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Water-to-water heat pump / reversible chiller controller · BACnet points list
WaterFurnace Reversible Chiller Water-to-Water Heat Pump (FX10) BACnet points list
Updated 28 October 2026
BACnet objects for WaterFurnace's dual-compressor reversible chiller water-to-water heat pumps running the FX10 DDC controller. The BAS reads load/source water and refrigerant temperatures, flow switches, compressor and alarm states, and stages the machine by writing Y1/Y2 compressor calls and the reversing valve (O) command. Two flash-backed values set the low-temperature limit adjustment and the compressor on-delay.
This page lists 33 BACnet objects for the WaterFurnace Reversible Chiller Water-to-Water Heat Pump (FX10) — 10 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from WaterFurnace’s own free documentation, linked below.
- Manufacturer
- WaterFurnace
- Model
- Reversible Chiller Water-to-Water Heat Pump (FX10)
- Equipment
- Water-to-water heat pump / reversible chiller controller
- Equipment type
- Chillers
- BACnet objects
- 33 (10 writable)
- Transport
- —
- Firmware
- Not stated
- Also known as
- PRODCWWE-06B, PRODCWWE-07B, PRODCWWE-08B, PRODCWWE
BMS integration notes: WaterFurnace Reversible Chiller Water-to-Water Heat Pump (FX10)
The BAS stages this machine directly: MO1/MO2 are the Y1/Y2 compressor calls and MO3 is the reversing valve (O) call. Read load and source water temperatures, flow switches and the alarm code to supervise it. The two configuration values (freeze setpoint adjust, compressor on-delay) are flash-backed and should be set once.
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 |
|---|---|---|---|
| MO 1 | Compr 1 Cmd (Y1) | Stage 1 compressor call | Write |
| MO 2 | Compr 2 Cmd (Y2) | Stage 2 compressor call | Write |
| MO 3 | Rev Valve Cmd (O) | Heating/cooling selection | Write |
| MO 4 | Alarm Reset | Reset manual-reset alarms | Write |
| MI 1 | Mode of Operation | Auto or shutdown status | Read |
| MI 2 | Compr 1 Cmd Status | Compressor 1 commanded on/off | Read |
| AI 3 | Enter Load Temp | Entering load water temperature | Read |
| AI 4 | Leaving Load Temp | Leaving load water temperature | Read |
| AI 14 | Alarms | Active alarm code | Read |
Enable & remote start
The sheet has no separate enable or occupancy point. The BAS controls the unit with the MO1/MO2 compressor calls and the MO3 reversing-valve call.
Watch out for
- AV/MV points are stored in flash (about 2,000,000 writes); write them only manually or by schedule, never from automatic reset logic.
- Output points (AO/MO) are volatile and go back to uncommanded after a power cycle, so rewrite them after power is restored.
- If the BAS shows 254 as uncommanded instead of 255, every multistate value is one lower (0=Off, 1=On).
- With lead/lag enabled (factory default), a Y1 or Y2 call starts whichever compressor has been off longest.
- AV1 Frz Setpt Adj only takes effect after the control board jumpers are removed.
