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DX chiller controller · BACnet points list
AAON DX Chiller Controller BACnet points list
Updated 12 November 2026
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.
This page lists 180 BACnet objects for the AAON DX Chiller Controller — 39 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from AAON’s own free documentation, linked below.
- Manufacturer
- AAON
- Model
- DX Chiller Controller
- Equipment
- DX chiller controller
- Equipment type
- Chillers
- BACnet objects
- 180 (39 writable)
- Transport
- BACnet MS/TP
- Firmware
- Controller code version 1.00 and later
- Also known as
- AAON DX Chiller Controller, Main DX Chiller Controller, G054280, SS1149, AAON DX chiller BACnet
Reference only, provided as-is: verify against AAON’s current documentation and the live device before use. Not official AAON information. Terms of use.
BMS integration notes: AAON DX Chiller Controller
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 to map
The short list most integrators start with — enough to run the unit from a BMS. Map more as the job needs.
| Object | Name | Why | Access |
|---|---|---|---|
| AV 34 | Auto/Run/Off Command | Chiller command: 0 auto, 1 run, 2 off | Write |
| AV 1 | Chilled Water Target Temperature | Chilled water target, 35-75 °F | Write |
| AV 33 | Reset Unit Lockout { 1 = Reset } | Write 1 to reset a unit lockout | Write |
| MI 1 | Operating Status | Current unit mode | Read |
| AI 2 | Chilled Water In Temperature | Entering chilled water temperature | Read |
| AI 3 | Chilled Water Out Temperature | Leaving chilled water temperature | Read |
| BI 2 | Proof of Water Flow | Water flow switch made | Read |
| BI 6 | Active System Alarm Status | Active system alarm | Read |
Enable & remote start
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.
Network setup
- MAC address, device ID (up to seven digits) and MS/TP baud rate are set on the controller's LCD BACnet screens.
Watch out for
- AV 35-39 switch the EVAP drain valve and main board relays 5-8 on or off directly.
AAON DX Chiller Controller BACnet objects
Type: AI, AO, AV, BI, BO, BV, MI/MO/MV (multi-state) · Access: Read read-only, Write writable, Command writable with a priority array.
Note: the source document has no read/write column, so access here is inferred from the object type (inputs read-only, values writable). Confirm on the live controller before writing.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AI | 1 | Application Version | Read | |||
| AImin | 2 | Chilled Water In Temperature | Read | |||
| AImin | 3 | Chilled Water Out Temperature | Read | |||
| AI | 4 | Chilled Water Out Setpoint | Read | |||
| AI | 5 | Outdoor Air Temperature | Read | |||
| AI | 6 | Vestibule Temperature | Read | |||
| AI | 7 | WSE Outlet Temperature | Read | |||
| AI | 8 | WSE Valve Outlet Mixed Temperature | Read | |||
| AI | 9 | WSE Primary 3-Way Valve | Read | |||
| AI | 10 | WSE VFD Speed | Read | |||
| AI | 11 | EVAP Sump Temperature | Read | |||
| AI | 12 | EVAP Pump Amps | Read | |||
| AI | 13 | Superheat Setpoint | Read | |||
| AI | 14 | Head Pressure Setpoint | Read | |||
| AI | 15 | A-Suction Pressure | Read | |||
| AI | 16 | A-Discharge Pressure | Read | |||
