{
 "manufacturer": "York",
 "manufacturer_slug": "york",
 "model": "YVAA / YVFA / YAGK E-Link (YorkTalk 2)",
 "model_slug": "yvaa-e-link",
 "short_model": "YVAA E-Link",
 "aliases": [
  "YORK YVAA",
  "YORK YVFA",
  "YAGK",
  "E-Link",
  "eLink",
  "YorkTalk 2",
  "031-02478",
  "031-03478"
 ],
 "equipment_type": "Air-cooled variable-speed screw chiller (via E-Link gateway)",
 "applies_to": "YORK YVAA, YVFA (free cooling) and YAGK air-cooled variable-speed screw chillers with 031-02478 or 031-03478 microboards, connected through a YORK E-Link gateway over YorkTalk 2.",
 "summary": "Before the SC-EQ card, YORK by Johnson Controls YVAA-family chillers reached a BAS through the E-Link gateway, which reads the microboard over YorkTalk 2 (4800 baud) and serves BACnet, N2, LON and Modbus objects. Objects are named by YorkTalk page (YT2_S01_P03 and so on). Section 1 holds the remote commands and core chiller data; section 2 (instances from 101) holds free cooling, Aggreko, power and option points that depend on the microboard program.",
 "bacnet_transport": [],
 "firmware": "C.ACS.20.03 / Y.ACS.20.01 to Y.ACS.20.18 (chiller program)",
 "default_device_instance": null,
 "access_inferred": false,
 "notes": [
  "Object names are the E-Link's YorkTalk page names, not plain-language names; the descriptions say what each one is.",
  "Access follows the sheet's Modbus function note: the first eight objects (AV 1-4, BV 1-4) accept writes; the rest are read-only.",
  "The sheet lists ten chiller program versions with a Standard/Optional/Not available code per point; points marked not available on every version are left out, and many section-2 points only exist on newer programs or with options.",
  "Multistate states are shown as printed (code tables and most enums from 0); the sheet says nothing about adding 1. BACnet multistate values start at 1, so the device may report the printed number + 1; confirm by discovery (read the state text).",
  "The sheet lists BACnet objects but does not name the BACnet transport (MS/TP or IP); check the E-Link setup. The SC-EQ card replaces the E-Link (see the YVAA Style B SC-EQ list).",
  "Units shown are imperial; SI units are in the sheet."
 ],
 "source": {
  "title": "YVAA, YVFA, YAGK York Talk 2 (E-Link) points list, boards 031-02478 / 031-03478",
  "doc_number": null,
  "revision_date": "2021-04-16 (program Y.ACS.20.18)",
  "url": "https://docs.johnsoncontrols.com/chillers/api/khub/documents/HryI9wyjlbuFpbuVIk9XrA/content"
 },
 "integration": {
  "summary": "Put the chiller in remote control (BV 20 reads Remote), then start/stop it with BV 1 and write the remote setpoint (AV 1) and current limit (AV 2) through the E-Link. Read BV 5 for chiller run, the leaving chilled liquid temperature and VSD frequency, and BV 6 for the chiller alarm.",
  "minimum_points": [
   {
    "ref": "BV 1",
    "name": "YT2_S01_P07",
    "why": "Remote start/stop (1 = run)"
   },
   {
    "ref": "AV 1",
    "name": "YT2_S01_P03",
    "why": "Remote leaving chilled liquid setpoint"
   },
   {
    "ref": "AV 2",
    "name": "YT2_S01_P04",
    "why": "Remote current limit, %"
   },
   {
    "ref": "BV 20",
    "name": "YT2_S01_P51",
    "why": "Must read Remote (1) for BMS control"
   },
   {
    "ref": "BV 5",
    "name": "YT2_S01_P36",
    "why": "Chiller running"
   },
   {
    "ref": "AV 5",
    "name": "YT2_S01_P11",
    "why": "Leaving chilled liquid temperature"
   },
   {
    "ref": "AV 27",
    "name": "YT2_S01_P33",
    "why": "Compressor VSD frequency (load indication)"
   },
   {
    "ref": "BV 6",
    "name": "YT2_S01_P37",
    "why": "Chiller alarm (1 = alarm)"
   }
  ],
  "enable": "BV 20 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": [
   "The E-Link talks to the chiller microboard over YorkTalk 2 at 4800 baud for every program version listed.",
   "LON needs the LON version of the E-Link (SNVT_count_f and SNVT_switch only)."
