Easy BACnet- Home
- BACnet points lists
- Carrier
- RTU Open v5
Rooftop unit controller · BACnet points list
Carrier RTU Open v5 BACnet points list
Updated 28 October 2026
RTU Open is Carrier's multi-protocol controller for packaged rooftop units and heat pumps. It speaks BACnet MS/TP or ARC156 natively and can be switched to Modbus, N2 or LonWorks. Its device instance is derived from Carrier's vendor ID (16) and the rotary address switches. Points cover setpoints, sensor values, stages, economizer/ventilation, alarms and the 'system' points a BAS can write in place of local sensors.
This page lists 200 BACnet objects for the Carrier RTU Open v5 — 104 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Carrier’s own free documentation, linked below.
- Manufacturer
- Carrier
- Model
- RTU Open v5
- Equipment
- Rooftop unit controller
- Equipment type
- Rooftop units, AHUs & DOAS
- BACnet objects
- 200 (104 writable)
- Transport
- BACnet MS/TP, BACnet ARC156
- Firmware
- Not stated
- Default device instance
- 16101xx (xx = rotary switch address)
- Also known as
- RTU Open, OPN-RTU, RTU-Open, 11-808-697-01
BMS integration notes: Carrier RTU Open v5
Set the RTU Open for BACnet MS/TP with its DIP switches and rotary address, then set Occupancy Source to BAS On/Off so the BMS can command occupancy through keypad_ovrde. Write setpoints directly. Any sensor the BMS supplies (space temp, OAT, RH, CO2) goes into the system_* points at priority 16 and has to be refreshed within each point's refresh window.
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 |
|---|---|---|---|
| MV 1002 | occ_source | Set to 3 (BAS On/Off) to allow network occupancy | Write |
| MV 1001 | keypad_ovrde | BAS occupancy command: occupied/unoccupied | Write |
| BV 9001 | shutdown | Network shutdown command | Write |
| AV 3001 | occ_cl_stpt | Occupied cooling setpoint | Write |
| AV 3002 | occ_ht_stpt | Occupied heating setpoint | Write |
| MV 2002 | run_status | Current system mode | Read |
| BV 2008 | occ_status | Confirms occupied/unoccupied | Read |
| AV 2007 | space_temp | Space temperature the unit controls to | Read |
| AV 1008 | sa_temp | Supply air temperature | Read |
| BV 7008 | sfan_fail_alarm | Supply fan failure alarm | Read |
Enable & remote start
Occupancy Source (occ_source, MSV:1002) defaults to Always Occupied. Set it to 3 = BAS On/Off, then write keypad_ovrde (MSV:1001): 1=Inactive, 2=Occupied, 3=Unoccupied. The shutdown point (BV:9001) stops the unit from the network.
Heartbeat & communication loss
No general heartbeat. Each system point has a recommended refresh time (min/max), e.g. space temperature 1 min / 5 min, OAT 5 min / 60 min. The network value is only used while it keeps being refreshed within that window; for OAT, a lost network value raises the Outdoor Air Temp Sensor alarm and the OAT lockouts stop working.
Sensors & values from the BMS
Write system_spt (AV:1902), system_oat (AV:1901), system_rh (AV:1904), system_iaq (AV:1903), system_oaq (AV:1908) and oae (BV:1901, OA enthalpy) at BACnet priority 16, no more than once a minute. A network value overrides the local sensor while it is refreshed in time. Don't read the system point back to confirm a write, because the controller clears it after processing. Read the matching control point instead (space_temp, oa_temp, space_rh, iaq, oaq), at least 30 s after the write.
Network setup
- MS/TP MAC address is set on rotary switches SW1 (tens) and SW2 (ones); valid 01-99.
- Device instance is generated automatically as 16101xx (16 = Carrier vendor ID, xx = rotary address); it can be changed with an Equipment Touch.
- Baud is set on SW3 DIP 1-2 (9600/19.2k/38.4k/76.8k); 76.8k is the Carrier default; 8N1 fixed.
- Protocol DIP switches must be set for BACnet MS/TP and the jumper set to EIA-485; switch changes only take effect after a power cycle.
- Max Masters defaults to 127 and Max Info Frames to 10 (adjustable via Equipment Touch).
Watch out for
- System points must be written at priority 16; writes at any other priority are ignored.
- Never write a system point more than once per minute (60 s).
- Only controllers set as MS/TP masters answer Who-Is.
- Some points only apply with certain options (heat pump, VFD fan, economizer, humidity sensors).
