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Scroll chiller controller (BACnet option) · BACnet points list

Carrier AquaSnap 30MPA/30MPW 016-071 (ComfortLink, UPC Open BACnet option) BACnet points list

Updated 12 November 2026

Short answer

This is the older ComfortLink generation of the 30MP, before the PIC6 Carrier Controller. BACnet MS/TP comes from a UPC Open controller in the main control box, which reads the ComfortLink chiller over CCN. The network points list has 126 objects: AVs, BVs and a few multistate values for start/stop, emergency stop, control point, setpoints, demand limit, water temperatures, refrigerant pressures, compressor status, run hours, strainer service and five user-defined points.

This page lists 126 BACnet objects for the Carrier AquaSnap 30MPA/30MPW 016-071 (ComfortLink, UPC Open BACnet option) — 31 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
AquaSnap 30MPA/30MPW 016-071 (ComfortLink, UPC Open BACnet option)
Equipment
Scroll chiller controller (BACnet option)
Equipment type
Chillers
BACnet objects
126 (31 writable)
Transport
BACnet MS/TP
Firmware
Not stated
Default device instance
Network number 16101 followed by the MAC address (MAC 20 gives 1610120)
Also known as
30MP, 30MPA, 30MPW, 30MPA016-071, 30MPW016-071, AquaSnap 30MP, 30MP-6T, UPC Open, ComfortLink, scroll chiller
Source document
AquaSnap 30MPA,MPW016-071 Liquid Chillers with Scroll Compressors and ComfortLink Controls - Controls, Start-Up, Operation, Service, and Troubleshooting (Appendix C, BACnet Communication Option, Table G Network Points List) · 30MP-6T · rev. 10-23
Download CSV 126 rows Download EDE B.I.G.-EU JSON Manufacturer PDF ↗ Compare with your scan Download Easy BACnet Mobile App Google Play

Reference only, provided as-is: verify against Carrier’s current documentation and the live device before use. Not official Carrier information. Terms of use.

BMS integration notes: Carrier AquaSnap 30MPA/30MPW 016-071 (ComfortLink, UPC Open BACnet option)

Integration in brief

Address the UPC Open with its rotary switches, set the BAS port DIP switches for MS/TP and the baud rate, and set the chiller control method to CCN (Configuration > OPT2 > CTRL = 3). The BMS then starts and stops the chiller with BV 4 (CHIL_S_S), can write the control point and demand limit, and reads control mode, fluid temperatures, capacity and alarm state.

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.

ObjectNameWhyAccess
BV 4chil_s_s_1Network start/stopWrite
BV 6emstop_1Emergency stop commandWrite
AV 5ctrl_pnt_1Control point (leaving fluid setpoint)Write
AV 2dem_lim_1Demand limit, 0-100 %Write
AV 8stat_1Control mode codeRead
AV 31cool_lwt_1Cooler leaving fluid temperatureRead
AV 30cool_ewt_1Cooler entering fluid temperatureRead
AV 3cap_t_1Percent total capacityRead
BV 59alm_1Alarm state (normal/alarm)Read

Enable & remote start

Set the control method to CCN (Configuration > OPT2 > CTRL = 3) with the Enable/Off/Remote switch in Enable (or Remote with the contacts closed). The BMS then forces CHIL_S_S (BV 4) between Start and Stop; control mode reads 2 (Off CCN) or 6 (On CCN). Monitoring only does not need CTRL = 3.

Network setup

Watch out for

Carrier AquaSnap 30MPA/30MPW 016-071 (ComfortLink, UPC Open BACnet option) 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.