  ],
  "gotchas": [
   "BV 4 switches the data between live values and history buffer 1; leave it at 0 for live data.",
   "The E-Link publishes every possible chiller point, even ones that don't apply to the unit (per the SC-EQ install guide).",
   "Replacing an E-Link with an SC-EQ changes the object names; the SC-EQ guide says to delete the E-Link device and re-discover."
  ]
 },
 "points": [
  {
   "type": "AV",
   "instance": 1,
   "name": "YT2_S01_P03",
   "description": "Remote Setpoint",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2,
   "name": "YT2_S01_P04",
   "description": "Remote Current Limit Setpoint",
   "units": "%",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 3,
   "name": "YT2_S01_P05",
   "description": "Remote Sound Limit",
   "units": "%",
   "access": "W",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 1,
   "name": "YT2_S01_P07",
   "description": "Remote Start/Stop Command",
   "units": "",
   "access": "W",
   "states": "0=Stop, 1=Run"
  },
  {
   "type": "BV",
   "instance": 4,
   "name": "YT2_S01_P10",
   "description": "History buffer 1 request (0 = live data, 1 = history data)",
   "units": "",
   "access": "W",
   "states": "0=Live Data, 1=History 1 Data"
  },
  {
   "type": "AV",
   "instance": 5,
   "name": "YT2_S01_P11",
   "description": "Leaving Chilled Liquid Temp",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 6,
   "name": "YT2_S01_P12",
   "description": "Entering Chilled Liquid Temp",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 7,
   "name": "YT2_S01_P13",
   "description": "VSD Internal Ambient Temp",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 8,
   "name": "YT2_S01_P14",
   "description": "Sys 1 Condenser Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 9,
   "name": "YT2_S01_P15",
   "description": "Sys 1 Discharge Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 10,
   "name": "YT2_S01_P16",
   "description": "Outside Ambient Air Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 11,
   "name": "YT2_S01_P17",
   "description": "Sys 1 Eductor Temperature (Aggreko disabled)",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 12,
   "name": "YT2_S01_P18",
   "description": "Sys 1 Oil Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 13,
   "name": "YT2_S01_P19",
   "description": "Sys 1 Suction Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 14,
   "name": "YT2_S01_P20",
   "description": "Sys 1 Discharge Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 15,
   "name": "YT2_S01_P21",
   "description": "Sys 1 Compressor % Full Load Amps",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 16,
   "name": "YT2_S01_P22",
   "description": "Sys 1 Total Run Hours",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 17,
   "name": "YT2_S01_P23",
   "description": "Sys 1 Total Number of Starts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 18,
   "name": "YT2_S01_P24",
   "description": "Sys 1 Highest Motor Temp",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 19,
   "name": "YT2_S01_P25",
   "description": "Sys 2 Highest Motor Temp",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 20,
   "name": "YT2_S01_P26",
   "description": "Sys 2 Eductor Temperature (Aggreko disabled)",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 21,
   "name": "YT2_S01_P27",
   "description": "Sys 2 Oil Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 22,
   "name": "YT2_S01_P28",
   "description": "Sys 2 Suction Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 23,
   "name": "YT2_S01_P29",
   "description": "Sys 2 Discharge Pressure",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 24,
   "name": "YT2_S01_P30",
   "description": "Sys 2 Compressor % Full Load Amps",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 25,
   "name": "YT2_S01_P31",
   "description": "Sys 2 Total Run Hours",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 26,
   "name": "YT2_S01_P32",
   "description": "Sys 2 Total Number of Starts",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 27,
   "name": "YT2_S01_P33",
   "description": "VSD Output Frequency",
   "units": "Hz",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 28,
   "name": "YT2_S01_P34",
   "description": "Sys 1 Condenser Drain Valve % Open",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 29,
