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DX chiller controller · BACnet points list
AAON LF Chiller Controller BACnet points list
Updated 12 November 2026
The LF Chiller Main Controller runs one- or two-circuit AAON DX chillers, with optional pumping and waterside economizer, and has an on-board BACnet MS/TP port. The object map has 52 read-only analog inputs, 34 analog values (setpoints, reset limits, run command and relay enables), 112 read-only binary inputs for status, faults, warnings and lockouts, and a multistate input for the unit mode.
This page lists 199 BACnet objects for the AAON LF Chiller Controller — 34 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
- LF Chiller Controller
- Equipment
- DX chiller controller
- Equipment type
- Chillers
- BACnet objects
- 199 (34 writable)
- Transport
- BACnet MS/TP
- Firmware
- DT005683-001/SS1131 v1.00 and later
- Also known as
- AAON LF Chiller, LF Chiller Main Controller, G059100, SS1131, DT005683-001, LF 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 LF Chiller Controller
Connect the on-board MS/TP port and set MAC address, device ID and baud on the LCD. The BAS runs the chiller with AV 31 Auto/Run/Off; AV 1-4 set the leaving water setpoint range and its reset signal limits, and AI 4 shows the setpoint in use. Monitor the operating status MI, leaving water temperature and the fault BIs.
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 31 | Auto/Run/Off Command | Chiller command: 0 auto, 1 run, 2 off | Write |
| AV 30 | Reset Unit Lockout {1 = Reset } | Write 1 to reset a unit lockout | Write |
| MI 1 | Operating Status | Current unit mode | Read |
| AI 4 | Active Leaving Water Setpoint | Leaving water setpoint in use | Read |
| AI 2 | Entering Water Temperature | Entering water temperature | Read |
| AI 3 | Leaving Water Temperature | Leaving water temperature | Read |
| BI 2 | Proof of Water Flow | Water flow switch made | Read |
| BI 3 | Emergency Shutdown | Emergency shutdown input | Read |
Enable & remote start
AV 31 Auto/Run/Off Command (0 = Auto, 1 = Run, 2 = Off) runs the chiller from the BAS; BI 1 shows the Run/Stop input. AV 30 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
- There is no single leaving water setpoint AV; AV 1-4 set the max/min temperatures and the reset voltages that map to them.
AAON LF 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 | Entering Water Temperature | Read | |||
| AImin | 3 | Leaving Water Temperature | Read | |||
| AImin | 4 | Active Leaving Water Setpoint | Read | |||
| AI | 5 | Outdoor Air Temperature | Read | |||
| AI | 6 | WSE Primary Feed Temperature | Read | |||
| AI | 7 | WSE Primary Outlet Temperature | Read | |||
| AI | 8 | WSE Primary 3-Way Valve | Read | |||
| AI | 9 | WSE VFD Speed | Read | |||
| AI | 10 | Pump Discharge Pressure | Read | |||
| AI | 11 | Pump Suction Pressure | Read | |||
| AI | 12 | Pump Differential Pressure | Read | |||
| AI | 13 | Pump VFD Speed | Read | |||
| AI | 14 | Active Superheat Setpoint | Read | |||
| AI | 15 | Active Head Pressure Setpoint | Read | |||
| AI | 16 | Active Coil Temperature Setpoint | Read | |||
| AI | 17 | A-Suction Pressure | Read | |||
| AI | 18 | A-Discharge Pressure | Read | |||
| AI | 19 | A-Liquid Line Pressure | Read | |||
| AI | 20 | A-Calculated Saturation Temperature | Read | |||
| AI | 21 | A-Calculated Discharge Temperature | Read | |||
| AI | 22 | A-Calculated Liquid Line Temperature | Read | |||
| AI | 23 | A-Suction Line Temperature | Read | |||
