{
 "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": "Re-typed from the manufacturer's public documentation (see source). Point availability varies by firmware and options; verify against the live device."
}