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WaterFurnace Single Compressor Water-to-Air Heat Pump with Hot Gas Reheat (FX10) BACnet points list
Updated 28 October 2026
BACnet objects for WaterFurnace's single-compressor water-to-air heat pump with hot gas reheat on the FX10 controller. The BAS can command occupancy and let the FX10 hold its setpoints, or send G, Y1, Y2 and O calls directly. Space temperature and humidity can be overridden from the network, and reheat is driven by a dehumidify setpoint or a network dehumidistat command.
This page lists 55 BACnet objects for the WaterFurnace Single Compressor Water-to-Air Heat Pump with Hot Gas Reheat (FX10) — 32 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
- Single Compressor Water-to-Air Heat Pump with Hot Gas Reheat (FX10)
- Equipment
- Water-source heat pump controller
- Equipment type
- Heat pumps
- BACnet objects
- 55 (32 writable)
- Transport
- —
- Firmware
- Not stated
- Also known as
- PROFXENV-RH-00, PROFXENV-RH, Envision hot gas reheat, WaterFurnace FX10
BMS integration notes: WaterFurnace Single Compressor Water-to-Air Heat Pump with Hot Gas Reheat (FX10)
The BAS can run this heat pump in two ways: command occupancy (MO1) and let the FX10 hold its occupied/unoccupied setpoints, or act as the thermostat and send fan, Y1, Y2 and O calls directly (MO2-MO5). Space temperature and humidity can be overridden on AO4/AO5, and MO6 forces an emergency shutdown. Keep frequent writes on the volatile AO/MO points, not the flash-backed AV/MV setpoints.
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 | Occupancy Command | Occupied/unoccupied/bypass/standby command | Write |
| MO 6 | Emergency Override | Network emergency shutdown | Write |
| AV 1 | Occupied Cool | Occupied cooling setpoint (flash; write rarely) | Write |
| AV 3 | Occupied Heat | Occupied heating setpoint (flash; write rarely) | Write |
| MO 7 | Alarm Reset | Reset manual-reset alarms | Write |
| MI 2 | Mode | Current unit mode (auto, heat, cool, shutdown...) | Read |
| MI 4 | Comp Cmd Status | Compressor commanded on/off | Read |
| AI 1 | Space Temp | Space sensor temperature (terminals RS/AIC) | Read |
| AI 2 | Discharge Air | Discharge (supply) air temperature | Read |
| AI 9 | Alarms Enumerated | Active alarm code | Read |
Enable & remote start
The sheet has no separate BAS-enable point. MO6 Emergency Override puts the unit in shutdown (5) or back to normal (1). MO2-MO5 let the BAS send fan, compressor and reversing-valve calls directly.
Sensors & values from the BMS
AO4 Space Temp Ovrd and AO5 Space Humidity Ovrd override the connected sensors from the network. They are volatile outputs, so they revert to uncommanded after a power cycle. MO9 Dehum Cmd stands in for a dehumidistat input.
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).
- To set ECM fan speeds from the network, first write MV1-MV3 to On (2), then write the speed percentage to AV11-AV13.
- MV4 Reheat Ena/Dis set to Off stops reheat from ever running.
- Alarm Reset needs a write of 2 followed by 1.
