{
 "manufacturer": "AAON",
 "manufacturer_slug": "aaon",
 "model": "DX Chiller Controller",
 "model_slug": "dx-chiller-controller",
 "aliases": [
  "AAON DX Chiller Controller",
  "Main DX Chiller Controller",
  "G054280",
  "SS1149",
  "AAON DX chiller BACnet"
 ],
 "equipment_type": "DX chiller controller",
 "applies_to": "AAON packaged DX chillers (non-Turbocor compressors) with the Main DX Chiller Controller, refrigerant modules and optional waterside economizer and evaporative condenser modules.",
 "summary": "The Main DX Chiller Controller controls leaving water temperature on AAON DX chillers and has an on-board BACnet MS/TP port. The object map has 54 read-only analog inputs (water and refrigerant temperatures and pressures for circuits A and B, WSE and evaporative condenser data), 39 analog values (setpoints, run command, relay enables) and 86 read-only binary inputs for status, faults, warnings and lockouts, plus one multistate input for the unit mode.",
 "bacnet_transport": [
  "BACnet MS/TP"
 ],
 "firmware": "Controller code version 1.00 and later",
 "default_device_instance": null,
 "access_inferred": true,
 "notes": [
  "The guide gives no read/write column; AI, BI and MI are shown read-only and AV writable from the object types and the limit ranges.",
  "Circuit A and B points (prefix A- / B-) and the WSE and evaporative condenser (EVAP) points report only when those modules are fitted.",
  "Binary input descriptions are the guide's value type column (Status, Alarm, Fault, Warning, Lockout).",
  "Source: Appendix F BACnet parameters, guide pages 63-68."
 ],
 "source": {
  "title": "DX Chiller Controller Technical Guide",
  "doc_number": "G054280 Rev. 01B",
  "revision_date": "2020-02",
  "url": "https://www.aaon.com/hubfs/Controls%20Literature/G054280-DXCHILLER-01B-200203.pdf"
 },
 "integration": {
  "summary": "Connect the on-board MS/TP port and set MAC address, device ID and baud on the LCD. The BAS starts and stops the chiller with AV 34 Auto/Run/Off and sets the leaving water target with AV 1. Monitor the operating status MI, the water temperatures and the system alarm BI.",
  "minimum_points": [
   {
    "ref": "AV 34",
    "name": "Auto/Run/Off Command",
    "why": "Chiller command: 0 auto, 1 run, 2 off"
   },
   {
    "ref": "AV 1",
    "name": "Chilled Water Target Temperature",
    "why": "Chilled water target, 35-75 °F"
   },
   {
    "ref": "AV 33",
    "name": "Reset Unit Lockout { 1 = Reset }",
    "why": "Write 1 to reset a unit lockout"
   },
   {
    "ref": "MI 1",
    "name": "Operating Status",
    "why": "Current unit mode"
   },
   {
    "ref": "AI 2",
    "name": "Chilled Water In Temperature",
    "why": "Entering chilled water temperature"
   },
   {
    "ref": "AI 3",
    "name": "Chilled Water Out Temperature",
    "why": "Leaving chilled water temperature"
   },
   {
    "ref": "BI 2",
    "name": "Proof of Water Flow",
    "why": "Water flow switch made"
   },
   {
    "ref": "BI 6",
    "name": "Active System Alarm Status",
    "why": "Active system alarm"
   }
  ],
  "enable": "AV 34 Auto/Run/Off Command (0 = Auto, 1 = Run, 2 = Off) runs the chiller from the BAS; BI 1 shows the Run/Stop input. AV 33 resets a unit lockout.",
  "heartbeat": null,
  "remote_sensors": null,
  "setup": [
   "MAC address, device ID (up to seven digits) and MS/TP baud rate are set on the controller's LCD BACnet screens."
  ],
  "gotchas": [
   "AV 35-39 switch the EVAP drain valve and main board relays 5-8 on or off directly."