   "name": "YT2_S01_P35",
   "description": "Sys 2 Condenser Drain Valve % Open",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 5,
   "name": "YT2_S01_P36",
   "description": "Chiller Run",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 6,
   "name": "YT2_S01_P37",
   "description": "Chiller Alarm",
   "units": "",
   "access": "R",
   "states": "0=No Alarm, 1=Alarm"
  },
  {
   "type": "BV",
   "instance": 7,
   "name": "YT2_S01_P38",
   "description": "Evaporator Heater Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 8,
   "name": "YT2_S01_P39",
   "description": "Evaporator Pump Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 9,
   "name": "YT2_S01_P40",
   "description": "Sys 1 Compressor Run Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 10,
   "name": "YT2_S01_P41",
   "description": "Sys 2 Compressor Run Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 11,
   "name": "YT2_S01_P42",
   "description": "Sys 1 VI Step Solenoid Valve 1 Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 12,
   "name": "YT2_S01_P43",
   "description": "Sys 2 VI Step Solenoid Valve 1 Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 13,
   "name": "YT2_S01_P44",
   "description": "Sys 1 VI Step Solenoid Valve 2 Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 14,
   "name": "YT2_S01_P45",
   "description": "Sys 2 VI Step Solenoid Valve 2 Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 19,
   "name": "YT2_S01_P50",
   "description": "Cooling Type",
   "units": "",
   "access": "R",
   "states": "0=Water, 1=Glycol"
  },
  {
   "type": "BV",
   "instance": 20,
   "name": "YT2_S01_P51",
   "description": "Local Remote Control Mode",
   "units": "",
   "access": "R",
   "states": "0=Local, 1=Remote"
  },
  {
   "type": "BV",
   "instance": 21,
   "name": "YT2_S01_P52",
   "description": "Display Units",
   "units": "",
   "access": "R",
   "states": "0=Imperial, 1=SI"
  },
  {
   "type": "MV",
   "instance": 1,
   "name": "YT2_S01_P56",
   "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, 72=Discharge Superheat Recovery (Remote Evaporator), 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, 82=Free Cooling, 83=BAS/ISN Motor Current Limiting, 84=Remote Motor Current Limiting, 85=System Shutting Down, 86=VSD Precharging, 87=VSD Baseplate Temp Limiting, 88=VSD Internal Ambient Temp Limiting, 89=Sound Limiting, 90=BAS/ISN Sound Limiting, 91=Remote Sound Limiting, 92=Pulldown Motor Current Limiting, 93=Cooling Demand Shutdown, 94=Input Current Limiting, 95=ISN Input Current Limiting, 96=Remote Input Current Limiting, 97=Pulldown Input Current Limiting"
  },
  {
   "type": "MV",
   "instance": 2,
   "name": "YT2_S01_P57",
   "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, 4=VSD Initialization Failure, 5=Low RTC Battery Voltage, 6=Invalid Number of Compressors Selected, 7=VSD Communications Failure, 8=Precharge Low DC Bus Voltage (Unit), 9=Precharge 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, 19=High Harmonic Filter Temperature, 20=Evap Anti-Freeze Pump Fault, 21=Low Heat Exchanger Temperature, 27=High Discharge Pressure (Software), 28=High Differential Oil Pressure, 29=Low Differential Oil Pressure, 30=Low Suction Pressure, 31=High Discharge Temperature, 33=Eductor Clog Fault, 34=Sensor Failure, 35=Low Motor Current, 36=High Motor Temperature, 37=Precharge Low DC Bus Voltage (System, Frame E/F), 38=Precharge DC Bus Voltage Imbalance (System, Frame E/F), 39=High DC Bus Voltage (System, Frame E/F), 40=Low DC Bus Voltage (System, Frame E/F), 41=DC Bus Voltage Imbalance (System, Frame E/F), 42=High Motor Current, 43=Motor Current Overload (Software), 44=IGBT Gate Driver Fault, 45=High Baseplate Temperature, 46=Single Phase Input (System, Frame E/F), 47=VSD Run Signal Fault, 48=High Discharge Pressure (Hardware/HPCO), 49=Low Suction Suerheat, 50=Control Voltage Fault, 51=Low Discharge Superheat, 52=Low Suction Pressure Smart Freeze, 53=Isolation Valve Failed to Close Warning, 54=Isolation Valve Failed to Open Fault, 55=High Discharge Pressure Rate, 56=Condenser Fan VSD Warning"
  },
  {
   "type": "MV",
   "instance": 3,
   "name": "YT2_S01_P58",