Carrier RTU Open v5 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.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AV | 3032 | tempering_stpt | SA Vent / Temper Setpoint (default 65) | °F | Write | |
| AV | 1030 | vfd_spd_cfg | VFD Speed Config (default %) | %/V | Write | |
| AV | 3033 | heat_vfd_spd | Heating VFD Output (default 100) | % | Write | |
| AV | 83010 | ht_spd_volt | Voltage Used to Set IDF VFD Heat Speed (default 4.4) | V | Write | |
| AV | 83011 | max_spd_volt | Voltage Used to Set IDF VFD Maximum Speed (default 10) | V | Write | |
| AV | 83012 | min_spd_volt | Voltage Used to Set IDF VFD Minimum Speed (default 5.2) | V | Write | |
| AV | 83016 | sa_tempering_en | Tempering Enable (default Disable) | Write | ||
| AV | 81003 | vfd_spdv_test | VFD Speed Test (default 0) | V | Write | |
| AV | 2032 | vfd_volt_output | Supply Fan VFD Voltage | V | Read | |
| AV | 91010 | vfd_in_type | VFD Analog Input Channel Type (default 2 to 10) | Vdc | Write | |
| AV | 2003 | heat_run | Active Heat Stages | Read | ||
| AV | 3005 | eff_cl_stpt | Effective Cool Setpoint | °F | Read | |
| BV | 7011 | spt_hi_alarm | High Space Temperature | Read | 0=Normal; 1=Alarm | |
| BV | 7012 | spt_lo_alarm | Low Space Temperature | Read | 0=Normal; 1=Alarm | |
| AI | 1006 | ai_6 | Input_6 | °F | Read | |
| BV | 2001 | sfan | Supply Fan Relay State | Read | 0=Off; 1=On | |
| BV | 1003 | sfan_status | Supply Fan Status | Read | 0=Off; 1=On | |
| AV | 2022 | econ_output | Economizer Output | %Open | Read | |
| BV | 7006 | oaq_fail | Outdoor Air Quality Sensor | Read | 0=Normal; 1=Alarm | |
| AV | 9011 | iaq_dpr_max | DCV Max Vent Damper Pos (default 50) | %Open | Write | |
| AVmin | 2007 | space_temp | Space Temperature - Prime Variable | °F | Read | |
| AV | 9004 | hp_rev_cycle_lockout | HP Rev Cycle Lockout Temp (default -3) | °F | Write | |
| AV | 1901 | system_oat | System Outdoor Air Temperature (default -999) | °F | Write | |
| AV | 9029 | econ_purge_min | Economizer Purge Min Pos (default 40) | %Open | Write | |
| AV | 2020 | comp_run | Active Compressor Stages | Read | ||
| MVmin | 2002 | run_status | System Mode | Read | 1=Off; 2=Fan Only; 3=Economizer Cooling; 4=Cooling; 5=Heating; 6=Dehumidification; 7=Test; 8=Shutdown; 9=Unocc Free Cooling; 10=Fire Shutdown; 11=IAQ Override; 12=Pre-occ Purge; 13=IGC Override | |
| AVmin | 1008 | sa_temp | Supply Air Temperature | °F | Read | |
| AV | 3013 | iaq_stpt_max | DCV Max Ctrl Setpoint (default 650) | ppm | Write | |
| AV | 3011 | occ_dehum_stpt | Occ Relative Humidity Setpoint (default 60) | %rh | Write | |
| BVmin | 2008 | occ_status | Occupancy Status | Read | 0=Unoccupied; 1=Occupied | |
| MV | 2009 | start_type | Optimal Start Type (default 2) | Write | 1=None; 2=Temp Compensated; 3=Learning Adaptive | |
| AV | 3004 | unocc_ht_stpt | Unoccupied heat setpoint | °F | Write | |
| AV | 81001 | econ_test | Economizer Test (default 0) | %Open | Write | |
| BV | 7022 | sprh_sensor_fail | Space Relative Humidity Sensor | Read | 0=Normal; 1=Alarm | |
| AV | 1006 | stpt_adj | Setpoint Adjustment | °F | Read | |
| AV | 3006 | eff_ht_stpt | Effective Heat Setpoint | °F | Read | |
| AV | 9030 | econ_min_2 | Low Fan Econ Min Pos (default 33) | %Open | Write | |
| BV | 7007 | fire_alarm | Fire / Smoke Shutdown | Read | 0=Normal; 1=Alarm | |
| BV | 7517 | filter_rntm_clr | Reset Filter Alarm (default Inactive (0)) | Write | 0=Off; 1=On | |