126 of 126 shown
Type
AnalogBinaryMulti-state
Access
Show
Carrier AquaSnap 30MPA/30MPW 016-071 (ComfortLink, UPC Open BACnet option) BACnet Points List
DescriptionStates
AVmin2dem_lim_1Active Demand Limit%Write
AVmin3cap_t_1Percent Total Capacity (CAP_T)%Read
AV4sp_1Active Setpoint°FRead
AVmin5ctrl_pnt_1Control Point°FWrite
AV6ewt_1Entering Fluid Temp°FRead
AV7lwt_1Leaving Fluid Temp°FRead
AVmin8stat_1Control ModeRead
AV9stage_1Requested StageRead
AV10cond_ewt_1Condenser Entering Fluid°FRead
AV11capa_t_1Percent Total Capacity (CAPA_T)%Read
AV12capa_a_1Percent Available Cap. (CAPA_A)%Read
AV13dp_a_1Discharge Pressure (DP_A)psigRead
AV14sp_a_1Suction Pressure (SP_A)psigRead
AV15disgas_1Discharge Gas Temp°FRead
AV16tmp_scta_1Saturated Condensing Tmp (TMP_SCTA)°FRead
AV17tmp_ssta_1Saturated Suction Temp (TMP_SSTA)°FRead
AV18cond_lwt_1Condenser Leaving Fluid°FRead
AV20tmp_rgta_1Compr Return Gas Temp (TMP_RGTA)°FRead
AV29hr_b1_1Compressor B1 Run HourshrRead
AVmin30cool_ewt_1Cooler Entering Fluid°FRead
AVmin31cool_lwt_1Cooler Leaving Fluid°FRead
AV32dual_lwt_1Lead/Lag Leaving Fluid°FRead
AV33rst_ma_14-20 ma Reset SignalmARead
AV34cy_b1_1Compressor B1 StartsRead
AV35tmp_rgtb_1Compr Return Gas Temp (TMP_RGTB)°FRead
AV36lmt_ma_14-20 ma Demand SignalmARead
AV37dl_stat_1CCN Loadshed SignalRead
AV38lwt_sp_1Cooler LWT Setpoint°FRead
AV39min_left_1Minutes Left for StartminRead
AV40dp_b_1Discharge Pressure (DP_B)psigRead
AV41pump_dly_1Cooler Pump Shutdown DlyminWrite
AV42delay_1Minutes Off TimeminWrite
AV43lead_typ_1Lead/Lag Circuit SelectWrite
AV44sh_a_1Suction Superheat Temp (SH_A)°FRead
AV45capb_a_1Percent Available Cap. (CAPB_A)%Read
AV46capb_t_1Percent Total Capacity (CAPB_T)%Read
AV47tmp_sctb_1Saturated Condensing Tmp (TMP_SCTB)°FRead
AV48tmp_sstb_1Saturated Suction Temp (TMP_SSTB)°FRead
AV49sp_b_1Suction Pressure (SP_B)psigRead
AV50sh_b_1Suction Superheat Temp (SH_B)°FRead
AV51si_strnr_1Strainer Srvc IntervalhrWrite
AV52st_cdown_1Strainer Srvc CountdownhrRead
AV53csp1_1Cooling Setpoint 1°FWrite
AV54csp2_1Cooling Setpoint 2°FWrite
AV55csp3_1ICE Setpoint°FWrite
AV56cramp_1Cooling Ramp Loading°FWrite
AV57mr_mach_1Machine Operating HourshrRead
AV58cy_mach_1Machine StartsRead
AV60hr_a1_1Compressor A1 Run HourshrRead
AV61hr_a2_1Compressor A2 Run HourshrRead
AV62hr_a3_1Compressor A3 Run HourshrRead
AV68cy_a1_1Compressor A1 StartsRead
AV69cy_a2_1Compressor A2 StartsRead
AV70cy_a3_1Compressor A3 StartsRead
AV71hr_cpump_1Cooler Pump Run HourshrRead
AV72hr_dpump_1Condenser Pump Run HourshrRead
AV77seq_type_1Loading Sequence SelectWrite
AV78a1unltme_1Comp A1 Unload TimesecRead
AV80dmv_lvl_1_perct_1Demand Level 1Write
AV81dmv_lvl_2_perct_1Demand Level 2Write
AV82dmv_lvl_3_perct_1Demand Level 3Write
AV85hsp_1Head Setpoint°FWrite
AV86cndv_1Cond Water Valve % Open%Write
AV1003oa_temp_1Outdoor Air Temperature°FWrite
AV2007space_temp_1Space Temperature°FWrite
AV2901user_analog_1_1User Defined Analog 1Write
