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