| AV | 3003 | unocc_cl_stpt | Unoccupied cool setpoint | °F | Write | |
| BV | 7055 | zs_config_fail | ZS Sensor Configuration | Read | 0=Normal; 1=Alarm | |
| AV | 1011 | space_rh | Space Relative Humidity | %rh | Read | |
| AV | 1003 | oa_temp | Outdoor Air Temperature | °F | Read | |
| AV | 9002 | oat_cl_lockout | Cooling Lockout Temperature (default 45) | °F | Write | |
| AV | 3010 | pexh_stpt | Power Exhaust Setpoint (default 50) | %Open | Write | |
| MVmin | 1001 | keypad_ovrde | BAS On / Off (default 1) | Write | 1=Inactive; 2=Occupied; 3=Unoccupied | |
| AV | 1903 | system_iaq | System Space AQ (default -999) | ppm | Write | |
| AV | 1904 | system_rh | System Space RH (default -999) | % | Write | |
| BV | 7013 | comp_alarm | Compressor Status | Read | 0=Normal; 1=Alarm | |
| AV | 2019 | filter_service_hrs | Filter Service Alarm Timer (default 600) | hr | Write | |
| BV | 7039 | iaq_sensor_fail | Indoor Air Quality Sensor | Read | 0=Normal; 1=Alarm | |
| AV | 9003 | oat_ht_lockout | Heating Lockout Temperature (default 65) | °F | Write | |
| BV | 2006 | dehum | Dehumidification | Read | 0=Inactive; 1=Active | |
| BV | 2007 | aux_1 | Reversing Valve Relay State | Read | 0=Off; 1=On | |
| AV | 90000 | ppo | Password Protected Output Variable (default 0) | Write | ||
| AV | 9005 | econ_min | Vent Dmpr Pos / DCV Min Pos (default 20) | %Open | Write | |
| BV | 7017 | filter_alarm | Filter | Read | 0=Clean; 1=Dirty | |
| BV | 7024 | safety_alarm | Safety Chain | Read | 0=Normal; 1=Alarm | |
| AV | 3012 | unocc_dehum_stpt | Unocc Relative Humidity Setpoint (default 95) | %rh | Write | |
| AVmin | 3002 | occ_ht_stpt | Occupied heat setpoint | °F | Write | |
| BV | 7020 | loc_sat_sensor_fail | Supply Air Temp Sensor | Read | 0=Normal; 1=Alarm | |
| AV | 2016 | ovrde_time | Override Time Remaining | min | Read | |
| BV | 1013 | stpt_adj_enable | Setpoint Adjustment (default Active (1)) | Write | 0=Disable; 1=Enable | |
| AV | 1902 | system_spt | System Space Temperature (default -999) | °F | Write | |
| AV | 91006 | stpt_adj_offset | Space Temperature Offset Pot | °F | Read | |
| AV | 1908 | system_oaq | System Outdoor AQ (default -999) | ppm | Write | |
| BV | 7029 | oat_fail | Outdoor Air Temp Sensor | Read | 0=Normal; 1=Alarm | |
| BV | 7032 | spt_sensor_fail | SPT Sensor | Read | 0=Normal; 1=Alarm | |
| MV | 2004 | fan_run | Fan / Speed | Read | 1=Off; 2=Low; 3=Med; 4=High; 5=On | |
| AV | 9015 | stpt_adj_range | Setpoint Adjustment Range (default 5) | Δ°F | Write | |
| BV | 1901 | oae | Enthalpy (BACnet) (default Active (1)) | Write | 0=High; 1=Low | |
| AV | 9026 | optm_start | Optimal Start (default 1) | hr | Write | |
| AV | 9006 | cool_demand_level | System Cooling Demand Level | Read | ||
| AV | 9036 | heat_demand_level | System Heating Demand Level | Read | ||
| AV | 80001 | mstr_oa_temp | System OAT Master | °F | Read | |
| AV | 9023 | ovr_dur | T5x Override Duration (default 1) | hr | Write | |
| AV | 81002 | vfd_spd_test | VFD Speed Test (default 0) | % | Write | |
| BI | 1003 | di_3 | input_3 | Read | 0=Off; 1=On | |
| BI | 1004 | di_4 | input_4 | Read | 0=Off; 1=On | |
| BI | 1005 | di_5 | input_5 | Read | 0=Off; 1=On | |
| BI | 1008 | di_8 | input_8 | Read | 0=Off; 1=On | |
| BI | 1009 | di_9 | input_9 | Read | 0=Off; 1=On | |
| BV | 7030 | air_linkage_fail | Airside Linkage | Read | 0=Normal; 1=Alarm | |
| BV | 7026 | ai_cfg_alarm | Analog Input Configuration | Read | 0=Normal; 1=Alarm | |