| AI | 24 | A-Discharge Line Temperature | Read | |||
| AI | 25 | A-Liquid Line Temperature | Read | |||
| AI | 26 | A-Superheat Temperature | Read | |||
| AI | 27 | A-Discharge Superheat Temperature | Read | |||
| AI | 28 | A-Sub-cooling Temperature | Read | |||
| AI | 29 | A-Compressor A1 Percentage | Read | |||
| AI | 30 | A-Compressor A2 Percentage | Read | |||
| AI | 31 | A-Condenser Percentage | Read | |||
| AI | 32 | A-EXV Position | Read | |||
| AI | 33 | A-Compressor A1 Current | Read | |||
| AI | 34 | A-Compressor 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 | |||
| AV | 1 | Leaving Water SP Max Reset Volts | Range 0 to 10 | Write | ||
| AV | 2 | Leaving Water Max Temp Setpoint | Range 35 to 60 | Write | ||
| AV | 3 | Leaving Water SP Min Reset Volts | Range 0 to 10 | Write | ||
| AV | 4 | Leaving Water Min Temp Setpoint | Range 12 to 60 | Write | ||
| AV | 5 | Low Chilled Water Out Cutoff Temp | Range 0 to 45 | Write | ||
| AV | 6 | Ambient Temperature Lockout | Range -20 to 40 | Write | ||
| AV | 7 | High Coil Setpoint Reset Limit | Range 35 to 60 | Write | ||
| AV | 8 | Low Coil Setpoint Reset Limit | Range 35 to 60 | Write | ||
| AV | 9 | Superheat Setpoint | Range 10 to 30 | Write | ||
| AV | 10 | Compressor Stage Above Window | Range 1 to 30 | Write | ||
| AV | 11 | Compressor Stage Below Window | Range 1 to 30 | Write | ||
| AV | 12 | Entering Water Sensor Calibration | Range -100 to 100 | Write | ||
| AV | 13 | Leaving Water Sensor Calibration | Range -100 to 100 | Write | ||
| AV | 14 | Outdoor Air Sensor Calibration | Range -100 to 100 | Write | ||
| AV | 15 | Head Pressure Setpoint | Range 150 to 475 | Write | ||
| AV | 16 | High Outlet Water Temp Failure Time | Range 5 to 600 | Write | ||
| AV | 17 | Waterside Economizer Enable Setpoint | Range 0 to 75 | Write | ||
| AV | 18 | WSE Primary Outlet Setpoint | Range 0 to 75 | Write | ||
| AV | 19 | WSE Heat Exchange Outlet Setpoint | Range 0 to 75 | Write | ||
| AV | 20 | WSE Freeze Protection Setpoint | Range 0 to 75 | Write | ||
| AV | 21 | WSE Heat Exchange Inlet Setpoint | Range 0 to 75 | Write | ||
| AV | 22 | WSE Fan Staging Delay | Range 0 to 300 | Write | ||
| AV | 23 | WSE Startup Delay | Range 0 to 300 | Write | ||
| AV | 24 | WSE Minimum VFD Speed | Range 10 to 50 | Write | ||
| AV | 25 | WSE Minimum Mixing Valve | Range 0 to 95 | Write | ||
| AV | 26 | WSE Primary 3-Way Valve Slow Start | Range 1 to 60 | Write | ||
| AV | 27 | WSE Primary 3-Way Valve Slow Stop | Range 1 to 60 | Write | ||
| AV | 28 | WSE Reset Alarm History {1 = Reset } | Write | 1=Reset | ||
| AV | 29 | Compressor Modulation Rate | Range 1 to 60 | Write | ||
| AVmin | 30 | Reset Unit Lockout {1 = Reset } | Write | 1=Reset | ||
| AVmin | 31 | Auto/Run/Off Command | Write | 0=Auto, 1=Run, 2=Off | ||
| AV | 32 | Enable/Disable Main Relay #6 | Write | 0=Off, 1=On | ||
| AV | 33 | Enable/Disable Main Relay #7 | Write | 0=Off, 1=On | ||
| AV | 34 | 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 | ||
| BImin | 3 | Emergency Shutdown | Status | Read | ||
| BI | 4 | Phase Loss | Status | Read | ||
| BI | 5 | WSE Fan Run Status | Status | Read | ||
| BI | 6 | WSE at Maximum Capacity | Status | Read | ||
| BI | 7 | WSE Enable Status | Status | Read | ||
| BI | 8 | WSE Alarm Not Operating | Alarm | Read | ||
| BI | 9 | WSE Alarm Freeze Protection | Alarm | Read | ||
| BI | 10 | WSE Alarm Primary Outlet Sensor | Alarm | Read | ||
| BI | 11 | WSE Alarm Primary Feed Sensor | Alarm | Read | ||
| BI | 12 | WSE Alarm Heat Exchange Inlet | Alarm | Read | ||