WaterFurnace Reversible Chiller Water-to-Water Heat Pump (FX10) 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 | |||||
|---|---|---|---|---|---|---|
| AI | 1 | Source Frz 1 | Refrigerant temp entering source heat exchanger, comp 1 | Read | ||
| AI | 2 | Load Frz 1 | Refrigerant temp entering load heat exchanger, comp 1 | Read | ||
| AImin | 3 | Enter Load Temp | Entering load water temperature | Read | ||
| AImin | 4 | Leaving Load Temp | Leaving load water temperature | Read | ||
| AI | 5 | Enter Source Temp | Entering source water temperature | Read | ||
| AI | 6 | Leaving Source Temp | Leaving source water temperature | Read | ||
| AI | 7 | Source Frz Setpt | Source heat exchanger low temperature limit | Read | ||
| AI | 8 | Load Frz Setpt | Load heat exchanger low temperature limit | Read | ||
| AI | 9 | Comp1 Status Output | Commanded compressor 1 status | Read | 1=Off; 2=On | |
| AI | 10 | Alarm Status Output | Commanded alarm output status | Read | 1=Off; 2=On | |
| AI | 11 | Comp2 Status Output | Commanded compressor 2 status | Read | 1=Off; 2=On | |
| AI | 12 | Source Frz 2 | Refrigerant temp entering source heat exchanger, comp 2 | Read | ||
| AI | 13 | Load Frz 2 | Refrigerant temp entering load heat exchanger, comp 2 | Read | ||
| AImin | 14 | Alarms | Active alarm code (see alarm table) | Read | 0=No alarms; 1=Load Flow Switch; 2=Comp 1 Low Suction Pressure; 3=Source Low Temp Comp 1; 4=Source Predictive Freeze Comp 1; 5=Source Flow Switch; 6=High Pressure Comp 1; 7=Bad Source Sensor Comp 1; 8=Bad Load Sensor Comp 1; 9=Comp 2 Low Suction Pressure; 10=Source Low Temp Comp 2; 11=Bad Source Sensor Comp 2; 12=Source Predictive Freeze Comp 2; 13=Bad Load Sensor Comp 2; 14=High Pressure Comp 2; 15=Comp 1 Start Failure; 16=Low Temp Cutoff Comp 1; 17=Low Temp Cutoff Comp 2; 18=Comp 2 Start Failure; 19=Load Low Temp Comp 1; 20=Load Predictive Freeze Comp 1; 21=Load Low Temp Comp 2; 22=Load Predictive Freeze Comp 2; 23=Comp 1 Charge Loss; 24=Comp 2 Charge Loss | |
| AV | 1 | Frz Setpt Adj | Low temp limit adjustment (board jumpers removed); flash | Write | ||
| AV | 2 | Compressor On Delay | Compressor on-delay timer, default 90 s; flash | Write | ||
| MImin | 1 | Mode of Operation | Current operating status | Read | 1=Auto; 7=Shutdown | |
| MImin | 2 | Compr 1 Cmd Status | Commanded compressor 1 status | Read | 1=Off; 2=On | |
| MI | 3 | Compr 2 Cmd Status | Commanded compressor 2 status | Read | 1=Off; 2=On | |
| MI | 4 | Rev Valve Status | Commanded reversing valve position | Read | 1=Heating; 2=Cooling | |
| MI | 5 | Acc 1 Status | ACC 1 (X1) output state | Read | 1=Off; 2=On | |
| MI | 6 | Stage 1 Alarm | Compressor 1 alarm status | Read | 1=Off; 2=Alarm | |
| MI | 7 | Stage 2 Alarm | Compressor 2 alarm status | Read | 1=Off; 2=Alarm | |
| MI | 8 | Load Flow Switch | Load flow switch input | Read | 1=Open; 2=Closed | |
| MI | 9 | Source Flow Switch | Source flow switch input | Read | 1=Open; 2=Closed | |
| MOmin | 1 | Compr 1 Cmd (Y1) | Network compressor call (thermostat Y1) | Write | 1=Off; 2=On | |
| MOmin | 2 | Compr 2 Cmd (Y2) | Network compressor call (thermostat Y2) | Write | 1=Off; 2=On | |
| MOmin | 3 | Rev Valve Cmd (O) | Network reversing valve call (thermostat O) | Write | 1=Heating; 2=Cooling | |
| MOmin | 4 | Alarm Reset | Reset manual-reset alarms: write 2, then back to 1 | Write | ||
| MO | 5 | nviEXPBO1 | Network control of expansion board output 1 | Write | 1=Off; 2=On | |
| MO | 6 | nviEXPO2 | Network control of expansion board output 2 | Write | 1=Off; 2=On | |
| MO | 7 | nviEXPO7 | Network control of expansion board output 7 | Write | 1=Off; 2=On | |
| MO | 8 | nviEXPO8 | Network control of expansion board output 8 | Write | 1=Off; 2=On |
No points match these filters.