| BV | 7014 | comp1_rntm_alarm | Compressor 1 Runtime | Read | 0=Normal; 1=Alarm | |
| BV | 2005 | comp_1 | Compressor 1 Relay State | Read | 0=Off; 1=On | |
| BV | 81005 | comp1_test | Compressor 1 Test (default Inactive (0)) | Write | 0=Disable; 1=Enable | |
| BV | 2004 | comp_2 | Compressor 2 Relay State | Read | 0=Off; 1=On | |
| BV | 7015 | comp2_rntm_alarm | Compressor 2 Runtime | Read | 0=Normal; 1=Alarm | |
| BV | 81004 | comp2_test | Compressor 2 Test (default Inactive (0)) | Write | 0=Disable; 1=Enable | |
| BV | 1008 | comp_status | Compressor Safety Status | Read | 0=Normal; 1=Trouble | |
| BV | 9002 | occ_exh | Continuous Occupied Exhaust (default Inactive (0)) | Write | 0=No; 1=Yes | |
| BV | 1027 | dcv_enable | DCV Control (default Inactive (0)) | Write | ||
| BV | 81006 | dehum_test | Dehumidification Test (default Inactive (0)) | Write | 0=Disable; 1=Enable | |
| BV | 1010 | door_contact_status | Door Contact Status | Read | 0=Off; 1=On | |
| BV | 99001 | econ_exist | Economizer Exists (default Inactive (0)) | Write | 0=No; 1=Yes | |
| BV | 1002 | enthalpy_status | Enthalpy Status | Read | 0=High; 1=Low | |
| BV | 91000 | fac_test_enable | Factory Test (default Inactive (0)) | Write | 0=Off; 1=On | |
| BV | 91001 | relay1_fac_test | Factory Test Relay 1 Control (default Inactive (0)) | Write | 0=Off; 1=On | |
| BV | 91002 | relay2_fac_test | Factory Test Relay 2 Control (default Inactive (0)) | Write | 0=Off; 1=On | |
| BV | 91003 | relay3_fac_test | Factory Test Relay 3 Control (default Inactive (0)) | Write | 0=Off; 1=On | |
| BV | 91004 | relay4_fac_test | Factory Test Relay 4 Control (default Inactive (0)) | Write | 0=Off; 1=On | |
| BV | 91005 | relay5_fac_test | Factory Test Relay 5 Control (default Inactive (0)) | Write | 0=Off; 1=On | |
| BV | 91006 | relay6_fac_test | Factory Test Relay 6 Control (default Inactive) | Write | 0=Off; 1=On | |
| BV | 91007 | relay7_fac_test | Factory Test Relay 7 Control (default Inactive (0)) | Write | 0=Off; 1=On | |
| BV | 91008 | relay8_fac_test | Factory Test Relay 8 Control (default Inactive (0)) | Write | 0=Off; 1=On | |
| BV | 1004 | filter_status | Filter Status | Read | 0=Clean; 1=Dirty | |
| BV | 1005 | firedown_status | Fire Shutdown Status | Read | 0=Run Enabled; 1=Shutdown | |
| BV | 81003 | heat1_test | Heat 1Test (default Inactive (0)) | Write | 0=Disable; 1=Enable | |
| BV | 81002 | heat2_test | Heat 2Test (default Inactive (0)) | Write | 0=Disable; 1=Enable | |
| BV | 2003 | heat_1 | Heat Stage 1 Relay State | Read | 0=Off; 1=On | |
| BV | 2002 | heat_2 | Heat Stage 2 Relay State | Read | 0=Off; 1=On | |
| BV | 99002 | heat_type | Heat Type (default Inactive (0)) | Write | 0=Electric; 1=Gas | |
| BV | 81010 | hi_spd_test | High Speed Fan Test (default Inactive (0)) | Write | 0=Disable; 1=Enable | |
| BV | 1006 | humstat_status | Humidistat Input Status | Read | 0=High; 1=Low | |
| BV | 1022 | igcovr_status | IGC Override | Read | 0=Off; 1=Active | |
| BV | 7003 | loc_oat_sensor_fail | Local OAT Sensor | Read | 0=Normal; 1=Alarm | |
| BV | 1007 | occ_contact_status | Occupancy Contact | Read | 0=Off; 1=On | |
| BV | 2010 | pexh | Power Exhaust Relay State | Read | 0=Off; 1=On | |
| BV | 81008 | pexh_test | Power Exhaust Test (default Inactive (0)) | Write | 0=Disable; 1=Enable | |
| BV | 7514 | comp1_rntm_clr | Reset Comp 1 Runtime Alarm (default Inactive (0)) | Write | 0=Run; 1=Clear | |
| BV | 7515 | comp2_rntm_clr | Reset Comp 2 Runtime Alarm (default Inactive (0)) | Write | 0=Run; 1=Clear | |