| AI | 17 | A-Liquid Line Pressure | Read | |||
| AI | 18 | A-Calculated Saturation Temperature | Read | |||
| AI | 19 | A-Calculated Discharge Temperature | Read | |||
| AI | 20 | A-Calculated Liquid Line Temperature | Read | |||
| AI | 21 | A-Suction Line Temperature | Read | |||
| AI | 22 | A-Discharge Line Temperature | Read | |||
| AI | 23 | A-Liquid Line Temperature | Read | |||
| AI | 24 | A-Superheat Temperature | Read | |||
| AI | 25 | A-Discharge Superheat Temperature | Read | |||
| AI | 26 | A-Sub-Cooling Temperature | Read | |||
| AI | 27 | A-Compressor A1 Percentage | Read | |||
| AI | 28 | A-Compressor A2 Percentage | Read | |||
| AI | 29 | A-Condenser Percentage | Read | |||
| AI | 30 | A-EXV Position | Read | |||
| AI | 31 | A-Compressor A1 Current | Read | |||
| AI | 32 | A-Compressor A2 Current | Read | |||
| AI | 33 | A-Condenser A1 Current | Read | |||
| AI | 34 | A-Condenser A2 Current | Read | |||
| AI | 35 | B-Suction Pressure | Read | |||
| AI | 36 | B-Discharge Pressure | Read | |||
| AI | 37 | B-Liquid Line Pressure | Read | |||
| AI | 38 | B-Calculated Saturation Temperature | Read | |||
| AI | 39 | B-Calculated Discharge Temperature | Read | |||
| AI | 40 | B-Calculated Liquid Line Temperature | Read | |||
| AI | 41 | B-Suction Line Temperature | Read | |||
| AI | 42 | B-Discharge Line Temperature | Read | |||
| AI | 43 | B-Liquid Line Temperature | Read | |||
| AI | 44 | B-Superheat Temperature | Read | |||
| AI | 45 | B-Discharge Superheat Temperature | Read | |||
| AI | 46 | B-Sub-Cooling Temperature | Read | |||
| AI | 47 | B-Compressor B1 Percentage | Read | |||
| AI | 48 | B-Compressor B2 Percentage | Read | |||
| AI | 49 | B-Condenser Percentage | Read | |||
| AI | 50 | B-EXV Position | Read | |||
| AI | 51 | B-Compressor B1 Current | Read | |||
| AI | 52 | B-Compressor B2 Current | Read | |||
| AI | 53 | B-Condenser B1 Current | Read | |||
| AI | 54 | B-Condenser B2 Current | Read | |||
| AVmin | 1 | Chilled Water Target Temperature | Range 35° to 75° | °F | Write | |
| AV | 2 | Low Chilled Water Out Cutoff Temp | Range 25° to 45° | °F | Write | |
| AV | 3 | Ambient Temperature Lockout | Range -30° to 40° | °F | Write | |
| AV | 4 | High Coil Setpoint Reset Limit | Range 35° to 60° | °F | Write | |
| AV | 5 | Low Coil Setpoint Reset Limit | Range 35° to 60° | °F | Write | |
| AV | 6 | Vestibule Cooling Setpoint | Range 30° to 90° | °F | Write | |
| AV | 7 | Vestibule Cooling Setpoint Deadband | Range 0.1° to 10° | °F | Write | |
| AV | 8 | Superheat Setpoint | Range 1° to 30° | °F | Write | |
| AV | 9 | Compressor Stage Above Window | Range 1° to 30° | °F | Write | |
| AV | 10 | Compressor Stage Below Window | Range 1° to 30° | °F | Write | |
| AV | 11 | Inlet Water Sensor Calibration Offset | Range -100° to 100° | °F | Write | |
| AV | 12 | Outlet Water Sensor Calibration Offset | Range -100° to 100° | °F | Write | |
| AV | 13 | Outdoor Air Sensor Calibration Offset | Range -100° to 100° | °F | Write | |
| AV | 14 | Vestibule Sensor Calibration Offset | Range -100° to 100° | °F | Write | |
| AV | 15 | Head Pressure Setpoint | Range 150 PSI to 475 PSI | psi | Write | |
| AV | 16 | High Outlet Water Temp Failure Time | Range 5 Sec to 60 Sec | s | Write | |
