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Air handling unit controller · BACnet points list

FläktGroup ISYteq 4.0 AHU controls (SW 1.3.0.2) BACnet points list

Updated 12 November 2026

Short answer

ISYteq 4.0 is FläktGroup's AHU control system with BACnet IP / MS/TP (B-BC) and Modbus always included. The full BMS communication list covers unit enables and operation mode, temperature, humidity, air quality, fan, damper and heat-recovery setpoints and control values, sensors, outputs, equipment faults, collective alarms and a BMS heartbeat pair. Which objects a unit actually has depends on its configuration; FläktGroup's four example sheets (rotary, plate, ReCooler HP, rotary with active mixing) are subsets of this list.

This page lists 365 BACnet objects for the FläktGroup ISYteq 4.0 AHU controls (SW 1.3.0.2) — 47 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from FläktGroup’s own free documentation, linked below.

Manufacturer
FläktGroup
Model
ISYteq 4.0 AHU controls (SW 1.3.0.2)
Equipment
Air handling unit controller
Equipment type
Rooftop units, AHUs & DOAS
BACnet objects
365 (47 writable)
Transport
BACnet IP, BACnet MS/TP
Firmware
Software version 1.3.0.2
Also known as
ISYteq 4.0, ISYteq 4, Flakt ISYteq BMS list, DC_10838, BMS Communication list 1.3.0.2
Source document
ISYteq 4.0 BMS Communication list SW version 1.3.0.2 (Full BMS communication list)
Download CSV 365 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 FläktGroup’s current documentation and the live device before use. Not official FläktGroup information. Terms of use.

BMS integration notes: FläktGroup ISYteq 4.0 AHU controls (SW 1.3.0.2)

Integration in brief

Set the BACnet datalink in the HMI (log in as Admin), export the EDE file, then command the unit with MV 3939011 Unit Operation Mode and the temperature setpoint. Keep the BMS heartbeat objects toggling if the unit uses them, and read temperatures, fan status and the collective alarm outputs.

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
MV 3939011Unit Operation ModeUnit mode command: 1 Automatic, 3 Low, 4 High speed...Write
AV 3030071Temperature Control SetpointTemperature setpoint, °CWrite
BV 3939042BMS Heartbeat WriteBMS keep-alive written by the BMSWrite
MV 3939091Unit Operation Mode ActualActual operating profileRead
BO 101011Supply Air Fan 1 OnSupply fan 1 runningRead
AI 106011Supply Air Temperature SensorSupply air temperature, °CRead
AI 206011Extract Air Temperature SensorExtract air temperature, °CRead
AI 306011Outdoor Air Temperature SensorOutdoor air temperature, °CRead
BO 3939101Alarm Collective A/B On/OffAny collective alarmRead
BO 3939031Alarm Collected Active ACollective A alarm activeRead

Enable & remote start

MV 3939011 Unit Operation Mode (R/W) selects Automatic, Room Frost Protection, Low/High Speed, Free Profile 1/2 or Night Purge. BV 3030081 Unit Enable Via Temperature Control and the humidity / air-quality equivalents can also enable the unit. The integration manual's optional High priority function (Operating data > 8.8 BMS) lets BMS values override user inputs and profiles.

Heartbeat & communication loss

BV 3939041 BMS Heartbeat Read and BV 3939042 BMS Heartbeat Write are described only as objects to check that the BMS is alive; the list gives no timeout or fallback behaviour.

Network setup

Watch out for

FläktGroup ISYteq 4.0 AHU controls (SW 1.3.0.2) 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.