| BV | 7510 | sfan_rntm_clr | Reset Supply Fan Runtime Alarm (default Inactive (0)) | Write | 0=Run; 1=Clear | |
| BV | 1026 | rev_vlv_type | Reversing Valve Output (default Inactive (0)) | Write | ||
| BV | 1025 | rh_enable | RH Control (default Inactive (0)) | Write | ||
| BV | 1009 | safety_status | Safety Chain Feedback | Read | 0=Off; 1=On | |
| BV | 8000 | schedule | Schedule (default 0) | Write | 0=Unoccupied; 1=Occupied | |
| BV | 81000 | test_enable | Service Test (default Inactive (0)) | Write | 0=Disable; 1=Enable | |
| BV | 7002 | slidepot_alarm | Setpoint Slider | Read | 0=Normal; 1=Alarm | |
| BVmin | 9001 | shutdown | Shutdown (default Inactive (0)) | Write | 0=Inactive; 1=Active | |
| BVmin | 7008 | sfan_fail_alarm | Supply Fan Failure | Read | 0=Normal; 1=Alarm | |
| BV | 7009 | sfan_hand_alarm | Supply Fan in Hand | Read | 0=Normal; 1=Alarm | |
| BV | 7010 | sfan_rntm_alarm | Supply Fan Runtime | Read | 0=Normal; 1=Alarm | |
| BV | 7025 | di_cfg_alarm | Switch Configuration | Read | 0=Normal; 1=Alarm | |
| BV | 2011 | shutdown_status | System is shut down | Read | 0=No; 1=Yes | |
| BV | 80001 | ntfc_ena | Unocc Free Cool (default Inactive (0)) | Write | 0=Disable; 1=Enable | |
| MV | 2005 | link_ahu_mode | Air Source Mode | Read | 1=Off; 2=Warmup; 3=Heating; 4=Cooling; 5=Freecool; 6=Pressure; 7=Evac; 8=Vent | |
| MV | 91003 | comp_stages | Compressor Stages (default 2) | Write | 1=One Stage; 2=Two Stages | |
| MV | 2001 | mode_status | Equipment Status | Read | 1=Disabled; 2=Test; 3=Run | |
| MV | 9031 | fan_type | Fan Control (default 3) | Write | 1=Single Speed; 2=Two Speed; 3=Variable Speed | |
| MV | 9032 | fan_mode | Fan Mode (default 2) | Write | 1=Auto; 2=Continuous; 3=Always On | |
| MV | 81001 | ai1_function | Input 1 Function (default 1) | Write | 1=No Sensor; 2=IAQ Sensor; 3=OAQ Sensor; 4=Space RH Sensor | |
| MV | 81002 | ai2_function | Input 2 Function (default 1) | Write | 1=No Sensor; 2=IAQ Sensor; 3=OAQ Sensor; 4=Space RH Sensor | |
| MV | 81003 | di3_function | Input 3 Function (default 2) | Write | 1=No Function; 2=Compressory Safety; 3=Fan Status; 4=Filter Status; 5=Remote Occupancy; 6=Door Contact | |
| MV | 81013 | di3_type | Input 3 Switch Configuration (default 1) | Write | 1=NO; 2=NC | |
| MV | 81005 | di5_function | Input 5 Function (default 2) | Write | 1=No Function; 2=Fire Shutdown; 3=Fan Status; 4=Filter Status; 5=Remote Occupancy; 6=Door Contact | |
| MV | 81015 | di5_type | Input 5 Switch Configuration (default 1) | Write | 1=NO; 2=NC | |
| MV | 81008 | di8_function | Input 8 Function (default 2) | Write | 1=No Function; 2=Enthalpy Switch; 3=Fan Status; 4=Filter Status; 5=Remote Occupancy; 6=Door Contact | |
| MV | 81018 | di8_type | Input 8 Switch Configuration (default 1) | Write | 1=NO; 2=NC | |
| MV | 81009 | di9_function | Input 9 Function (default 2) | Write | 1=No Function; 2=HumidiStat; 3=Fan Status; 4=Filter Status; 5=Remote Occupancy; 6=Door Contact | |
| MV | 81019 | di9_type | Input 9 Switch Configuration (default 1) | Write | 1=NO; 2=NC | |
| MV | 91004 | heat_stages | Number Of Heat Stages (default 2) | Write | 1=1; 2=2; 3=0 | |
| MVmin | 1002 | occ_source | Occupancy Source (default 1) | Write | 1=Always Occupied; 2=BACnet Schedule; 3=BAS On/Off; 4=Remote Occ Input | |
| MV | 9001 | spt_type | Space sensor type (default 1) | Write | 1=T55; 2=T56; 3=SPT Sensor; 4=None | |
