R",
   "states": "0=No Alarm, 1=Alarm"
  },
  {
   "type": "BI",
   "instance": 2,
   "name": "S24_ALARM",
   "description": "Sys 2/4 Alarm",
   "units": "",
   "access": "R",
   "states": "0=No Alarm, 1=Alarm"
  },
  {
   "type": "BI",
   "instance": 3,
   "name": "EVAP_HEATER",
   "description": "Evaporator Heater Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 4,
   "name": "EVAP_PUMP",
   "description": "Evaporator Pump Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 5,
   "name": "S1_COMP_RUN",
   "description": "Sys 1 Compressor Run Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 6,
   "name": "S2_COMP_RUN",
   "description": "Sys 2 Compressor Run Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 7,
   "name": "S3_COMP_RUN",
   "description": "Sys 3 Compressor Run Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 8,
   "name": "S4_COMP_RUN",
   "description": "Sys 4 Compressor Run Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 9,
   "name": "S1_ECON_SV",
   "description": "Sys 1 Economizer Solenoid Valve Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 10,
   "name": "S2_ECON_SV",
   "description": "Sys 2 Economizer Solenoid Valve Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 11,
   "name": "S3_ECON_SV",
   "description": "Sys 3 Economizer Solenoid Valve Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 12,
   "name": "S4_ECON_SV",
   "description": "Sys 4 Economizer Solenoid Valve Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 13,
   "name": "WATER_GLYCOL",
   "description": "Cooling Type",
   "units": "",
   "access": "R",
   "states": "0=Water, 1=Glycol"
  },
  {
   "type": "BI",
   "instance": 14,
   "name": "LOCAL_REMOTE",
   "description": "Local Remote Control Mode",
   "units": "",
   "access": "R",
   "states": "0=Local, 1=Remote"
  },
  {
   "type": "BI",
   "instance": 15,
   "name": "DISP_UNITS",
   "description": "Display Units",
   "units": "",
   "access": "R",
   "states": "0=Imperial, 1=SI"
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/york/ycav-yciv",
 "note": "Provided as-is. Point availability varies by firmware and options; verify against the live device.",
 "disclaimer": "DISCLAIMER: reference only, provided AS IS with no warranty. May contain errors or be out of date. You must verify every point against the manufacturer's current documentation and the live device before use. easybacnet.com accepts no liability for its use and is not affiliated with the manufacturer. Terms: https://easybacnet.com/terms#content"
}