| BI | 13 | WSE Alarm Heat Exchange Outlet | Alarm | Read | ||
| BI | 14 | WSE Alarm VFD Fault | Alarm | Read | ||
| BI | 15 | Primary A Pump 1 Status | Status | Read | ||
| BI | 16 | Primary A Pump 2 Status | Status | Read | ||
| BI | 17 | Pump Water Flow Status | Status | Read | ||
| BI | 18 | For Future Use | Read | |||
| BI | 19 | For Future Use | Read | |||
| BI | 20 | A-Fault Low Suction | Fault | Read | ||
| BI | 21 | A-Fault Unsafe Suction | Fault | Read | ||
| BI | 22 | A-Fault Trip High Discharge Pr. | Fault | Read | ||
| BI | 23 | A-Fault Compressor A1 Not Running | Fault | Read | ||
| BI | 24 | A-Fault Compressor A2 Not Running | Fault | Read | ||
| BI | 25 | A-Fault No Suction Line Temp Sensor | Fault | Read | ||
| BI | 26 | A-Fault Low Superheat | Fault | Read | ||
| BI | 27 | A-Fault High Discharge Temp | Fault | Read | ||
| BI | 28 | A-Fault Compressor A1 False Active | Fault | Read | ||
| BI | 29 | A-Fault Compressor A2 False Active | Fault | Read | ||
| BI | 30 | A-Fault No Suction Pr. Sensor | Fault | Read | ||
| BI | 31 | A-Fault Emergency Shutdown | Fault | Read | ||
| BI | 32 | A-Fault MODBUS Slave Timeout | Fault | Read | ||
| BI | 33 | A-Fault High Superheat | Fault | Read | ||
| BI | 34 | A-Fault High Saturation Temperature | Fault | Read | ||
| BI | 35 | A-Fault Compressor A1 Over Current | Fault | Read | ||
| BI | 36 | A-Fault Compressor A2 Over Current | Fault | Read | ||
| BI | 37 | A-Fault Compressor A1 Under Current | Fault | Read | ||
| BI | 38 | A-Fault Compressor A2 Under Current | Fault | Read | ||
| BI | 39 | For Future Use | 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 Pressure 1 | 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 High Superheat | Warning | Read | ||
| BI | 46 | A-Warning Condenser Fault | Warning | Read | ||
| BI | 47 | A-Warning Condenser Over Current | Warning | Read | ||
| BI | 48 | A-Warning No Liquid Line Pr. Sensor | Warning | Read | ||
| BI | 49 | A-Warning No Liquid Line Temp Sensor | Warning | Read | ||
| BI | 50 | A-Warning High Discharge Pressure 2 | Warning | Read | ||
| BI | 51 | A-Lockout Suction Pressure | Lockout | Read | ||
| BI | 52 | A-Lockout Low Discharge Pressure | Lockout | Read | ||
| BI | 53 | A-Lockout Compressor A1 Over Current | Lockout | Read | ||
| BI | 54 | A-Lockout Compressor A2 Over Current | Lockout | Read | ||
| BI | 55 | A-Lockout High Discharge Temp | Lockout | Read | ||
| BI | 56 | A-Lockout High Discharge Pressure | Lockout | Read | ||
| BI | 57 | A-Lockout Low Superheat | Lockout | Read | ||
| BI | 58 | A-Lockout High Superheat | Lockout | Read | ||
| BI | 59 | A-Lockout High Saturation Temp | Lockout | Read | ||
| BI | 60 | A-Lockout Compressor A1 Under Current | Lockout | Read | ||
| BI | 61 | A-Lockout Compressor A2 Under Current | Lockout | Read | ||
| BI | 62 | For Future Use | Read | |||
| BI | 63 | For Future Use | Read | |||
| BI | 64 | For Future Use | Read | |||
| BI | 65 | For Future Use | Read | |||
| BI | 66 | For Future Use | Read | |||
| BI | 67 | For Future Use | Read | |||
| BI | 68 | For Future Use | Read | |||
| BI | 69 | For Future Use | Read | |||
| BI | 70 | B-Fault Low Suction | Fault | Read | ||
| BI | 71 | B-Fault Unsafe Suction | Fault | Read | ||
| BI | 72 | B-Fault Trip High Discharge Pr. | Fault | Read | ||
| BI | 73 | B-Fault Compressor B1 Not Running | Fault | Read | ||
| BI | 74 | B-Fault Compressor B2 Not Running | Fault | Read | ||
| BI | 75 | B-Fault No Suction Line Temp Sensor | Fault | Read | ||