| MV | 2003 | spt_status | Space Temp Source | Read | 1=Sensor Failure; 2=SPT Sensor; 3=T55 / T56; 4=Network; 5=Airside Linkage; 6=Locked Value | |
| MV | 9018 | unit_type | Unit Type (default 2) | Write | 1=Heat / Cool; 2=LC WeatherExpert; 3=HP O/B Ctrl; 4=HP Y1/W1 Ctrl | |
| BV | 7051 | zst_sensor_fail | ZS Temp Sensor | Read | 0=Normal; 1=Alarm | |
| BV | 7054 | econ_opr | Economizer Operation | Read | 0=Normal; 1=Fault Detected | |
| BV | 7056 | spt_alrm_status | Space Temperature Alarm Status | Read | 0=Normal; 1=Alarm | |
| AI | 1 | zone_temp_zone_temp | SPT Sensor | °F | Read | |
| AV | 1 | zone_temp_override_time_remaining | SPT Sensor | min | Read | |
| AI | 1010 | ai_10 | input_10 | °F | Read | |
| AV | 91001 | ao1_fac_test | Factory Test Analog 1 Control (default 0) | % | Write | |
| AV | 9008 | oat_ec_lockout | Economizer High OAT Lockout Temp (default 75) | °F | Write | |
| AV | 83004 | sat_ht_max | Maximum Heating SAT (default 120) | °F | Write | |
| AV | 2018 | comp2_rntm | Compressor 2 Runtime | hr | Read | |
| AV | 2611 | link_max_dmpr | Linkage Max Damper Position | % | Read | |
| AV | 2608 | link_sat | Air Source Supply Air Temp | °F | Read | |
| AV | 3026 | max_vfd_spd | Max VFD Output (default 100) | % | Write | |
| AV | 3028 | dehum_min_vfd | Dehum Min VFD Output (default 100) | % | Write | |
| AV | 2609 | link_ahu_oat | Air Source Outdoor Air Temp | °F | Read | |
| AV | 83010 | stg_3_sat | Stage 3 SAT Stpt (default 56) | °F | Write | |
| AV | 83008 | stg_1_sat | Stage 1 SAT Stpt (default 57) | °F | Write | |
| AV | 3025 | oat_auxht_lockout | HP Aux Heat Lockout Temp (default 40) | °F | Write | |
| AI | 1001 | ai_1 | input_1 | Read | ||
| AV | 91002 | ao2_fac_test | Factory Test Analog 2 Control (default 0) | V | Write | |
| AV | 83007 | comp2_service_hrs | Compressor 2 Service Alarm Timer (default 0) | hr | Write | |
| AV | 83006 | comp1_service_hrs | Compressor 1 Service Alarm Timer (default 0) | hr | Write | |
| AV | 2017 | comp1_rntm | Compressor 1 Runtime | hr | Read | |
| AV | 3027 | min_vfd_spd | Min VFD Output (default 40) | % | Write | |
| AV | 83009 | stg_2_sat | Stage 2 SAT Stpt (default 57) | °F | Write | |
| AI | 1012 | slidepot_volts | slidepot voltage reading | Read | ||
| AV | 2015 | filter_rntm | Filter Runtime | hr | Read | |
| AV | 9024 | fan_delay_off | Fan Off Delay (default 90) | seconds | Write | |
| AI | 1007 | ai_7 | input_7 | °F | Read | |
| AI | 1011 | ai_11 | input_11 | Read | ||
| AI | 1002 | ai_2 | input_2 | Read | ||
| AV | 83003 | sat_cl_min | Minimum Cooling SAT (default 50) | °F | Write | |
| AV | 9007 | start_delay | Power Fail Restart Delay (default 5) | seconds | Write | |
| AV | 83005 | sfan_service_hrs | Supply Fan Service Alarm Timer (default 0) | hr | Write | |
| AV | 2014 | sfan_rntm | Supply Fan Runtime | hr | Read | |
| AV | 1009 | iaq | Indoor Air Quality CO2 (ppm) | ppm | Read | |
| AV | 2027 | vfd_output | Supply Fan VFD | % | Read | |
| BV | 7005 | iaq_alarm | Indoor Air Quality | Read | 0=Normal; 1=Alarm | |
| BV | 7004 | sat_alarm | Supply Air Temperature | Read | 0=Normal; 1=Alarm | |
| BV | 7018 | sprh_hi_alarm | Space Relative Humidity | Read | 0=Normal; 1=Alarm | |
| BV | 7001 | spt_fail | Space Temp Sensor | Read | 0=Normal; 1=Alarm | |
| AV | 1012 | oaq | Outdoor Air Quality CO2 (ppm) | ppm | Read | |
| BV | 7050 | igc_alarm | Gas Valve | Read | 0=Normal; 1=Alarm | |
| AVmin | 3001 | occ_cl_stpt | Occupied cool setpoint | °F | Write |
No points match these filters.