365 of 365 shown
Type
Multi-stateOther
Access
Show
FläktGroup ISYteq 4.0 AHU controls (SW 1.3.0.2) BACnet Points List
DescriptionStates
BV3030081Unit Enable Via Temperature ControlEnable unit via Temperature controlWriteInactive=Off; Active=On
BV3030111Temperature Control Relative SetpointRelative setpointWriteInactive=Off; Active=On
BV3939181Change Over SetpointChange over priorityWriteInactive=Winter; Active=Summer
BV3939101Unit Operation Mode Internal Bypass 1Internal bypassWriteInactive=Off; Active=On
BV3939102Unit Operation Mode Internal Bypass 1 Reset EnableInternal bypass stoppWriteInactive=Off; Active=On
BV3939041BMS Heartbeat ReadObject to check the Bms is alive or notWriteInactive=Off; Active=On
BVmin3939042BMS Heartbeat WriteObject to check the Bms is alive or notWriteInactive=Off; Active=On
BV106011Supply Air Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV106031Supply Air Fan Nozzle Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV106041Supply Air Heater 1 Inlet Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV106051Supply Air Heater 1 Outlet Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV106081Supply Air Cooler 1 Inlet Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV106091Supply Air Cooler 1 Outlet Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV206011Extract Air Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV206071Extract Air Fan Nozzle Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV306011Outdoor Air Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV306021Outdoor Air Filter Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV406011Exhaust Air Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV706011Room Air Temperature Sensor 1 FaultDisplay faultReadInactive=Ok; Active=Fault
BV806011Energy Recovery System 1 Inlet Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV806021Energy Recovery System 1 Outlet Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV806031Supply Air Temperature Sensor Behind Energy Recovery System FaultDisplay faultReadInactive=Ok; Active=Fault
BV806041Exhaust Air Temperature Sensor Behind Energy Recovery System FaultDisplay faultReadInactive=Ok; Active=Fault
BV806051Energy Recovery System Icing Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV2006011Outdoor Air Temperature Facade Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV2106011Evaporator 1 Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV106121Supply Air Heater 1 Inflow Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV106131Supply Air Heater 1 Outflow Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV106181Supply Air Cooler 1 Inflow Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV106191Supply Air Cooler 1 Outflow Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV2106021Dx Inflow Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV2106031Dx Outflow Temperature Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV208011Extract Air Quality Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV308011Outdoor Air Quality Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV308021ODA Air Quality CO Sensor Fault BVDisplay faultReadInactive=Ok; Active=Fault
BV109011Supply Air Filter Pressure Sensor 1 FaultDisplay faultReadInactive=Ok; Active=Fault
BV109021Supply Air Filter Pressure Sensor 2 FaultDisplay faultReadInactive=Ok; Active=Fault
BV109031Supply Air Nozzle Pressure Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV109041Supply Air Duct Pressure Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV209011Extract Air Filter Pressure Sensor 1 FaultDisplay faultReadInactive=Ok; Active=Fault
BV209021Extract Air Filter Pressure Sensor 2 FaultDisplay faultReadInactive=Ok; Active=Fault
BV209031Extract Air Duct Pressure Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV209041Extract Air Nozzle Pressure Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV309011Outdoor Air Filter Pressure Sensor 1 FaultDisplay faultReadInactive=Ok; Active=Fault