| BI | 76 | B-Fault Low Superheat | Fault | Read | ||
| BI | 77 | B-Fault High Discharge Temp | Fault | Read | ||
| BI | 78 | B-Fault Compressor B1 False Active | Fault | Read | ||
| BI | 79 | B-Fault Compressor B2 False Active | Fault | Read | ||
| BI | 80 | B-Fault No Suction Pr. Sensor | Fault | Read | ||
| BI | 81 | B-Fault Emergency Shutdown | Fault | Read | ||
| BI | 82 | B-Fault MODBUS Slave Timeout | Fault | Read | ||
| BI | 83 | B-Fault High Superheat | Fault | Read | ||
| BI | 84 | B-Fault High Saturation Temperature | Fault | Read | ||
| BI | 85 | B-Fault Compressor B1 Over Current | Fault | Read | ||
| BI | 86 | B-Fault Compressor B2 Over Current | Fault | Read | ||
| BI | 87 | B-Fault Compressor B1 Under Current | Fault | Read | ||
| BI | 88 | B-Fault Compressor B2 Under Current | Fault | Read | ||
| BI | 89 | For Future Use | Read | |||
| BI | 90 | B-Warning Low Suction Pressure | Warning | Read | ||
| BI | 91 | B-Warning Low Suction Pr. Startup | Warning | Read | ||
| BI | 92 | B-Warning High Discharge Pressure 1 | Warning | Read | ||
| BI | 93 | B-Warning No Discharge Pr. Sensor | Warning | Read | ||
| BI | 94 | B-Warning No Discharge Temp Sensor | Warning | Read | ||
| BI | 95 | B-Warning High Superheat | Warning | Read | ||
| BI | 96 | B-Warning Condenser Fault | Warning | Read | ||
| BI | 97 | B-Warning Condenser Over Current | Warning | Read | ||
| BI | 98 | B-Warning No Liquid Line Pr. Sensor | Warning | Read | ||
| BI | 99 | B-Warning No Liquid Line Temp Sensor | Warning | Read | ||
| BI | 100 | B-Warning High Discharge Pressure 2 | Warning | Read | ||
| BI | 101 | B-Lockout Suction Pressure | Lockout | Read | ||
| BI | 102 | B-Lockout Low Discharge Pressure | Lockout | Read | ||
| BI | 103 | B-Lockout Compressor B1 Over Current | Lockout | Read | ||
| BI | 104 | B-Lockout Compressor B2 Over Current | Lockout | Read | ||
| BI | 105 | B-Lockout High Discharge Temp | Lockout | Read | ||
| BI | 106 | B-Lockout High Discharge Pressure | Lockout | Read | ||
| BI | 107 | B-Lockout Low Superheat | Lockout | Read | ||
| BI | 108 | B-Lockout High Superheat | Lockout | Read | ||
| BI | 109 | B-Lockout High Saturation Temp | Lockout | Read | ||
| BI | 110 | B-Lockout Compressor B1 Under Current | Lockout | Read | ||
| BI | 111 | B-Lockout Compressor B2 Under Current | Lockout | Read | ||
| BI | 112 | Chiller Fully Loaded | Status | 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 LF Chiller Controller point IDs by name
AI1Application VersionAI2Entering Water TemperatureAI3Leaving Water TemperatureAI4Active Leaving Water SetpointAI5Outdoor Air TemperatureAI6WSE Primary Feed TemperatureAI7WSE Primary Outlet TemperatureAI8WSE Primary 3-Way ValveAI9WSE VFD SpeedAI10Pump Discharge PressureAI11Pump Suction PressureAI12Pump Differential PressureAI13Pump VFD SpeedAI14Active Superheat SetpointAI15Active Head Pressure SetpointAI16Active Coil Temperature SetpointAI17A-Suction PressureAI18A-Discharge PressureAI19A-Liquid Line PressureAI20A-Calculated Saturation TemperatureAI21A-Calculated Discharge TemperatureAI22A-Calculated Liquid Line TemperatureAI23A-Suction Line TemperatureAI24A-Discharge Line TemperatureAI25A-Liquid Line TemperatureAI26A-Superheat TemperatureAI27A-Discharge Superheat TemperatureAI28A-Sub-cooling TemperatureAI29A-Compressor A1 PercentageAI30A-Compressor A2 PercentageAI31A-Condenser PercentageAI32A-EXV PositionAI33A-Compressor A1 CurrentAI34A-Compressor 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 CurrentAV1Leaving Water SP Max