| AV | 17 | Sump Heater Enable Setpoint | Range 38° to 80° | °F | Write | |
| AV | 18 | Sump Heater Setpoint Deadband | Range 1° to 10° | °F | Write | |
| AV | 19 | EVAP Maximum Rated Amps | Range 0 Amps to 100 Amps | A | Write | |
| AV | 20 | EVAP Discharge Control Stage Above | Range 0° to 200° | °F | Write | |
| AV | 21 | EVAP Discharge Control Stage Below | Range 0° to 200° | °F | Write | |
| AV | 22 | 1st Stage Pump/Evap Ambient Enable SP | Range 35° to 110° | °F | Write | |
| AV | 23 | Waterside Economizer Enable Deadband | Range 0° to 75° | °F | Write | |
| AV | 24 | WSE Freeze Protection Setpoint | Range 0° to 75° | °F | Write | |
| AV | 25 | WSE Fan Staging Delay | Range 0 Sec to 300 Sec | s | Write | |
| AV | 26 | WSE Startup Delay | Range 0 Sec to 300 Sec | s | Write | |
| AV | 27 | WSE Minimum VFD Speed | Range 10% to 50% | % | Write | |
| AV | 28 | WSE Minimum Mixing Valve | Range 0% to 95% | % | Write | |
| AV | 29 | WSE Primary 3-Way Valve Slow Start | Range 1 Min to 60 Min | min | Write | |
| AV | 30 | WSE Primary 3-Way Valve Slow Stop | Range 1 Min to 60 Min | min | Write | |
| AV | 31 | WSE Reset Alarm History { 1 = Reset } | Write | 0=Log, 1=Reset | ||
| AV | 32 | Compressor Modulation Rate | Range 1 Sec to 60 Sec | s | Write | |
| AVmin | 33 | Reset Unit Lockout { 1 = Reset } | Write | 0=Run, 1=Reset | ||
| AVmin | 34 | Auto/Run/Off Command | Write | 0=Auto, 1=Run, 2=Off | ||
| AV | 35 | Enable/Disable EVAP Drain Valve | Write | 0=Off, 1=On | ||
| AV | 36 | Enable/Disable Main Relay #5 | Write | 0=Off, 1=On | ||
| AV | 37 | Enable/Disable Main Relay #6 | Write | 0=Off, 1=On | ||
| AV | 38 | Enable/Disable Main Relay #7 | Write | 0=Off, 1=On | ||
| AV | 39 | Enable/Disable Main Relay #8 | Write | 0=Off, 1=On | ||
| BI | 1 | Run/Stop Input Command | Status | Read | ||
| BImin | 2 | Proof of Water Flow | Status | Read | ||
| BI | 3 | Phase Loss | Status | Read | ||
| BI | 4 | WSE Fan Run Status | Status | Read | ||
| BI | 5 | WSE at Maximum Capacity | Status | Read | ||
| BImin | 6 | Active System Alarm Status | Alarm | Read | ||
| BI | 7 | WSE Alarm Not Operating | Alarm | Read | ||
| BI | 8 | WSE Alarm Freeze Protection | Alarm | Read | ||
| BI | 9 | WSE Alarm Valve Outlet Mixed Sensor | Alarm | Read | ||
| BI | 10 | WSE Alarm Outlet Sensor | Alarm | Read | ||
| BI | 11 | WSE Alarm Heat Exchange Inlet | Alarm | Read | ||
| BI | 12 | WSE Alarm Heat Exchange Outlet | Alarm | Read | ||
| BI | 13 | WSE Alarm VFD Fault | Alarm | Read | ||
| BI | 14 | EVAP Low Sump Input Status | Status | Read | ||
| BI | 15 | EVAP Pump Pressure Status | Status | Read | ||
| BI | 16 | EVAP Condenser Pump | Status | Read | ||
| BI | 17 | EVAP Sump Heater | Status | Read | ||
| BI | 18 | EVAP Drain Valve | Status | Read | ||
| BI | 19 | EVAP Alarm Low Sump Level | Alarm | Read | ||
| BI | 20 | EVAP Alarm Low Sump Temperature | Alarm | Read | ||
| BI | 21 | EVAP Alarm No Pump Pressure Signal | Alarm | Read | ||
| BI | 22 | EVAP Alarm Pump VFD Fault | Alarm | Read | ||
| BI | 23 | EVAP Alarm Sump Temp Sensor | Alarm | Read | ||
| BI | 24 | EVAP Alarm Condenser Lockout | Alarm | Read | ||
| BI | 25 | EVAP Alarm Pump Low Current | Alarm | Read | ||
| BI | 26 | EVAP Alarm Pump High Current | Alarm | Read | ||