WaterFurnace Single Compressor Water-to-Air Heat Pump with Hot Gas Reheat (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 | |||||
|---|---|---|---|---|---|---|
| AImin | 1 | Space Temp | Space sensor reading (terminals RS/AIC) | Read | ||
| AImin | 2 | Discharge Air | Discharge air sensor (field mounted unless factory special) | Read | ||
| AI | 3 | Effective Clg Setpt | Effective cooling setpoint | Read | ||
| AI | 4 | Effective Hgt Setpt | Effective heating setpoint | Read | ||
| AI | 5 | nvoHumidity | Space humidity, if a sensor is connected | Read | ||
| AI | 6 | Water Coil Temp | Refrigerant temperature near the coaxial heat exchanger | Read | ||
| AI | 7 | Low Temp Limit | Water coil low temperature limit | Read | ||
| AI | 8 | ECM Cmd Output | Commanded ECM blower speed | % | Read | |
| AImin | 9 | Alarms Enumerated | Active alarm code (0-9, see alarm table) | Read | 0=No Alarm; 1=Condensate Detected; 2=Compressor High Discharge Pressure; 3=Compressor Low Suction Pressure; 4=Freeze Protection; 8=Faulty Freeze Sensor Alarm; 9=Loss of Charge | |
| AI | 10 | AO2 Value | Commanded value of analog output 2 override | Read | ||
| AO | 1 | Space Setpoint | Midpoint setpoint; moves heating and cooling setpoints together | Write | ||
| AO | 2 | ECM Fan Override | Network control of ECM blower speed | Write | ||
| AO | 3 | AO2 Override | Network control of analog output 2 | Write | ||
| AO | 4 | Space Temp Ovrd | Network override of the space temperature reading | Write | ||
| AO | 5 | Space Humidity Ovrd | Network override of the space humidity reading | Write | ||
| AVmin | 1 | Occupied Cool | Occupied cooling setpoint (flash) | Write | ||
| AV | 2 | Unoccupied Cool | Unoccupied cooling setpoint (flash) | Write | ||
| AVmin | 3 | Occupied Heat | Occupied heating setpoint (flash) | Write | ||
| AV | 4 | Unoccupied Heat | Unoccupied heating setpoint (flash) | Write | ||
| AV | 5 | Temporary Occ Time | Temporary occupancy duration, default 120 min | min | Write | |
| AV | 6 | Remote Setpt Span | Setpoint shift span of the sensor knob | Write | ||
| AV | 7 | Remote Setpt Bias | Calibrates the setpoint shift center point | Write | ||
| AV | 8 | Space Temp Offset | Calibration offset for the zone sensor | Write | ||
| AV | 9 | Dehumidify Setpt | Dehumidification setpoint for reheat operation | Write | ||
| AV | 10 | Low Temp Limit Adjust | Water coil low temperature limit for freeze detection | Write | ||
| AV | 11 | Fan Only | ECM blower fan-only speed (needs MV1 on) | % | Write | |
| AV | 12 | Fan Medium | ECM blower medium speed (needs MV2 on) | % | Write | |
| AV | 13 | Fan High | ECM blower high speed (needs MV3 on) | % | Write | |
| MI | 1 | Effective Occupancy | Current occupancy status | Read | 1=Occupied; 2=Unoccupied; 3=Bypass (temporary occupancy) | |
| MImin | 2 | Mode | Current unit mode | Read | 1=Auto; 2=Heat; 3=Morning Warm-up; 4=Cool; 5=Night Purge; 6=Pre Cool; 7=Off (Shutdown); 8=Test; 9=Emergency Heat | |
| MI | 3 | Fan Cmd Status | Commanded fan status | Read | 1=Off; 2=On | |
| MImin | 4 | Comp Cmd Status | Commanded compressor status | Read | 1=Off; 2=On | |
| MI | 5 | Comp Hi Capacity Cmd | Commanded high-capacity compressor valve | Read | 1=Off; 2=On | |
| MI | 6 | Reversing Valve | Commanded reversing valve position | Read | 1=Heating; 2=Cooling | |
| MI | 7 | Accessory 1 Output | ACC 1 (X1) output state | Read | 1=Off; 2=On | |
| MI | 8 | Accessory 2 Output | ACC 2 (X2) output state | Read | 1=Off; 2=On | |
| MI | 9 | Digital Input 12 | DI12 state; needs field current switch or factory special | Read | 1=Off; 2=On | |
| MI | 10 | Alarm Status | Alarm output state | Read | 1=Off; 2=On | |
| MI | 11 | BO5 Output | BO5 output state | Read | 1=Off; 2=On | |
| MI | 12 | Reheat Output | BO9 (reheat) output state | Read | 1=Off; 2=On | |
| MI | 13 | Dehumidistat Status | Dehumidistat input state | Read | 1=Open; 2=Closed | |
| MOmin | 1 | Occupancy Command | Network occupancy command | Write | 1=Occupied; 2=Unoccupied; 3=Bypass; 4=Standby | |
| MO | 2 | Fan Command | Network fan call (thermostat G) | Write | 1=Off; 2=On | |
| MO | 3 | Compressor Cmd(Y1) | Network compressor call (thermostat Y1) | Write | 1=Off; 2=On | |
| MO | 4 | Compressor Cmd(Y2) | Network compressor call (thermostat Y2) | Write | 1=Off; 2=On | |
| MO | 5 | Reversing Vlv Cmd | Network reversing valve call (thermostat O) | Write | 1=Heat; 2=Cooling | |
| MOmin | 6 | Emergency Override | Network emergency shutdown | Write | 1=Normal; 5=Shutdown | |
| MOmin | 7 | Alarm Reset | Reset manual-reset alarms: write 2, then back to 1 | Write | ||
| MO | 8 | Emergency Heat BO5 | Network control of binary output 5 | Write | 1=Off; 2=On | |
| MO | 9 | Dehum Cmd | Network control of the dehumidistat input | Write | 1=Off; 2=On | |
| MV | 1 | SW1 | ECM switch 1 on; AV11 then sets fan-only speed | Write | 1=Off; 2=On | |
| MV | 2 | SW2 | ECM switch 2 on; AV12 then sets medium speed | Write | 1=Off; 2=On | |
| MV | 3 | SW3 | ECM switch 3 on; AV13 then sets high speed | Write | 1=Off; 2=On | |
| MV | 4 | Reheat Ena/Dis | Enable or disable reheat logic | Write | 1=Off; 2=On | |
| MV | 5 | Unocc Setpt Ena/Dis | Enable unoccupied humidity setpoint (default disabled) | 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).