   "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, 72=Discharge Superheat Recovery (Remote Evaporator), 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, 82=Free Cooling, 83=BAS/ISN Motor Current Limiting, 84=Remote Motor Current Limiting, 85=System Shutting Down, 86=VSD Precharging, 87=VSD Baseplate Temp Limiting, 88=VSD Internal Ambient Temp Limiting, 89=Sound Limiting, 90=BAS/ISN Sound Limiting, 91=Remote Sound Limiting, 92=Pulldown Motor Current Limiting, 93=Cooling Demand Shutdown, 94=Input Current Limiting, 95=ISN Input Current Limiting, 96=Remote Input Current Limiting, 97=Pulldown Input Current Limiting"
  },
  {
   "type": "MV",
   "instance": 4,
   "name": "YT2_S01_P59",
   "description": "Sys 2 fault code (sheet labels it Sys 1)",
   "units": "",
   "access": "R",
   "states": "0=No Fault Code, 1=Low Ambient Temperature, 2=High Ambient Temperature, 3=Low Chilled Liquid Temperature, 4=VSD Initialization Failure, 5=Low RTC Battery Voltage, 6=Invalid Number of Compressors Selected, 7=VSD Communications Failure, 8=Precharge Low DC Bus Voltage (Unit), 9=Precharge 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, 19=High Harmonic Filter Temperature, 20=Evap Anti-Freeze Pump Fault, 21=Low Heat Exchanger Temperature, 27=High Discharge Pressure (Software), 28=High Differential Oil Pressure, 29=Low Differential Oil Pressure, 30=Low Suction Pressure, 31=High Discharge Temperature, 33=Eductor Clog Fault, 34=Sensor Failure, 35=Low Motor Current, 36=High Motor Temperature, 37=Precharge Low DC Bus Voltage (System, Frame E/F), 38=Precharge DC Bus Voltage Imbalance (System, Frame E/F), 39=High DC Bus Voltage (System, Frame E/F), 40=Low DC Bus Voltage (System, Frame E/F), 41=DC Bus Voltage Imbalance (System, Frame E/F), 42=High Motor Current, 43=Motor Current Overload (Software), 44=IGBT Gate Driver Fault, 45=High Baseplate Temperature, 46=Single Phase Input (System, Frame E/F), 47=VSD Run Signal Fault, 48=High Discharge Pressure (Hardware/HPCO), 49=Low Suction Suerheat, 50=Control Voltage Fault, 51=Low Discharge Superheat, 52=Low Suction Pressure Smart Freeze, 53=Isolation Valve Failed to Close Warning, 54=Isolation Valve Failed to Open Fault, 55=High Discharge Pressure Rate, 56=Condenser Fan VSD Warning"
  },
  {
   "type": "MV",
   "instance": 5,
   "name": "YT2_S01_P60",
   "description": "Sys 1 Condenser Fan Stage",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 6,
   "name": "YT2_S01_P61",
   "description": "Sys 1 Condenser Fan Speed",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 7,
   "name": "YT2_S01_P62",
   "description": "Sys 2 Condenser Fan Stage",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 8,
   "name": "YT2_S01_P63",
   "description": "Sys 2 Condenser Fan Speed",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 9,
   "name": "YT2_S01_P64",
   "description": "Lead System Number",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 30,
   "name": "YT2_S01_P66",
   "description": "Local Leaving Chilled Liquid Setpoint",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 31,
   "name": "YT2_S01_P67",
   "description": "Low Leaving Chilled Liquid Temp Cutout",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 32,
   "name": "YT2_S01_P68",
   "description": "Sys 1 Economizer Valve % Open",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 33,
   "name": "YT2_S01_P69",
   "description": "Sys 2 Economizer Valve % Open",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 34,
   "name": "YT2_S01_P70",
   "description": "Low Suction Pressure Cutout",
   "units": "PSI",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 35,
   "name": "YT2_S01_P71",
   "description": "VSD DC Bus Voltage",
   "units": "Volts",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 36,
   "name": "YT2_S01_P72",
   "description": "Remote Leaving Chilled Liquid Setpoint",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 37,
   "name": "YT2_S01_P73",
   "description": "Sys 1 subcooling (microchannel) or condenser level (round tube)",
   "units": "°F (diff) / %",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 38,
   "name": "YT2_S01_P74",
   "description": "Cooling Range",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 39,
   "name": "YT2_S01_P75",
   "description": "Sys 1 Discharge Superheat",
   "units": "°F (diff)",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 40,
   "name": "YT2_S01_P76",