Integration notes
- Output-type points are volatile and fall back to uncommanded after a power cycle; unlimited writes.
- Value-type points (AV/MV) are stored in flash (about 2,000,000 write life); never write them from automatic reset logic.
- Multistate numbers assume the BAS shows 255 as uncommanded; if yours shows 254, every state number is one lower (0=Off, 1=On).
- No engineering units are printed in the source; temperatures are presumably degrees F.
- With lead/lag enabled (factory default) a Y1 or Y2 call starts whichever compressor has been off longest; with it disabled Y1 starts compressor 1 and Y2 compressor 2.
- AI9-AI11 report on/off states as analog inputs using 1=Off, 2=On.
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 Reversible Chiller Water-to-Water Heat Pump (FX10) 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 WaterFurnace Reversible Chiller Water-to-Water Heat Pump (FX10)
How many BACnet points does the WaterFurnace Reversible Chiller Water-to-Water Heat Pump (FX10) have?
This list has 33 BACnet objects: 14 analog inputs, 2 analog values, 9 multi-state inputs, 8 multi-state outputs. The exact set on a given unit depends on its firmware, installed options and configuration.
Which WaterFurnace Reversible Chiller Water-to-Water Heat Pump (FX10) BACnet points are writable?
10 of the 33 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 WaterFurnace Reversible Chiller Water-to-Water Heat Pump (FX10) BACnet documentation?
The source is BACnet Points for Reversible Chiller Water-to-Water Heat Pumps Utilizing the FX10 Controller (PRODCWWE-06B-07B-08B), revision 2013-02, published free by WaterFurnace at https://www.waterfurnace.com/downloads/ddc/BACnet-Resources/BACnet-points-pdfs/PRODCWWE-06B-07B-08B.pdf.
What are the minimum BACnet points to integrate the WaterFurnace Reversible Chiller Water-to-Water Heat Pump (FX10)?
Start with MO 1 Compr 1 Cmd (Y1) (Stage 1 compressor call); MO 2 Compr 2 Cmd (Y2) (Stage 2 compressor call); MO 3 Rev Valve Cmd (O) (Heating/cooling selection); MO 4 Alarm Reset (Reset manual-reset alarms); MI 1 Mode of Operation (Auto or shutdown status); MI 2 Compr 1 Cmd Status (Compressor 1 commanded on/off); AI 3 Enter Load Temp (Entering load water temperature); AI 4 Leaving Load Temp (Leaving load water temperature); AI 14 Alarms (Active alarm code).
How do I enable BMS control of the WaterFurnace Reversible Chiller Water-to-Water Heat Pump (FX10)?
The sheet has no separate enable or occupancy point. The BAS controls the unit with the MO1/MO2 compressor calls and the MO3 reversing-valve call.
How do I check these points on the real Reversible Chiller Water-to-Water Heat Pump (FX10)?
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 WaterFurnace BACnet points lists
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WaterFurnace Aurora HydroLink for NXW/SKW Water-to-Water Heat Pumps
WaterFurnace NXW and SKW dual-scroll water-to-water heat pumps (including header rack arrangements) with the Aurora HydroLink controller.
Also known as: PL2500EW, HydroLink, NXW, SKW, WCHDM, HYDWWB01 - Rooftop unit controller (water-source, with economizer)
WaterFurnace Aurora UPC, Dual Compressor Rooftop Unit with Economizer
WaterFurnace dual-compressor water-source rooftop units with an economizer, Aurora controls and the Aurora UPC.