Integration notes
- System points (system_spt, system_oat, system_rh, system_iaq, etc.) must be written at BACnet priority 16 and no more than once per minute; -999 means no network value.
- Some points only apply to certain unit configurations (heat pump, VFD fan, economizer, humidity options).
- Several display names in the source table are just 'Setpoint'; the BACnet object name tells you which one (e.g. unocc_ht_stpt).
- Instances use Carrier's numbering scheme (e.g. AV:1901, BV:7011), not small sequential numbers.
- AV:83010 is listed twice in the source (ht_spd_volt and stg_3_sat); verify on the controller which one is present.
- Each point also has a Modbus register in the same table; only the BACnet side is captured here.
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. Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the RTU Open v5 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 Carrier RTU Open v5
How many BACnet points does the Carrier RTU Open v5 have?
This list has 200 BACnet objects: 8 analog inputs, 80 analog values, 5 binary inputs, 83 binary values, 24 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Carrier RTU Open v5 BACnet points are writable?
104 of the 200 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.
Where is the official Carrier RTU Open v5 BACnet documentation?
The source is RTU Open v5 Integration Guide (Appendix A: Network Points List) (11-808-697-01), revision 2019-11-19, published free by Carrier at https://www.shareddocs.com/hvac/docs/1000/Public/04/11-808-697-01.pdf.
What are the minimum BACnet points to integrate the Carrier RTU Open v5?
Start with MV 1002 occ_source (Set to 3 (BAS On/Off) to allow network occupancy); MV 1001 keypad_ovrde (BAS occupancy command: occupied/unoccupied); BV 9001 shutdown (Network shutdown command); AV 3001 occ_cl_stpt (Occupied cooling setpoint); AV 3002 occ_ht_stpt (Occupied heating setpoint); MV 2002 run_status (Current system mode); BV 2008 occ_status (Confirms occupied/unoccupied); AV 2007 space_temp (Space temperature the unit controls to); AV 1008 sa_temp (Supply air temperature); BV 7008 sfan_fail_alarm (Supply fan failure alarm).
How do I enable BMS control of the Carrier RTU Open v5?
Occupancy Source (occ_source, MSV:1002) defaults to Always Occupied. Set it to 3 = BAS On/Off, then write keypad_ovrde (MSV:1001): 1=Inactive, 2=Occupied, 3=Unoccupied. The shutdown point (BV:9001) stops the unit from the network.
Does the Carrier RTU Open v5 need a BACnet heartbeat or have a communication timeout?
No general heartbeat. Each system point has a recommended refresh time (min/max), e.g. space temperature 1 min / 5 min, OAT 5 min / 60 min. The network value is only used while it keeps being refreshed within that window; for OAT, a lost network value raises the Outdoor Air Temp Sensor alarm and the OAT lockouts stop working.
Can the BMS supply sensor values to the Carrier RTU Open v5?
Write system_spt (AV:1902), system_oat (AV:1901), system_rh (AV:1904), system_iaq (AV:1903), system_oaq (AV:1908) and oae (BV:1901, OA enthalpy) at BACnet priority 16, no more than once a minute. A network value overrides the local sensor while it is refreshed in time. Don't read the system point back to confirm a write, because the controller clears it after processing. Read the matching control point instead (space_temp, oa_temp, space_rh, iaq, oaq), at least 30 s after the write.
How do I check these points on the real RTU Open v5?
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 Carrier BACnet points lists
- Water-cooled screw chiller controller (BACnet option)
Carrier 30HXA / 30HXC 076-271 Series 9 (UPC Open BACnet option)
Carrier 30HXA condenserless and 30HXC water-cooled screw chillers, sizes 076-271, Series 9 with ComfortLink controls and the BACnet communication option.
Also known as: 30HX, 30HXA, 30HXC, 30HX-2T, UPC Open, ComfortLink, screw chiller - Applied rooftop unit controller
Carrier 48/50K and 48/50V Rooftop (SmartVu PIC 6.1)
Carrier 48/50K and 48/50V applied rooftop units (gas heat or electric heat, R-454B) with SmartVu controls on PIC 6.1 hardware.
Also known as: SmartVu, PIC 6.1, PIC6.1, 48K, 50K, 48V, 50V, 48/50K, 48/50V, Carrier applied rooftop, 48-50-ART-SVU-1T - Water-cooled centrifugal chiller controller
Carrier AquaEdge 19DV (PIC6)
Carrier AquaEdge 19DV two-stage centrifugal chillers with the PIC6 controller.
Also known as: 19DV, AquaEdge 19DV, PIC6, 19DV-CLT-3T, centrifugal chiller - Water-cooled centrifugal chiller controller
Carrier AquaEdge 19MV (PIC6)
Carrier AquaEdge 19MV two-stage semi-hermetic centrifugal chillers with Greenspeed Intelligence (magnetic bearings) and PIC6 controls.