BV309021Outdoor Air Filter Pressure Sensor 2 FaultDisplay faultReadInactive=Ok; Active=Fault
BV309031Outdoor Air Bypass Pressure Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV409011Exhaust Air Bypass Pressure Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV809011Energy Recovery System Pressure Sensor FaultDisplay faultReadInactive=Ok; Active=Fault
BV209013Extract Air Filter Pressure Sensor 1 Pre-Maintenance FaultDisplay faultReadInactive=Ok; Active=Fault
BV209022Extract Air Filter Pressure Sensor 2 Pre-Maintenance FaultDisplay faultReadInactive=Ok; Active=Fault
BV309013Outdoor Air Filter Pressure Sensor 1 Pre-Maintenance FaultDisplay faultReadInactive=Ok; Active=Fault
BV309022Outdoor AirFilter Pressure Sensor 2 Pre-Maintenance FaultDisplay faultReadInactive=Ok; Active=Fault
BV109013Supply Air Filter Pressure Sensor 1 Pre-Maintenance FaultDisplay faultReadInactive=Ok; Active=Fault
BV109022Supply Air Filter Pressure Sensor 2 Pre-Maintenance FaultDisplay faultReadInactive=Ok; Active=Fault
BV3030015Temperature Control Start Heating Loop FaultEnable/Disable monitoringReadInactive=Enable; Active=Fault
BV3030023Temperature Control Start Cooling Loop FaultEnable/Disable monitoringReadInactive=Enable; Active=Fault
BV3030034Temperature Control Cascade Heating Loop FaultEnable/Disable monitoringReadInactive=Enable; Active=Fault
BV3030035Temperature Control Cascade Cooling Loop FaultEnable/Disable monitoringReadInactive=Enable; Active=Fault
BV3030152Temperature Control Supply Air Minimum Loop FaultEnable/Disable monitoringReadInactive=Enable; Active=Fault
BV3030163Temperature Control Supply Air Maximum Loop FaultEnable/Disable monitoringReadInactive=Enable; Active=Fault
BV2929044Damper Outdoor Air Amount Adaption/Balancing Loop FaultEnable/Disable monitoringReadInactive=Ok; Active=Fault
BV133013Supply Air Fan Control Volumeflow Loop FaultEnable/Disable monitoringReadInactive=Enable; Active=Fault
BV133023Supply Air Fan Control Pressure Loop FaultEnable/Disable monitoringReadInactive=Enable; Active=Fault
BV233013Extract Air Fan Control Volumeflow Loop FaultEnable/Disable monitoringReadInactive=Enable; Active=Fault
BV233023Extract Air Fan Control Pressure Loop FaultEnable/Disable monitoringReadInactive=Enable; Active=Fault
BV3939161Unit OnUnit on statusReadInactive=Off; Active=On
BV830031Energy Recovery System Control Anti Icing FaultDisplay faultReadInactive=Ok; Active=Fault
BV3939171Warmup FaultDisplay faultReadInactive=Ok; Active=Fault
BV3030012Value Monitoring FaultDisplay faultReadInactive=Ok; Active=Fault
BV3030013Value Tripping with Acknowledge Monitoring FaultDisplay faultReadInactive=Ok; Active=Fault
BV3030011Value Monitoring Tripping FaultDisplay faultReadInactive=Ok; Active=Fault
BOmin3939031Alarm Collected Active AOutput will be set, if a new alarm appearsReadInactive=Off; Active=On
BO3939041Alarm Collected Active BOutput will be set, if a new alarm appearsReadInactive=Off; Active=On
BO3939011Alarm New AOutput will be set, if a new alarm appearsReadInactive=Off; Active=On
BO3939021Alarm New BOutput will be set, if a new alarm appearsReadInactive=Off; Active=On
BV4141012Fire Active Shutdown Unit EnableFire alarmReadInactive=Ok; Active=Alarm
BO3939161Heating RequestOutput will be set, if heating is requestedReadInactive=Off; Active=On
BO3939171Cooling RequestOutput will be set, if cooling is requestedReadInactive=Off; Active=On
BO4141011Fire Alarm IndicationAlarm indicationReadInactive=Ok; Active=Fault
BO3939091Alarm Collective New A/B On/OffCollective new alarmsReadInactive=Off; Active=On
BOmin3939101Alarm Collective A/B On/OffCollective alarmsReadInactive=Off; Active=On
BO3939211Night Purge On/OffShows when night purge is activeReadInactive=Off; Active=On