   "description": "Sys 2 Condenser Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 41,
   "name": "YT2_S01_P77",
   "description": "Sys 2 Discharge Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 42,
   "name": "YT2_S01_P78",
   "description": "Sys 2 subcooling (microchannel) or condenser level (round tube)",
   "units": "°F (diff) / %",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 43,
   "name": "YT2_S01_P79",
   "description": "Sys 2 Discharge Superheat",
   "units": "°F (diff)",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 25,
   "name": "YT2_S01_P80",
   "description": "Sys 1 Lockout",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 26,
   "name": "YT2_S01_P81",
   "description": "Sys 2 Lockout",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 27,
   "name": "YT2_S01_P82",
   "description": "Flow Switch Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 29,
   "name": "YT2_S01_P84",
   "description": "SCC Auto Detect Available",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 105,
   "name": "YT2_S02_P11",
   "description": "Evaporator Entering Liquid Temp (Free Cooling)",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 106,
   "name": "YT2_S02_P12",
   "description": "Cooling coil temperature (free cooling closed loop) or unit input current",
   "units": "°F / -",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 107,
   "name": "YT2_S02_P13",
   "description": "Heat Exchanger Leaving Temp (Free Cooling Closed Loop)",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 108,
   "name": "YT2_S02_P14",
   "description": "Heat Exchanger Entering Temp (Free Cooling Closed Loop)",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 109,
   "name": "YT2_S02_P15",
   "description": "Glycol Pump Speed (Free Cooling Closed Loop)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 110,
   "name": "YT2_S02_P16",
   "description": "Cooling Coil Valve (Free Cooling Closed Loop)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 111,
   "name": "YT2_S02_P17",
   "description": "Cooling Coil Bypass Valve (Free Cooling Closed Loop)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 112,
   "name": "YT2_S02_P18",
   "description": "Sys 1 Suction Temperature (Aggreko)",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 113,
   "name": "YT2_S02_P19",
   "description": "Sys 1 Sat Suction Temperature (Aggreko)",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 114,
   "name": "YT2_S02_P20",
   "description": "Sys 1 Suction Superheat (Aggreko)",
   "units": "°F (diff)",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 115,
   "name": "YT2_S02_P21",
   "description": "Sys 1 flash tank drain valve % (Aggreko)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 116,
   "name": "YT2_S02_P22",
   "description": "Sys 2 Suction Temperature (Aggreko)",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 117,
   "name": "YT2_S02_P23",
   "description": "Sys 2 Sat Suction Temperature (Aggreko)",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 118,
   "name": "YT2_S02_P24",
   "description": "Sys 2 Suction Superheat (Aggreko)",
   "units": "°F (diff)",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 119,
   "name": "YT2_S02_P25",
   "description": "Sys 2 flash tank drain valve % (Aggreko)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 127,
   "name": "YT2_S02_P33",
   "description": "VSD Command Frequency",
   "units": "Hz",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 105,
   "name": "YT2_S02_P36",
   "description": "Option Indicator",
   "units": "",
   "access": "R",
   "states": "0=Disabled, 1=Enabled"
  },
  {
   "type": "BV",
   "instance": 106,
   "name": "YT2_S02_P37",
   "description": "Free cooling valve (free cooling open loop)",
   "units": "",
   "access": "R",
   "states": "0=Off, 1=On"
  },
  {
   "type": "BV",
   "instance": 107,
   "name": "YT2_S02_P38",
   "description": "Soft Shutdown",
   "units": "",
   "access": "R",
   "states": "0=Disabled, 1=Enabled"
  },
  {
   "type": "BV",
   "instance": 108,
   "name": "YT2_S02_P39",
   "description": "Remote Evaporator",
   "units": "",
   "access": "R",
   "states": "0=Disabled, 1=Enabled"
  },
  {
   "type": "BV",
   "instance": 109,
   "name": "YT2_S02_P40",
   "description": "Quick Start",
   "units": "",
   "access": "R",