  ]
 },
 "points": [
  {
   "type": "AI",
   "instance": 1,
   "name": "Application Version",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 2,
   "name": "Chilled Water In Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 3,
   "name": "Chilled Water Out Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 4,
   "name": "Chilled Water Out Setpoint",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 5,
   "name": "Outdoor Air Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 6,
   "name": "Vestibule Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 7,
   "name": "WSE Outlet Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 8,
   "name": "WSE Valve Outlet Mixed Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 9,
   "name": "WSE Primary 3-Way Valve",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 10,
   "name": "WSE VFD Speed",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 11,
   "name": "EVAP Sump Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 12,
   "name": "EVAP Pump Amps",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 13,
   "name": "Superheat Setpoint",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 14,
   "name": "Head Pressure Setpoint",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 15,
   "name": "A-Suction Pressure",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 16,
   "name": "A-Discharge Pressure",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 17,
   "name": "A-Liquid Line Pressure",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 18,
   "name": "A-Calculated Saturation Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 19,
   "name": "A-Calculated Discharge Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 20,
   "name": "A-Calculated Liquid Line Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 21,
   "name": "A-Suction Line Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 22,
   "name": "A-Discharge Line Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 23,
   "name": "A-Liquid Line Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 24,
   "name": "A-Superheat Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 25,
   "name": "A-Discharge Superheat Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 26,
   "name": "A-Sub-Cooling Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 27,
   "name": "A-Compressor A1 Percentage",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 28,
   "name": "A-Compressor A2 Percentage",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 29,
   "name": "A-Condenser Percentage",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 30,
   "name": "A-EXV Position",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 31,
   "name": "A-Compressor A1 Current",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 32,
   "name": "A-Compressor A2 Current",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 33,
   "name": "A-Condenser A1 Current",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 34,
   "name": "A-Condenser A2 Current",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 35,
   "name": "B-Suction Pressure",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 36,
   "name": "B-Discharge Pressure",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 37,
   "name": "B-Liquid Line Pressure",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 38,
   "name": "B-Calculated Saturation Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 39,
   "name": "B-Calculated Discharge Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 40,
   "name": "B-Calculated Liquid Line Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 41,
   "name": "B-Suction Line Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 42,
   "name": "B-Discharge Line Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 43,
   "name": "B-Liquid Line Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 44,
   "name": "B-Superheat Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 45,
   "name": "B-Discharge Superheat Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 46,
   "name": "B-Sub-Cooling Temperature",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 47,
   "name": "B-Compressor B1 Percentage",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 48,
   "name": "B-Compressor B2 Percentage",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 49,
   "name": "B-Condenser Percentage",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 50,
   "name": "B-EXV Position",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 51,
   "name": "B-Compressor B1 Current",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 52,
   "name": "B-Compressor B2 Current",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 53,
   "name": "B-Condenser B1 Current",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 54,
   "name": "B-Condenser B2 Current",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1,
   "name": "Chilled Water Target Temperature",
   "description": "Range 35° to 75°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2,
   "name": "Low Chilled Water Out Cutoff Temp",
   "description": "Range 25° to 45°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 3,
   "name": "Ambient Temperature Lockout",
   "description": "Range -30° to 40°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 4,
   "name": "High Coil Setpoint Reset Limit",
   "description": "Range 35° to 60°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 5,
   "name": "Low Coil Setpoint Reset Limit",
   "description": "Range 35° to 60°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 6,
   "name": "Vestibule Cooling Setpoint",
   "description": "Range 30° to 90°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 7,
   "name": "Vestibule Cooling Setpoint Deadband",
   "description": "Range 0.1° to 10°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 8,
   "name": "Superheat Setpoint",
   "description": "Range 1° to 30°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 9,
   "name": "Compressor Stage Above Window",
   "description": "Range 1° to 30°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 10,
   "name": "Compressor Stage Below Window",
   "description": "Range 1° to 30°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 11,
   "name": "Inlet Water Sensor Calibration Offset",
   "description": "Range -100° to 100°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 12,
   "name": "Outlet Water Sensor Calibration Offset",
   "description": "Range -100° to 100°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 13,
   "name": "Outdoor Air Sensor Calibration Offset",
   "description": "Range -100° to 100°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 14,
   "name": "Vestibule Sensor Calibration Offset",