| BI | 27 | A-Fault Low Suction | Fault | Read | ||
| BI | 28 | A-Fault Unsafe Suction | Fault | Read | ||
| BI | 29 | A-Fault Trip High Discharge Pr. | Fault | Read | ||
| BI | 30 | A-Fault Compressor A1 Not Running | Fault | Read | ||
| BI | 31 | A-Fault Compressor A2 Not Running | Fault | Read | ||
| BI | 32 | A-Fault No Suction Line Temp Sensor | Fault | Read | ||
| BI | 33 | A-Fault Low Superheat | Fault | Read | ||
| BI | 34 | A-Fault High Discharge Temp | Fault | Read | ||
| BI | 35 | A-Fault Compressor A1 False Active | Fault | Read | ||
| BI | 36 | A-Fault Compressor A2 False Active | Fault | Read | ||
| BI | 37 | A-Fault No Suction Pr. Sensor | Fault | Read | ||
| BI | 38 | A-Fault Emergency Shutdown | Fault | Read | ||
| BI | 39 | A-Fault MODBUS Slave Timeout | Fault | Read | ||
| BI | 40 | A-Warning Low Suction Pressure | Warning | Read | ||
| BI | 41 | A-Warning Low Suction Pr. Startup | Warning | Read | ||
| BI | 42 | A-Warning High Discharge Pr. | Warning | Read | ||
| BI | 43 | A-Warning No Discharge Pr. Sensor | Warning | Read | ||
| BI | 44 | A-Warning No Discharge Temp Sensor | Warning | Read | ||
| BI | 45 | A-Warning No Liquid Line Pr. Sensor | Warning | Read | ||
| BI | 46 | A-Warning No Liquid Line Temp Sensor | Warning | Read | ||
| BI | 47 | A-Warning High Superheat | Warning | Read | ||
| BI | 48 | A-Warning Condenser Fault | Warning | Read | ||
| BI | 49 | A-Warning Condenser A1 Over Current | Warning | Read | ||
| BI | 50 | A-Warning Condenser A2 Over Current | Warning | Read | ||
| BI | 51 | A-Lockout Suction Pressure | Lockout | Read | ||
| BI | 52 | A-Lockout Compressor A1 | Lockout | Read | ||
| BI | 53 | A-Lockout Compressor A2 | Lockout | Read | ||
| BI | 54 | A-Lockout Low Discharge Pressure | Lockout | Read | ||
| BI | 55 | A-Lockout Compressor A1 Over Current | Lockout | Read | ||
| BI | 56 | A-Lockout Compressor A2 Over Current | Lockout | Read | ||
| BI | 57 | B-Fault Low Suction | Fault | Read | ||
| BI | 58 | B-Fault Unsafe Suction | Fault | Read | ||
| BI | 59 | B-Fault Trip High Discharge Pr. | Fault | Read | ||
| BI | 60 | B-Fault Compressor B1 Not Running | Fault | Read | ||
| BI | 61 | B-Fault Compressor B2 Not Running | Fault | Read | ||
| BI | 62 | B-Fault No Suction Line Temp Sensor | Fault | Read | ||
| BI | 63 | B-Fault Low Superheat | Fault | Read | ||
| BI | 64 | B-Fault High Discharge Temp | Fault | Read | ||
| BI | 65 | B-Fault Compressor B1 False Active | Fault | Read | ||
| BI | 66 | B-Fault Compressor B2 False Active | Fault | Read | ||
| BI | 67 | B-Fault No Suction Pr. Sensor | Fault | Read | ||
| BI | 68 | B-Fault Emergency Shutdown | Fault | Read | ||
| BI | 69 | B-Fault MODBUS Slave Timeout | Fault | Read | ||
| BI | 70 | B-Warning Low Suction Pressure | Warning | Read | ||
| BI | 71 | B-Warning Low Suction Pr. Startup | Warning | Read | ||
| BI | 72 | B-Warning High Discharge Pr. | Warning | Read | ||
| BI | 73 | B-Warning No Discharge Pr. Sensor | Warning | Read | ||
| BI | 74 | B-Warning No Discharge Temp Sensor | Warning | Read | ||
| BI | 75 | B-Warning No Liquid Line Pr. Sensor | Warning | Read | ||
| BI | 76 | B-Warning No Liquid Line Temp Sensor | Warning | Read | ||
| BI | 77 | B-Warning High Superheat | Warning | Read | ||