   "states": "0=Disabled, 1=Enabled"
  },
  {
   "type": "BV",
   "instance": 111,
   "name": "YT2_S02_P42",
   "description": "Glycol pump run (free cooling closed loop)",
   "units": "",
   "access": "R",
   "states": "0=Off, 1=On"
  },
  {
   "type": "BV",
   "instance": 112,
   "name": "YT2_S02_P43",
   "description": "Glycol heater (free cooling closed loop)",
   "units": "",
   "access": "R",
   "states": "0=Off, 1=On"
  },
  {
   "type": "BV",
   "instance": 117,
   "name": "YT2_S02_P48",
   "description": "Frame E/F",
   "units": "",
   "access": "R",
   "states": "0=Disabled, 1=Enabled"
  },
  {
   "type": "BV",
   "instance": 118,
   "name": "YT2_S02_P49",
   "description": "Sound Limit Option",
   "units": "",
   "access": "R",
   "states": "0=Disabled, 1=Enabled"
  },
  {
   "type": "BV",
   "instance": 119,
   "name": "YT2_S02_P50",
   "description": "SCC Auto Detect Digit 1",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 120,
   "name": "YT2_S02_P51",
   "description": "SCC Auto Detect Digit 2",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 121,
   "name": "YT2_S02_P52",
   "description": "SCC Auto Detect Digit 3",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 122,
   "name": "YT2_S02_P53",
   "description": "SCC Auto Detect Digit 4",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 123,
   "name": "YT2_S02_P54",
   "description": "SCC Auto Detect Digit 5",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 124,
   "name": "YT2_S02_P55",
   "description": "SCC Auto Detect Digit 6",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 101,
   "name": "YT2_S02_P56",
   "description": "Condenser Fan Control Type",
   "units": "",
   "access": "R",
   "states": "1=Std. VSD, 2=Opt. VSD, 3=Std. Staged, 4=Opt. Staged"
  },
  {
   "type": "MV",
   "instance": 102,
   "name": "YT2_S02_P57",
   "description": "Free cooling mode (free cooling option)",
   "units": "",
   "access": "R",
   "states": "0=Mechanical, 1=Free cooling, 2=Hybrid"
  },
  {
   "type": "MV",
   "instance": 103,
   "name": "YT2_S02_P58",
   "description": "Free cooling control programmed (free cooling option)",
   "units": "",
   "access": "R",
   "states": "0=Disabled, 1=OL, 2=CL"
  },
  {
   "type": "MV",
   "instance": 104,
   "name": "YT2_S02_P59",
   "description": "Sys 1 System State",
   "units": "",
   "access": "R",
   "states": "0=Stopped, 1=Running, 2=Faulted, 4=Locked Out, 5=Pre-Run"
  },
  {
   "type": "MV",
   "instance": 105,
   "name": "YT2_S02_P60",
   "description": "Sys 2 System State",
   "units": "",
   "access": "R",
   "states": "0=Stopped, 1=Running, 2=Faulted, 4=Locked Out, 5=Pre-Run"
  },
  {
   "type": "MV",
   "instance": 106,
   "name": "YT2_S02_P61",
   "description": "Sys 1 Warning Code",
   "units": "",
   "access": "R",
   "states": "0=No Warning Set, 1=Quarterly Service Required - Contact JCI, 2=Yearly Service Required - Contact JCI, 3=3 Year Service Required - Contact JCI, 4=5 Year Service Required - Contact JCI, 5=Replace Oil Filter"
  },
  {
   "type": "MV",
   "instance": 107,
   "name": "YT2_S02_P62",
   "description": "Sys 2 Warning Code",
   "units": "",
   "access": "R",
   "states": "0=No Warning Set, 1=Quarterly Service Required - Contact JCI, 2=Yearly Service Required - Contact JCI, 3=3 Year Service Required - Contact JCI, 4=5 Year Service Required - Contact JCI, 5=Replace Oil Filter"
  },
  {
   "type": "AV",
   "instance": 131,
   "name": "YT2_S02_P67",
   "description": "Sys 1 Fan Kw",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 132,
   "name": "YT2_S02_P68",
   "description": "Sys 1 Compressor Kw",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 133,
   "name": "YT2_S02_P69",
   "description": "Sys 2 Fan Kw",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 134,
   "name": "YT2_S02_P70",
   "description": "Sys 2 Compressor Kw",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 135,
   "name": "YT2_S02_P71",
   "description": "DC Bus Voltage 2 (Frame E/F)",
   "units": "Volts",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 129,
   "name": "YT2_S02_P84",
   "description": "Units",
   "units": "",
   "access": "R",
   "states": "0=Imperial, 1=Metric"
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/york/yvaa-e-link",
 "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"
}