Also known as: PL1250EW, Aurora UPC rooftop economizer, Aurora Universal Protocol Converter - Water-source heat pump controller
WaterFurnace Aurora UPC, Dual Compressor Water-Source Heat Pump
WaterFurnace dual-compressor water-to-air heat pumps with two Aurora Base Controllers (ABC A and B) and the Aurora UPC.
Also known as: PL1500EW, Aurora Universal Protocol Converter, Aurora UPC dual compressor - Rooftop unit controller (water-source, with economizer)
WaterFurnace Aurora UPC, Single Compressor Rooftop Unit with Economizer
WaterFurnace single-compressor water-source rooftop units with an economizer, Aurora controls and the Aurora UPC.
Also known as: PL1250EW, Aurora UPC rooftop economizer, Aurora Universal Protocol Converter - Water-source heat pump controller
WaterFurnace Aurora UPC, Single Compressor Water-Source Heat Pump
WaterFurnace single-compressor water-to-air heat pumps with the Aurora controls and the Aurora UPC protocol converter.
Also known as: AG1569EW, Aurora Universal Protocol Converter, Aurora UPC, UPCSWASTD01-01 - Water-source heat pump controller
WaterFurnace Aurora UPC, Variable Speed Water-Source Heat Pump
WaterFurnace variable speed water-to-air heat pumps with Aurora controls and the Aurora UPC.
Also known as: PL1700EW, Aurora Universal Protocol Converter, Aurora UPC variable speed - Water-source heat pump controller
WaterFurnace Dual Compressor Water-to-Air Heat Pump (FX10)
WaterFurnace commercial dual-compressor water-to-air heat pumps fitted with the FX10 DDC controller.
Also known as: PRODCWA-05, PRODCWA, WaterFurnace FX10 - Water-to-water heat pump controller
WaterFurnace Envision Single Compressor Water-to-Water Heat Pump (FX10)
WaterFurnace Envision single-compressor water-to-water heat pumps with the FX10 DDC controller.
Also known as: PROSSWWE-01, PROSSWWE, Envision Water-to-Water, WaterFurnace FX10 - Water-source heat pump controller
WaterFurnace Envision Water-to-Air Heat Pump, 1-6 Ton
WaterFurnace Envision 1 to 6 ton water-to-air heat pumps with the DDC controller option.
Also known as: Envision BACnet Variables, Envision BACnet Variables with BI, Envision 1-6 Ton - Water-source heat pump controller
WaterFurnace Single Compressor Water-to-Air Heat Pump (FX10)
WaterFurnace single-compressor water-to-air heat pumps without hot gas reheat, fitted with the FX10 DDC controller.
Also known as: PROFXENV-00, PROFXENV, Envision FX10, WaterFurnace FX10 - Water-source heat pump controller
WaterFurnace Single Compressor Water-to-Air Heat Pump with Hot Gas Reheat (FX10)
WaterFurnace single-compressor water-to-air heat pumps with hot gas reheat and the FX10 DDC controller.
Also known as: PROFXENV-RH-00, PROFXENV-RH, Envision hot gas reheat, WaterFurnace FX10 - Water-to-water heat pump controller
WaterFurnace Versatec Dual Compressor Water-to-Water Heat Pump (FX10)
WaterFurnace Versatec dual-compressor water-to-water heat pumps with the FX10 DDC controller and expansion board.
Also known as: PRODCWW-02, PRODCWW, Versatec Dual Compressor, WaterFurnace FX10 - Water-to-water heat pump controller
WaterFurnace Versatec Single Compressor Water-to-Water Heat Pump (FX10)
WaterFurnace Versatec single-compressor water-to-water heat pumps with the FX10 DDC controller.
Also known as: PROSSWW-03, PROSSWW, Versatec Water-to-Water, WaterFurnace FX10
Source: BACnet Points for Reversible Chiller Water-to-Water Heat Pumps Utilizing the FX10 Controller · PRODCWWE-06B-07B-08B · rev. 2013-02. Object names, instances and units are reproduced as published; descriptions are our own.