| BI | 78 | B-Warning Condenser Fault | Warning | Read | ||
| BI | 79 | B-Warning Condenser B1 Over Current | Warning | Read | ||
| BI | 80 | B-Warning Condenser B2 Over Current | Warning | Read | ||
| BI | 81 | B-Lockout Suction Pressure | Lockout | Read | ||
| BI | 82 | B-Lockout Compressor B1 | Lockout | Read | ||
| BI | 83 | B-Lockout Compressor B2 | Lockout | Read | ||
| BI | 84 | B-Lockout Low Discharge Pressure | Lockout | Read | ||
| BI | 85 | B-Lockout Compressor B1 Over Current | Lockout | Read | ||
| BI | 86 | B-Lockout Compressor B2 Over Current | Lockout | Read | ||
| MImin | 1 | Operating Status | Current unit mode | Read | 1=OFF_MODE, 2=RUN MODE, 3=Holiday OFF MODE, 4=Holiday RUN MODE, 5=Startup Delay, 6=Emergency Shutdown, 7=High Leaving Water |
No points match these filters.
Object ID lookup: AAON DX Chiller Controller point IDs by name
AI1Application VersionAI2Chilled Water In TemperatureAI3Chilled Water Out TemperatureAI4Chilled Water Out SetpointAI5Outdoor Air TemperatureAI6Vestibule TemperatureAI7WSE Outlet TemperatureAI8WSE Valve Outlet Mixed TemperatureAI9WSE Primary 3-Way ValveAI10WSE VFD SpeedAI11EVAP Sump TemperatureAI12EVAP Pump AmpsAI13Superheat SetpointAI14Head Pressure SetpointAI15A-Suction PressureAI16A-Discharge PressureAI17A-Liquid Line PressureAI18A-Calculated Saturation TemperatureAI19A-Calculated Discharge TemperatureAI20A-Calculated Liquid Line TemperatureAI21A-Suction Line TemperatureAI22A-Discharge Line TemperatureAI23A-Liquid Line TemperatureAI24A-Superheat TemperatureAI25A-Discharge Superheat TemperatureAI26A-Sub-Cooling TemperatureAI27A-Compressor A1 PercentageAI28A-Compressor A2 PercentageAI29A-Condenser PercentageAI30A-EXV PositionAI31A-Compressor A1 CurrentAI32A-Compressor A2 CurrentAI33A-Condenser A1 CurrentAI34A-Condenser A2 CurrentAI35B-Suction PressureAI36B-Discharge PressureAI37B-Liquid Line PressureAI38B-Calculated Saturation TemperatureAI39B-Calculated Discharge TemperatureAI40B-Calculated Liquid Line TemperatureAI41B-Suction Line TemperatureAI42B-Discharge Line TemperatureAI43B-Liquid Line TemperatureAI44B-Superheat TemperatureAI45B-Discharge Superheat TemperatureAI46B-Sub-Cooling TemperatureAI47B-Compressor B1 PercentageAI48B-Compressor B2 PercentageAI49B-Condenser PercentageAI50B-EXV PositionAI51B-Compressor B1 CurrentAI52B-Compressor B2 CurrentAI53B-Condenser B1 CurrentAI54B-Condenser B2 CurrentAV1Chilled Water Target TemperatureAV2Low Chilled Water Out Cutoff TempAV3Ambient Temperature LockoutAV4High Coil Setpoint Reset LimitAV5Low Coil Setpoint Reset LimitAV6Vestibule Cooling SetpointAV7Vestibule Cooling Setpoint DeadbandAV8Superheat SetpointAV9Compressor Stage Above WindowAV10Compressor Stage Below WindowAV11Inlet Water Sensor Calibration OffsetAV12Outlet Water Sensor Calibration OffsetAV13Outdoor Air Sensor Calibration OffsetAV14Vestibule Sensor Calibration OffsetAV15Head Pressure SetpointAV16High Outlet Water Temp Failure TimeAV17Sump Heater Enable SetpointAV18Sump Heater Setpoint DeadbandAV19EVAP Maximum Rated AmpsAV20EVAP Discharge Control Stage AboveAV21EVAP Discharge Control Stage BelowAV221st Stage Pump/Evap Ambient Enable SPAV23Waterside Economizer Enable DeadbandAV24WSE Freeze Protection SetpointAV25WSE Fan Staging DelayAV26WSE Startup DelayAV27WSE