- Units are mostly not printed; AV6 Remote Setpt Span gives its default as 2.7 C, other temperatures are presumably degrees F.
- Alarm codes 5-7 are not listed in the alarm table.
- The sheet does not state the BACnet transport.
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 Single Compressor Water-to-Air Heat Pump with Hot Gas Reheat (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 Single Compressor Water-to-Air Heat Pump with Hot Gas Reheat (FX10)
How many BACnet points does the WaterFurnace Single Compressor Water-to-Air Heat Pump with Hot Gas Reheat (FX10) have?
This list has 55 BACnet objects: 10 analog inputs, 5 analog outputs, 13 analog values, 13 multi-state inputs, 9 multi-state outputs, 5 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which WaterFurnace Single Compressor Water-to-Air Heat Pump with Hot Gas Reheat (FX10) BACnet points are writable?
32 of the 55 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 Single Compressor Water-to-Air Heat Pump with Hot Gas Reheat (FX10) BACnet documentation?
The source is BACnet Points for Single Compressor Water-to-Air Heat Pumps With Hot Gas Reheat Utilizing the FX10 Controller (PROFXENV-RH-00), revision 2013-02, published free by WaterFurnace at https://www.waterfurnace.com/downloads/ddc/BACnet-Resources/BACnet-points-pdfs/PROFXENV-RH-00.pdf.
What are the minimum BACnet points to integrate the WaterFurnace Single Compressor Water-to-Air Heat Pump with Hot Gas Reheat (FX10)?
Start with MO 1 Occupancy Command (Occupied/unoccupied/bypass/standby command); MO 6 Emergency Override (Network emergency shutdown); AV 1 Occupied Cool (Occupied cooling setpoint (flash; write rarely)); AV 3 Occupied Heat (Occupied heating setpoint (flash; write rarely)); MO 7 Alarm Reset (Reset manual-reset alarms); MI 2 Mode (Current unit mode (auto, heat, cool, shutdown...)); MI 4 Comp Cmd Status (Compressor commanded on/off); AI 1 Space Temp (Space sensor temperature (terminals RS/AIC)); AI 2 Discharge Air (Discharge (supply) air temperature); AI 9 Alarms Enumerated (Active alarm code).
How do I enable BMS control of the WaterFurnace Single Compressor Water-to-Air Heat Pump with Hot Gas Reheat (FX10)?
The sheet has no separate BAS-enable point. MO6 Emergency Override puts the unit in shutdown (5) or back to normal (1). MO2-MO5 let the BAS send fan, compressor and reversing-valve calls directly.
Can the BMS supply sensor values to the WaterFurnace Single Compressor Water-to-Air Heat Pump with Hot Gas Reheat (FX10)?
AO4 Space Temp Ovrd and AO5 Space Humidity Ovrd override the connected sensors from the network. They are volatile outputs, so they revert to uncommanded after a power cycle. MO9 Dehum Cmd stands in for a dehumidistat input.
How do I check these points on the real Single Compressor Water-to-Air Heat Pump with Hot Gas Reheat (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.
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Source: BACnet Points for Single Compressor Water-to-Air Heat Pumps With Hot Gas Reheat Utilizing the FX10 Controller · PROFXENV-RH-00 · rev. 2013-02. Object names, instances and units are reproduced as published; descriptions are our own.