Reset VoltsAV2Leaving Water Max Temp SetpointAV3Leaving Water SP Min Reset VoltsAV4Leaving Water Min Temp SetpointAV5Low Chilled Water Out Cutoff TempAV6Ambient Temperature LockoutAV7High Coil Setpoint Reset LimitAV8Low Coil Setpoint Reset LimitAV9Superheat SetpointAV10Compressor Stage Above WindowAV11Compressor Stage Below WindowAV12Entering Water Sensor CalibrationAV13Leaving Water Sensor CalibrationAV14Outdoor Air Sensor CalibrationAV15Head Pressure SetpointAV16High Outlet Water Temp Failure TimeAV17Waterside Economizer Enable SetpointAV18WSE Primary Outlet SetpointAV19WSE Heat Exchange Outlet SetpointAV20WSE Freeze Protection SetpointAV21WSE Heat Exchange Inlet SetpointAV22WSE Fan Staging DelayAV23WSE Startup DelayAV24WSE Minimum VFD SpeedAV25WSE Minimum Mixing ValveAV26WSE Primary 3-Way Valve Slow StartAV27WSE Primary 3-Way Valve Slow StopAV28WSE Reset Alarm History {1 = Reset }AV29Compressor Modulation RateAV30Reset Unit Lockout {1 = Reset }AV31Auto/Run/Off CommandAV32Enable/Disable Main Relay #6AV33Enable/Disable Main Relay #7AV34Enable/Disable Main Relay #8BI1Run/Stop Input CommandBI2Proof of Water FlowBI3Emergency ShutdownBI4Phase LossBI5WSE Fan Run StatusBI6WSE at Maximum CapacityBI7WSE Enable StatusBI8WSE Alarm Not OperatingBI9WSE Alarm Freeze ProtectionBI10WSE Alarm Primary Outlet SensorBI11WSE Alarm Primary Feed SensorBI12WSE Alarm Heat Exchange InletBI13WSE Alarm Heat Exchange OutletBI14WSE Alarm VFD FaultBI15Primary A Pump 1 StatusBI16Primary A Pump 2 StatusBI17Pump Water Flow StatusBI18For Future UseBI19For Future UseBI20A-Fault Low SuctionBI21A-Fault Unsafe SuctionBI22A-Fault Trip High Discharge Pr.BI23A-Fault Compressor A1 Not RunningBI24A-Fault Compressor A2 Not RunningBI25A-Fault No Suction Line Temp SensorBI26A-Fault Low SuperheatBI27A-Fault High Discharge TempBI28A-Fault Compressor A1 False ActiveBI29A-Fault Compressor A2 False ActiveBI30A-Fault No Suction Pr. SensorBI31A-Fault Emergency ShutdownBI32A-Fault MODBUS Slave TimeoutBI33A-Fault High SuperheatBI34A-Fault High Saturation TemperatureBI35A-Fault Compressor A1 Over CurrentBI36A-Fault Compressor A2 Over CurrentBI37A-Fault Compressor A1 Under CurrentBI38A-Fault Compressor A2 Under CurrentBI39For Future UseBI40A-Warning Low Suction PressureBI41A-Warning Low Suction Pr. StartupBI42A-Warning High Discharge Pressure 1BI43A-Warning No Discharge Pr. SensorBI44A-Warning No Discharge Temp SensorBI45A-Warning High SuperheatBI46A-Warning Condenser FaultBI47A-Warning Condenser Over CurrentBI48A-Warning No Liquid Line Pr. SensorBI49A-Warning No Liquid Line Temp SensorBI50A-Warning High Discharge Pressure 2BI51A-Lockout Suction PressureBI52A-Lockout Low Discharge PressureBI53A-Lockout Compressor A1 Over CurrentBI54A-Lockout Compressor A2 Over CurrentBI55A-Lockout High Discharge TempBI56A-Lockout High Discharge PressureBI57A-Lockout Low SuperheatBI58A-Lockout High SuperheatBI59A-Lockout High Saturation TempBI60A-Lockout Compressor A1 Under CurrentBI61A-Lockout Compressor A2 Under CurrentBI62For Future UseBI63For Future UseBI64For Future UseBI65For Future UseBI66For Future UseBI67For Future UseBI68For Future UseBI69For Future UseBI70B-Fault Low SuctionBI71B-Fault Unsafe SuctionBI72B-Fault Trip High Discharge Pr.BI73B-Fault Compressor B1 Not RunningBI74B-Fault Compressor B2 Not RunningBI75B-Fault No Suction Line Temp SensorBI76B-Fault Low SuperheatBI77B-Fault High Discharge TempBI78B-Fault Compressor B1 False ActiveBI79B-Fault Compressor B2 False ActiveBI80B-Fault No Suction Pr. SensorBI81B-Fault Emergency