Minimum VFD SpeedAV28WSE Minimum Mixing ValveAV29WSE Primary 3-Way Valve Slow StartAV30WSE Primary 3-Way Valve Slow StopAV31WSE Reset Alarm History { 1 = Reset }AV32Compressor Modulation RateAV33Reset Unit Lockout { 1 = Reset }AV34Auto/Run/Off CommandAV35Enable/Disable EVAP Drain ValveAV36Enable/Disable Main Relay #5AV37Enable/Disable Main Relay #6AV38Enable/Disable Main Relay #7AV39Enable/Disable Main Relay #8BI1Run/Stop Input CommandBI2Proof of Water FlowBI3Phase LossBI4WSE Fan Run StatusBI5WSE at Maximum CapacityBI6Active System Alarm StatusBI7WSE Alarm Not OperatingBI8WSE Alarm Freeze ProtectionBI9WSE Alarm Valve Outlet Mixed SensorBI10WSE Alarm Outlet SensorBI11WSE Alarm Heat Exchange InletBI12WSE Alarm Heat Exchange OutletBI13WSE Alarm VFD FaultBI14EVAP Low Sump Input StatusBI15EVAP Pump Pressure StatusBI16EVAP Condenser PumpBI17EVAP Sump HeaterBI18EVAP Drain ValveBI19EVAP Alarm Low Sump LevelBI20EVAP Alarm Low Sump TemperatureBI21EVAP Alarm No Pump Pressure SignalBI22EVAP Alarm Pump VFD FaultBI23EVAP Alarm Sump Temp SensorBI24EVAP Alarm Condenser LockoutBI25EVAP Alarm Pump Low CurrentBI26EVAP Alarm Pump High CurrentBI27A-Fault Low SuctionBI28A-Fault Unsafe SuctionBI29A-Fault Trip High Discharge Pr.BI30A-Fault Compressor A1 Not RunningBI31A-Fault Compressor A2 Not RunningBI32A-Fault No Suction Line Temp SensorBI33A-Fault Low SuperheatBI34A-Fault High Discharge TempBI35A-Fault Compressor A1 False ActiveBI36A-Fault Compressor A2 False ActiveBI37A-Fault No Suction Pr. SensorBI38A-Fault Emergency ShutdownBI39A-Fault MODBUS Slave TimeoutBI40A-Warning Low Suction PressureBI41A-Warning Low Suction Pr. StartupBI42A-Warning High Discharge Pr.BI43A-Warning No Discharge Pr. SensorBI44A-Warning No Discharge Temp SensorBI45A-Warning No Liquid Line Pr. SensorBI46A-Warning No Liquid Line Temp SensorBI47A-Warning High SuperheatBI48A-Warning Condenser FaultBI49A-Warning Condenser A1 Over CurrentBI50A-Warning Condenser A2 Over CurrentBI51A-Lockout Suction PressureBI52A-Lockout Compressor A1BI53A-Lockout Compressor A2BI54A-Lockout Low Discharge PressureBI55A-Lockout Compressor A1 Over CurrentBI56A-Lockout Compressor A2 Over CurrentBI57B-Fault Low SuctionBI58B-Fault Unsafe SuctionBI59B-Fault Trip High Discharge Pr.BI60B-Fault Compressor B1 Not RunningBI61B-Fault Compressor B2 Not RunningBI62B-Fault No Suction Line Temp SensorBI63B-Fault Low SuperheatBI64B-Fault High Discharge TempBI65B-Fault Compressor B1 False ActiveBI66B-Fault Compressor B2 False ActiveBI67B-Fault No Suction Pr. SensorBI68B-Fault Emergency ShutdownBI69B-Fault MODBUS Slave TimeoutBI70B-Warning Low Suction PressureBI71B-Warning Low Suction Pr. StartupBI72B-Warning High Discharge Pr.BI73B-Warning No Discharge Pr. SensorBI74B-Warning No Discharge Temp SensorBI75B-Warning No Liquid Line Pr. SensorBI76B-Warning No Liquid Line Temp SensorBI77B-Warning High SuperheatBI78B-Warning Condenser FaultBI79B-Warning Condenser B1 Over CurrentBI80B-Warning Condenser B2 Over CurrentBI81B-Lockout Suction PressureBI82B-Lockout Compressor B1BI83B-Lockout Compressor B2BI84B-Lockout Low Discharge PressureBI85B-Lockout Compressor B1 Over CurrentBI86B-Lockout Compressor B2 Over CurrentMI1Operating Status
Integration 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.