   "description": "Range -100° to 100°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 15,
   "name": "Head Pressure Setpoint",
   "description": "Range 150 PSI to 475 PSI",
   "units": "psi",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 16,
   "name": "High Outlet Water Temp Failure Time",
   "description": "Range 5 Sec to 60 Sec",
   "units": "s",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 17,
   "name": "Sump Heater Enable Setpoint",
   "description": "Range 38° to 80°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 18,
   "name": "Sump Heater Setpoint Deadband",
   "description": "Range 1° to 10°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 19,
   "name": "EVAP Maximum Rated Amps",
   "description": "Range 0 Amps to 100 Amps",
   "units": "A",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 20,
   "name": "EVAP Discharge Control Stage Above",
   "description": "Range 0° to 200°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 21,
   "name": "EVAP Discharge Control Stage Below",
   "description": "Range 0° to 200°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 22,
   "name": "1st Stage Pump/Evap Ambient Enable SP",
   "description": "Range 35° to 110°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 23,
   "name": "Waterside Economizer Enable Deadband",
   "description": "Range 0° to 75°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 24,
   "name": "WSE Freeze Protection Setpoint",
   "description": "Range 0° to 75°",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 25,
   "name": "WSE Fan Staging Delay",
   "description": "Range 0 Sec to 300 Sec",
   "units": "s",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 26,
   "name": "WSE Startup Delay",
   "description": "Range 0 Sec to 300 Sec",
   "units": "s",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 27,
   "name": "WSE Minimum VFD Speed",
   "description": "Range 10% to 50%",
   "units": "%",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 28,
   "name": "WSE Minimum Mixing Valve",
   "description": "Range 0% to 95%",
   "units": "%",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 29,
   "name": "WSE Primary 3-Way Valve Slow Start",
   "description": "Range 1 Min to 60 Min",
   "units": "min",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 30,
   "name": "WSE Primary 3-Way Valve Slow Stop",
   "description": "Range 1 Min to 60 Min",
   "units": "min",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 31,
   "name": "WSE Reset Alarm History { 1 = Reset }",
   "description": "",
   "units": "",
   "access": "W",
   "states": "0=Log, 1=Reset"
  },
  {
   "type": "AV",
   "instance": 32,
   "name": "Compressor Modulation Rate",
   "description": "Range 1 Sec to 60 Sec",
   "units": "s",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 33,
   "name": "Reset Unit Lockout { 1 = Reset }",
   "description": "",
   "units": "",
   "access": "W",
   "states": "0=Run, 1=Reset"
  },
  {
   "type": "AV",
   "instance": 34,
   "name": "Auto/Run/Off Command",
   "description": "",
   "units": "",
   "access": "W",
   "states": "0=Auto, 1=Run, 2=Off"
  },
  {
   "type": "AV",
   "instance": 35,
   "name": "Enable/Disable EVAP Drain Valve",
   "description": "",
   "units": "",
   "access": "W",
   "states": "0=Off, 1=On"
  },
  {
   "type": "AV",
   "instance": 36,
   "name": "Enable/Disable Main Relay #5",
   "description": "",
   "units": "",
   "access": "W",
   "states": "0=Off, 1=On"
  },
  {
   "type": "AV",
   "instance": 37,
   "name": "Enable/Disable Main Relay #6",
   "description": "",
   "units": "",
   "access": "W",
   "states": "0=Off, 1=On"
  },
  {
   "type": "AV",
   "instance": 38,
   "name": "Enable/Disable Main Relay #7",
   "description": "",
   "units": "",
   "access": "W",
   "states": "0=Off, 1=On"
  },
  {
   "type": "AV",
   "instance": 39,
   "name": "Enable/Disable Main Relay #8",
   "description": "",
   "units": "",
   "access": "W",
   "states": "0=Off, 1=On"
  },
  {
   "type": "BI",
   "instance": 1,
   "name": "Run/Stop Input Command",
   "description": "Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 2,
   "name": "Proof of Water Flow",
   "description": "Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 3,
   "name": "Phase Loss",
   "description": "Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 4,
   "name": "WSE Fan Run Status",
   "description": "Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 5,
   "name": "WSE at Maximum Capacity",
   "description": "Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 6,
   "name": "Active System Alarm Status",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 7,
   "name": "WSE Alarm Not Operating",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 8,
   "name": "WSE Alarm Freeze Protection",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 9,
   "name": "WSE Alarm Valve Outlet Mixed Sensor",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 10,
   "name": "WSE Alarm Outlet Sensor",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 11,
   "name": "WSE Alarm Heat Exchange Inlet",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 12,
   "name": "WSE Alarm Heat Exchange Outlet",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 13,
   "name": "WSE Alarm VFD Fault",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 14,
   "name": "EVAP Low Sump Input Status",
   "description": "Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 15,
   "name": "EVAP Pump Pressure Status",
   "description": "Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 16,
   "name": "EVAP Condenser Pump",
   "description": "Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 17,
   "name": "EVAP Sump Heater",
   "description": "Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 18,
   "name": "EVAP Drain Valve",
   "description": "Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 19,
   "name": "EVAP Alarm Low Sump Level",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 20,
   "name": "EVAP Alarm Low Sump Temperature",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 21,
   "name": "EVAP Alarm No Pump Pressure Signal",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 22,
   "name": "EVAP Alarm Pump VFD Fault",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 23,
   "name": "EVAP Alarm Sump Temp Sensor",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 24,
   "name": "EVAP Alarm Condenser Lockout",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 25,
   "name": "EVAP Alarm Pump Low Current",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 26,
   "name": "EVAP Alarm Pump High Current",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 27,
   "name": "A-Fault Low Suction",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 28,