ShutdownBI82B-Fault MODBUS Slave TimeoutBI83B-Fault High SuperheatBI84B-Fault High Saturation TemperatureBI85B-Fault Compressor B1 Over CurrentBI86B-Fault Compressor B2 Over CurrentBI87B-Fault Compressor B1 Under CurrentBI88B-Fault Compressor B2 Under CurrentBI89For Future UseBI90B-Warning Low Suction PressureBI91B-Warning Low Suction Pr. StartupBI92B-Warning High Discharge Pressure 1BI93B-Warning No Discharge Pr. SensorBI94B-Warning No Discharge Temp SensorBI95B-Warning High SuperheatBI96B-Warning Condenser FaultBI97B-Warning Condenser Over CurrentBI98B-Warning No Liquid Line Pr. SensorBI99B-Warning No Liquid Line Temp SensorBI100B-Warning High Discharge Pressure 2BI101B-Lockout Suction PressureBI102B-Lockout Low Discharge PressureBI103B-Lockout Compressor B1 Over CurrentBI104B-Lockout Compressor B2 Over CurrentBI105B-Lockout High Discharge TempBI106B-Lockout High Discharge PressureBI107B-Lockout Low SuperheatBI108B-Lockout High SuperheatBI109B-Lockout High Saturation TempBI110B-Lockout Compressor B1 Under CurrentBI111B-Lockout Compressor B2 Under CurrentBI112Chiller Fully LoadedMI1Operating 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.
- Analog value limits are printed as bare numbers; ranges are shown as printed, without units.
- Several binary inputs are marked For Future Use.
- Source: Appendix D BACnet parameters, guide pages 58-63.
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 LF 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 LF Chiller Controller
How many BACnet points does the AAON LF Chiller Controller have?
This list has 199 BACnet objects: 52 analog inputs, 34 analog values, 112 binary inputs, 1 multi-state input. The exact set on a given unit depends on its firmware, installed options and configuration.
Which AAON LF Chiller Controller BACnet points are writable?
34 of the 199 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 LF Chiller Controller BACnet documentation?
The source is LF Chiller Controller Technical Guide (G059100 Rev. 01D), revision 2020-11, published free by AAON at https://www.aaon.com/hubfs/Controls%20Literature/G059100-LFCHILLER-01C-201106.pdf.
What are the minimum BACnet points to integrate the AAON LF Chiller Controller?
Start with AV 31 Auto/Run/Off Command (Chiller command: 0 auto, 1 run, 2 off); AV 30 Reset Unit Lockout {1 = Reset } (Write 1 to reset a unit lockout); MI 1 Operating Status (Current unit mode); AI 4 Active Leaving Water Setpoint (Leaving water setpoint in use); AI 2 Entering Water Temperature (Entering water temperature); AI 3 Leaving Water Temperature (Leaving water temperature); BI 2 Proof of Water Flow (Water flow switch made); BI 3 Emergency Shutdown (Emergency shutdown input).
How do I enable BMS control of the AAON LF Chiller Controller?
AV 31 Auto/Run/Off Command (0 = Auto, 1 = Run, 2 = Off) runs the chiller from the BAS; BI 1 shows the Run/Stop input. AV 30 resets a unit lockout.
How do I check these points on the real LF 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 DX Chiller Controller
AAON packaged DX chillers (non-Turbocor compressors) with the Main DX Chiller Controller, refrigerant modules and optional waterside economizer and evaporative condenser modules.
Also known as: AAON DX Chiller Controller, Main DX Chiller Controller, G054280, SS1149, AAON DX 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: LF Chiller Controller Technical Guide · G059100 Rev. 01D · rev. 2020-11. Object names, instances and units are reproduced as published; descriptions are our own.