Also known as: 19MV, AquaEdge 19MV, 19MV-CLT-3T, PIC6, magnetic bearing centrifugal chiller - Water-cooled centrifugal chiller controller
Carrier AquaEdge 19XR (PIC 5)
Carrier AquaEdge 19XR two-stage semi-hermetic centrifugal chillers with PIC 5 controls.
Also known as: 19XR, AquaEdge 19XR, PIC 5, PIC5, 19XR-CLT-3T, centrifugal chiller - Water-cooled screw chiller controller
Carrier AquaEdge 23XRV (PIC6)
Carrier AquaEdge 23XRV variable-speed water-cooled screw chillers with the PIC6 touchscreen controller.
Also known as: 23XRV, AquaEdge 23XRV, PIC6, 23XRV-3T, variable speed screw chiller - Air-cooled screw chiller controller (BACnet option)
Carrier AquaForce 30XA 080-501 (UPC Open BACnet option)
Carrier AquaForce 30XA080-501 air-cooled screw chillers with the BACnet communication option (UPC Open controller).
Also known as: 30XA, AquaForce 30XA, 30XA-7T, UPC Open, Carrier Controller, screw chiller - Air-cooled screw chiller (via BACnet translator)
Carrier AquaForce 30XA 140-352 (BACnet/Modbus Translator)
Carrier AquaForce 30XA 140-352 air-cooled screw chillers with Touch Pilot controls and the factory BACnet/Modbus translator.
Also known as: 30XA, AquaForce 30XA, 30XA-100T, Touch Pilot, BACnet/Modbus translator - Air-cooled screw chiller controller
Carrier AquaForce 30XV 140-500 Series B (PIC6.1 Carrier Controller)
Carrier AquaForce 30XV140-500 Series B variable-speed air-cooled screw chillers with the PIC6.1 Carrier Controller and version 9.x software.
Also known as: 30XV, AquaForce 30XV, 30XV Series B, 30XV-6T, PIC6.1, Carrier Controller, Greenspeed - Scroll chiller / heat pump controller
Carrier AquaSnap 30MP (PIC6 Carrier Controller)
Carrier AquaSnap 30MPW017-080 water-cooled, 30MPA021-080 condenserless and 30MPQ021-080 heat pump chillers with scroll compressors and PIC6 (Carrier Controller).
Also known as: 30MPW, 30MPA, 30MPQ, 30MP, AquaSnap 30MP, 30MP-8T, Carrier Controller - Air-cooled scroll chiller controller (BACnet option)
Carrier AquaSnap 30RAP 010-150 (UPC Open BACnet option)
Carrier AquaSnap 30RAP010-150 air-cooled chillers and 30RAP011-060 with Greenspeed Intelligence (R-410A, ComfortLink controls) fitted with the BACnet communication option.
Also known as: 30RAP, AquaSnap 30RAP, 30RAP-8T, 30RAP Greenspeed, UPC Open, ComfortLink - Air-cooled scroll chiller controller (BACnet option)
Carrier AquaSnap 30RB 060-390 (UPC Open BACnet option)
Carrier AquaSnap 30RB060-390 air-cooled chillers and 30RB080-390 with Greenspeed Intelligence (ComfortLink controls) fitted with the BACnet communication option.
Also known as: 30RB, AquaSnap 30RB, 30RB-8T, 30RB Greenspeed, UPC Open, ComfortLink - Air-cooled scroll chiller controller
Carrier AquaSnap 30RC 010-060
Carrier AquaSnap 30RC 010-060 air-cooled scroll chillers (with or without Greenspeed fans) using the Carrier Controller.
Also known as: 30RC, AquaSnap 30RC, 30RC-101T, Carrier Controller, 30RC BACnet IP - Networked room thermostat
Carrier ComfortVu BACnet Thermostat
Carrier ComfortVu wall thermostats controlling fan coils or AC/heat pump units.
Also known as: ComfortVu, Carrier ComfortVu, 11-808-726-01 - Fan coil unit controller
Carrier Fan Coil Open
Carrier fan coil units fitted with the Fan Coil Open (OPN-FC) multi-protocol controller.
Also known as: Fan Coil Open, OPN-FC, Carrier Fan Coil controller, 11-808-540-01 - Water-source heat pump controller
Carrier WSHP Open v3
Carrier water-source heat pumps fitted with the WSHP Open multi-protocol controller.
Also known as: WSHP Open, WSHP-Open, Carrier water source heat pump controller, 11-808-539-01
Source: RTU Open v5 Integration Guide (Appendix A: Network Points List) · 11-808-697-01 · rev. 2019-11-19. Object names, instances and units are reproduced as published; descriptions are our own.