AV2902user_analog_2_1User Defined Analog 2Write
AV2903user_analog_3_1User Defined Analog 3Write
AV2904user_analog_4_1User Defined Analog 4Write
AV2905user_analog_5_1User Defined Analog 5Write
AV9006cool_demand_level_1System Cooling Demand LevelRead
BV2condpump_1Condenser Pump RelayReadOn/Off
BVmin4chil_s_s_1CCN ChillerWriteStart/Stop
BV5mode_1Override Modes in EffectReadYes/No
BVmin6emstop_1Emergency StopWriteEnable/Emstop
BV7coolpump_1Cooler Pump RelayReadOn/Off
BV11coolflow_1Cooler Flow SwitchReadOpen/Close
BV13k_a1_rly_1Compressor A1 RelayReadOn/Off
BV14k_a2_rly_1Compressor A2 RelayReadOn/Off
BV15k_a3_rly_1Compressor A3 RelayReadOn/Off
BV16k_a1_fbk_1Compressor A1 FeedbackReadOn/Off
BV17k_a2_fbk_1Compressor A2 FeedbackReadOn/Off
BV18k_a3_fbk_1Compressor A3 FeedbackReadOn/Off
BV25dmd_sw1_1Demand Limit Switch 1ReadOn/Off
BV26dmd_sw2_1Demand Limit Switch 2ReadOn/Off
BV27ice_done_1Ice DoneReadOn/Off
BV29dual_in_1Dual Setpoint SwitchReadOn/Off
BV30mode_1_1CSM Controlling ChillerReadOn/Off
BV31mode_2_1WSM Controlling ChillerReadOn/Off
BV32mode_3_1Master/Slave ControlReadOn/Off
BV33mode_5_1Ramp Load LimitedReadOn/Off
BV34mode_6_1Timed Override in EffectReadOn/Off
BV35mode_7_1Low Cooler Suction Temp AReadOn/Off
BV37mode_9_1Slow Change OverrideReadOn/Off
BV38mode_10_1Minimum OFF Time ActiveReadOn/Off
BV39mode_13_1Dual SetpointReadOn/Off
BV40mode_14_1Temperature ResetReadOn/Off
BV41mode_15_1Demand/Sound LimitedReadOn/Off
BV42mode_16_1Cooler Freeze ProtectionReadOn/Off
BV43mode_17_1Low Temperature CoolingReadOn/Off
BV44mode_18_1High Temperature CoolingReadOn/Off
BV45mode_19_1Making ICEReadOn/Off
BV46mode_20_1Storing ICEReadOn/Off
BV47mode_21_1High SCT Circuit AReadOn/Off
BV49mode_23_1Minimum Comp. On TimeReadOn/Off
BV50mode_24_1Pump Off Delay TimeReadOn/Off
BV51md_a_oil_1Circuit A Trio Oil MgmtReadOn/Off
BV55st_maint_1Strainer Maint. DoneWriteYes/No
BVmin59alm_1Alarm StateReadNormal/Alarm
BV66k_b1_fbk_1Compressor B1 FeedbackReadOn/Off
BV67k_b1_rly_1Compressor B1 RelayReadOn/Off
BV68mode_22_1High SCT Circuit BReadOn/Off
BV69mode_8_1Low Cooler Suction Temp BReadOn/Off
BV79mlv_rly_1Minimum Load Valve RelayReadOn/Off
BV83dem_lmt_act_1System Demand LimitingReadActive/Inactive
BV2008occ_status_1Occupancy StatusReadYes/No
BV2911user_binary_1_1User Defined Binary 1Write
BV2912user_binary_2_1User Defined Binary 2Write
BV2913user_binary_3_1User Defined Binary 3Write
BV2914user_binary_4_1User Defined Binary 4Write
BV2915user_binary_5_1User Defined Binary 5Write
BV2999element_stat_1Element Comm StatusReadNo Comm/Normal
MV4fluidtyp_msv_1Cooler FluidRead1=Water, 2=Medium Brine
MV5control_msv_1Control MethodRead1=Switch, 2=Occupancy, 3=Occupancy, 4=CCN
MV7crst_typ1_msv_1Cooling Reset TypeRead1=No Reset, 2=4-20mA Input, 3=External Temp - Oat, 4=Return Fluid, 5=External Temp - Spt
MV8dmd_ctrl_msv_1Demand Limit SelectRead1=None, 2=External Sw. Input, 3=4-20mA Input, 4=Loadshed
Object ID lookup: Carrier AquaSnap 30MPA/30MPW 016-071 point IDs by name