Check it against the live device. A points list tells you what the controller can expose; the unit in front of you may differ by firmware or installed options. This list is provided as-is for reference only and may contain mistakes — confirming it before you write, map or commission anything is up to you (terms). Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the DX Chiller Controller and exports what it actually has to Excel — free. New to BACnet? Start with what a BACnet points list is and what the object types mean.
Questions about the AAON DX Chiller Controller
How many BACnet points does the AAON DX Chiller Controller have?
This list has 180 BACnet objects: 54 analog inputs, 39 analog values, 86 binary inputs, 1 multi-state input. The exact set on a given unit depends on its firmware, installed options and configuration.
Which AAON DX Chiller Controller BACnet points are writable?
39 of the 180 objects accept a write. Points marked Command have a priority array: a write holds until it is released, so release it back to automatic when you are done. The source has no read/write column, so this is inferred from object type.
Where is the official AAON DX Chiller Controller BACnet documentation?
The source is DX Chiller Controller Technical Guide (G054280 Rev. 01B), revision 2020-02, published free by AAON at https://www.aaon.com/hubfs/Controls%20Literature/G054280-DXCHILLER-01B-200203.pdf.
What are the minimum BACnet points to integrate the AAON DX Chiller Controller?
Start with AV 34 Auto/Run/Off Command (Chiller command: 0 auto, 1 run, 2 off); AV 1 Chilled Water Target Temperature (Chilled water target, 35-75 °F); AV 33 Reset Unit Lockout { 1 = Reset } (Write 1 to reset a unit lockout); MI 1 Operating Status (Current unit mode); AI 2 Chilled Water In Temperature (Entering chilled water temperature); AI 3 Chilled Water Out Temperature (Leaving chilled water temperature); BI 2 Proof of Water Flow (Water flow switch made); BI 6 Active System Alarm Status (Active system alarm).
How do I enable BMS control of the AAON DX Chiller Controller?
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.
How do I check these points on the real DX Chiller Controller?
Scan the network with a BACnet IP browser such as Easy BACnet, open the device and compare its object list with this table. Anything missing is usually an option that isn't installed or a point that is disabled in the controller's configuration.
More AAON BACnet points lists
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AAON Touchscreen Controller
AAON packaged units fitted with the AAON Touchscreen unit controller.
Also known as: AAON Touchscreen, Touch Screen Controller, AAON TS controller - Rooftop unit controller (zoning)
AAON Auto-Zone 3 (AZ 3) Controller
AAON packaged units run by the Auto-Zone 3 controller, alone or with AZ 3 VAV/zone dampers.
Also known as: AZ 3, AZ3, Auto-Zone 3, AAON AZ3, G071000, SS8014, SS8015, Orion AZ3 - General-purpose BACnet I/O controller
AAON BACnet General Controller (BGC)
AAON BGC general-purpose controller with 8 analog inputs, 8 binary inputs, 8 relays and 4 analog outputs.
Also known as: AAON BGC, BGC Controller, AAON BACnet General Controller, G042460, AAON general purpose I/O controller - DX chiller controller
AAON LF Chiller Controller
AAON LF series one- or two-circuit DX chillers with the LF Chiller Main Controller, optional pumping package and waterside economizer.