   "name": "A-Fault Unsafe Suction",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 29,
   "name": "A-Fault Trip High Discharge Pr.",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 30,
   "name": "A-Fault Compressor A1 Not Running",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 31,
   "name": "A-Fault Compressor A2 Not Running",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 32,
   "name": "A-Fault No Suction Line Temp Sensor",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 33,
   "name": "A-Fault Low Superheat",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 34,
   "name": "A-Fault High Discharge Temp",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 35,
   "name": "A-Fault Compressor A1 False Active",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 36,
   "name": "A-Fault Compressor A2 False Active",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 37,
   "name": "A-Fault No Suction Pr. Sensor",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 38,
   "name": "A-Fault Emergency Shutdown",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 39,
   "name": "A-Fault MODBUS Slave Timeout",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 40,
   "name": "A-Warning Low Suction Pressure",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 41,
   "name": "A-Warning Low Suction Pr. Startup",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 42,
   "name": "A-Warning High Discharge Pr.",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 43,
   "name": "A-Warning No Discharge Pr. Sensor",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 44,
   "name": "A-Warning No Discharge Temp Sensor",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 45,
   "name": "A-Warning No Liquid Line Pr. Sensor",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 46,
   "name": "A-Warning No Liquid Line Temp Sensor",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 47,
   "name": "A-Warning High Superheat",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 48,
   "name": "A-Warning Condenser Fault",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 49,
   "name": "A-Warning Condenser A1 Over Current",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 50,
   "name": "A-Warning Condenser A2 Over Current",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 51,
   "name": "A-Lockout Suction Pressure",
   "description": "Lockout",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 52,
   "name": "A-Lockout Compressor A1",
   "description": "Lockout",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 53,
   "name": "A-Lockout Compressor A2",
   "description": "Lockout",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 54,
   "name": "A-Lockout Low Discharge Pressure",
   "description": "Lockout",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 55,
   "name": "A-Lockout Compressor A1 Over Current",
   "description": "Lockout",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 56,
   "name": "A-Lockout Compressor A2 Over Current",
   "description": "Lockout",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 57,
   "name": "B-Fault Low Suction",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 58,
   "name": "B-Fault Unsafe Suction",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 59,
   "name": "B-Fault Trip High Discharge Pr.",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 60,
   "name": "B-Fault Compressor B1 Not Running",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 61,
   "name": "B-Fault Compressor B2 Not Running",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 62,
   "name": "B-Fault No Suction Line Temp Sensor",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 63,
   "name": "B-Fault Low Superheat",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 64,
   "name": "B-Fault High Discharge Temp",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 65,
   "name": "B-Fault Compressor B1 False Active",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 66,
   "name": "B-Fault Compressor B2 False Active",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 67,
   "name": "B-Fault No Suction Pr. Sensor",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 68,
   "name": "B-Fault Emergency Shutdown",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 69,
   "name": "B-Fault MODBUS Slave Timeout",
   "description": "Fault",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 70,
   "name": "B-Warning Low Suction Pressure",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 71,
   "name": "B-Warning Low Suction Pr. Startup",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 72,
   "name": "B-Warning High Discharge Pr.",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 73,
   "name": "B-Warning No Discharge Pr. Sensor",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 74,
   "name": "B-Warning No Discharge Temp Sensor",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 75,
   "name": "B-Warning No Liquid Line Pr. Sensor",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 76,
   "name": "B-Warning No Liquid Line Temp Sensor",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 77,
   "name": "B-Warning High Superheat",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 78,
   "name": "B-Warning Condenser Fault",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 79,
   "name": "B-Warning Condenser B1 Over Current",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 80,
   "name": "B-Warning Condenser B2 Over Current",
   "description": "Warning",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 81,
   "name": "B-Lockout Suction Pressure",
   "description": "Lockout",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 82,
   "name": "B-Lockout Compressor B1",
   "description": "Lockout",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 83,
   "name": "B-Lockout Compressor B2",
   "description": "Lockout",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 84,
   "name": "B-Lockout Low Discharge Pressure",
   "description": "Lockout",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 85,
   "name": "B-Lockout Compressor B1 Over Current",
   "description": "Lockout",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 86,
   "name": "B-Lockout Compressor B2 Over Current",
   "description": "Lockout",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MI",
   "instance": 1,
   "name": "Operating Status",
   "description": "Current unit mode",
   "units": "",
   "access": "R",
   "states": "1=OFF_MODE, 2=RUN MODE, 3=Holiday OFF MODE, 4=Holiday RUN MODE, 5=Startup Delay, 6=Emergency Shutdown, 7=High Leaving Water"
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/aaon/dx-chiller-controller",
 "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"
}