Integration notes

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 AquaSnap 30MPA/30MPW 016-071 (ComfortLink, UPC Open BACnet option) 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 AquaSnap 30MPA/30MPW 016-071 (ComfortLink, UPC Open BACnet option)

How many BACnet points does the Carrier AquaSnap 30MPA/30MPW 016-071 (ComfortLink, UPC Open BACnet option) have?

This list has 126 BACnet objects: 71 analog values, 51 binary values, 4 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Carrier AquaSnap 30MPA/30MPW 016-071 (ComfortLink, UPC Open BACnet option) BACnet points are writable?

31 of the 126 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 AquaSnap 30MPA/30MPW 016-071 (ComfortLink, UPC Open BACnet option) BACnet documentation?

The source is AquaSnap 30MPA,MPW016-071 Liquid Chillers with Scroll Compressors and ComfortLink Controls - Controls, Start-Up, Operation, Service, and Troubleshooting (Appendix C, BACnet Communication Option, Table G Network Points List) (30MP-6T), revision 10-23, published free by Carrier at https://www.shareddocs.com/hvac/docs/1005/Public/0B/30MP-6T.pdf.

What are the minimum BACnet points to integrate the Carrier AquaSnap 30MPA/30MPW 016-071 (ComfortLink, UPC Open BACnet option)?

Start with BV 4 chil_s_s_1 (Network start/stop); BV 6 emstop_1 (Emergency stop command); AV 5 ctrl_pnt_1 (Control point (leaving fluid setpoint)); AV 2 dem_lim_1 (Demand limit, 0-100 %); AV 8 stat_1 (Control mode code); AV 31 cool_lwt_1 (Cooler leaving fluid temperature); AV 30 cool_ewt_1 (Cooler entering fluid temperature); AV 3 cap_t_1 (Percent total capacity); BV 59 alm_1 (Alarm state (normal/alarm)).

How do I enable BMS control of the Carrier AquaSnap 30MPA/30MPW 016-071 (ComfortLink, UPC Open BACnet option)?

Set the control method to CCN (Configuration > OPT2 > CTRL = 3) with the Enable/Off/Remote switch in Enable (or Remote with the contacts closed). The BMS then forces CHIL_S_S (BV 4) between Start and Stop; control mode reads 2 (Off CCN) or 6 (On CCN). Monitoring only does not need CTRL = 3.

How do I check these points on the real AquaSnap 30MPA/30MPW 016-071 (ComfortLink, UPC Open BACnet option)?

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

Source: AquaSnap 30MPA,MPW016-071 Liquid Chillers with Scroll Compressors and ComfortLink Controls - Controls, Start-Up, Operation, Service, and Troubleshooting (Appendix C, BACnet Communication Option, Table G Network Points List) · 30MP-6T · rev. 10-23. Object names, instances and units are reproduced as published; descriptions are our own.