Also known as: AAON LF Chiller, LF Chiller Main Controller, G059100, SS1131, DT005683-001, LF chiller BACnet - DX chiller controller
AAON Main DX Barrel Chiller Controller
AAON DX barrel chillers with the Main DX Barrel Chiller Controller, up to two barrels and three refrigerant circuits per barrel, with optional pumping, WSE, evaporative condenser and vestibule modules.
Also known as: AAON DX Barrel Chiller, Main DX Barrel Chiller Controller, G070300, SS1140, DX barrel chiller BACnet - Air handler preheat controller
AAON PREHEAT-X Controller
AAON PREHEAT-X controllers that stage and modulate electric (SCR/SSR) preheat on AAON units and air handlers.
Also known as: PREHEAT-X, PREHEATX, Preheat-X, G086640, AAON preheat controller, Orion PREHEAT-X - Rooftop unit / air handler controller (gateway)
AAON SA Controller (via PT-Link II BACnet gateway)
AAON units with the SA (single-zone) controller, reached through the AAON PT-Link II BACnet MS/TP gateway.
Also known as: SA controller, AAON SA, PT-Link II, PT-Link BACnet5, G114680 - Rooftop unit / air handler controller
AAON Stratus Unit Manager (Stratus controls)
AAON units built with Stratus controls (Stratus Unit Manager, software 1.3.3).
Also known as: Stratus, AAON Stratus, Stratus Unit Manager, Stratus BACnet Points Guide, Stratus controller, Stratus Series - VAV / zone controller
AAON VAV/Zone BACnet Controller (VAVZB)
Pressure-independent and pressure-dependent VAV boxes and zone dampers controlled by the AAON VAV/Zone BACnet controller.
Also known as: VAVZB, VAV/Zone Controller, ASM02426, ASM02427, ASM02661, ASM02662, SS1116, SS1146, G067750 - Rooftop unit / air handler controller
AAON VCB-X Controller
AAON packaged rooftop units, air handlers, DOAS and water-source units controlled by the Orion VCB-X (OE335-26B-VCBX) unit controller.
Also known as: VCBX, VCB-X, Orion VCB-X, OE335-26B-VCBX, V28940, WattMaster VCB-X, AAON VCB-X BACnet - Rooftop unit / air handler controller
AAON VCCX-454 Controller
AAON rooftop units, air handlers, DOAS and self-contained units built for R-454B and controlled by the VCCX-454 unit controller with RM454 refrigerant modules.
Also known as: VCCX-454, VCCX 454, ASM07503, SS1188, AAON VCCX-454 controller, R-454B unit controller - Rooftop unit / air handler controller
AAON VCCX-454-GH Controller (grow house)
AAON R-454B units for indoor agriculture (grow rooms) controlled by the VCCX-454-GH controller.
Also known as: VCCX-454-GH, VCCX454-GH, ASM07792, SS1207, AAON grow house controller, indoor agriculture HVAC controller - Rooftop unit / air handler controller
AAON VCCX2 Controller
AAON rooftop units, air handlers and DOAS units controlled by the VCCX2 (ASM01698) unit controller.
Also known as: VCC-X2, VCCX, VCC-X, ASM01698, Orion VCCX2, SS1088 - Rooftop unit / air handler controller (gateway)
AAON VCM Controller (legacy, via PT-Link II BACnet gateway)
Older AAON units with the legacy VCM controller, reached through the AAON PT-Link II BACnet MS/TP gateway.
Also known as: VCM, AAON VCM, PT-Link II, PT-Link BACnet5, G114680 - Rooftop unit / air handler controller (gateway)
AAON VCM-X Controller (via PT-Link II BACnet gateway)
AAON rooftop units, air handlers and other equipment with the VCM-X controller, reached through the AAON PT-Link II BACnet MS/TP gateway.
Also known as: VCM-X, VCMX, PT-Link II, PT-Link BACnet5, G114680
Source: DX Chiller Controller Technical Guide · G054280 Rev. 01B · rev. 2020-02. Object names, instances and units are reproduced as published; descriptions are our own.