BV3939022Unit Operating Hours Maintenance FaultUnit Maintenance requiredReadInactive=Off; Active=On
BI3939051Unit Operation Mode External Bypass 1 InputUnit bypass low prioReadInactive=Off; Active=On
BI3939061Unit Operation Mode External Bypass 2 InputUnit bypass high prio operationReadInactive=Off; Active=On
BI3939071Unit Operation Mode External Profile 1 InputUnit operation mode external profile lowReadInactive=Off; Active=On
BI3939081Unit Operation Mode External Profile 2 InputUnit operation mode external profile highReadInactive=Off; Active=On
BI3939121Unit Main On External InputEnabling unit from externReadInactive=Off; Active=On
BI3939221Unit LightUnit lightReadInactive=Off; Active=On
BV393261Alarm External Analog Input 1 FaultDisplay faultReadInactive=Ok; Active=Fault
BI3939191Alarm External Input 1External Input AlarmReadInactive=Off; Active=On
BI3939201Alarm External Input 2External Input AlarmReadInactive=Off; Active=On
BV3939191Alarm External Input 1 FaultDisplay faultReadInactive=Ok; Active=Fault
BV3939201Alarm External Input 2 FaultDisplay faultReadInactive=Ok; Active=Fault
BI4141011Fire Detector Input 1Input for fire alarmReadInactive=Fire; Active=Ok
BI4141021Fire Detector Input 2Input for fire alarmReadInactive=Fire; Active=Ok
BI4141031Fire External Stop InputInput for fire alarmReadInactive=Off; Active=On
BI3939181Change Over InputWinter = 0, Summer = 1ReadInactive=Winter; Active=Summer
BI3939141Repair SwitchSwitch to disconnect the fans from power supplyReadInactive=Off; Active=On
BI3939231Phase Monitoring BIPhase monitor of the 3x400V supply lineReadInactive=Off; Active=On
BI133031Supply Air Electric Heater Airflow MonitoringInput for faultReadInactive=Fault; Active=Ok
BI333031Outdoor Air Electric Preheater Airflow MonitoringInput for faultReadInactive=Fault; Active=Ok
BO3027011Mini Chiller On/OffMini Chiller OnReadInactive=Off; Active=On
BO3027012Mini Chiller Cooling/HeatingDemand heating operationReadInactive=Cooling; Active=Heating
BV3027011Mini Chiller FaultDisplay faultReadInactive=Ok; Active=Fault
BI3027011Mini Chiller Fault InputInput for faultReadInactive=Fault; Active=Ok
BO2128021DX Condensing Unit Stage 1 OnRelease dx stageReadInactive=Off; Active=On
BV2128021DX Condensing Unit Stage 1 FaultDisplay faultReadInactive=Ok; Active=Fault
BI2128021DX Condensing Unit Stage 1 Fault inputInput for faultReadInactive=Fault; Active=Ok
BO2128031DX Condensing Unit Stage 2 OnRelease dx stageReadInactive=Off; Active=On
BV2128031DX Condensing Unit Stage 2 FaultDisplay faultReadInactive=Ok; Active=Fault
BI2128031DX Condensing Unit Stage 2 Fault InputInput for faultReadInactive=Fault; Active=Ok
BO2128041DX Mitsubishi Inverter Stage 1 OnRelease dx stageReadInactive=Off; Active=On
BV2128041DX Mitsubishi Inverter Stage 1 FaultDisplay faultReadInactive=Ok; Active=Fault
BO2128042DX Mitsubishi Inverter Stage 1 Heating OutputDemand heating operationReadInactive=Off; Active=On
BI2128041DX Mitsubishi Inverter Stage 1 Fault InputInput for faultReadInactive=Fault; Active=Ok
BI2128042DX Mitsubishi Inverter Stage 1 Defrost InputDefrost operation activeReadInactive=Fault; Active=Ok
BI2128043DX Mitsubishi Inverter Stage 1 Predefrost InputDefrost operation activeReadInactive=Fault; Active=Ok
BO2128051DX Mitsubishi Inverter Stage 2 OnRelease dx stageReadInactive=Off; Active=On
BV2128051DX Mitsubishi Inverter Stage 2 FaultDisplay faultReadInactive=Ok; Active=Fault
BO2128052DX Mitsubishi Inverter Stage 2 Heating OutputDemand heating operationReadInactive=Off; Active=On
BI2128051DX Mitsubishi Inverter Stage 2 Fault InputInput for faultReadInactive=Fault; Active=Ok
BI2128052DX Mitsubishi Inverter Stage 2 Defrost InputDefrost operation activeReadInactive=Fault; Active=Ok
BI2128053DX Mitsubishi Inverter Stage 2 Predefrost InputDefrost operation activeReadInactive=Fault; Active=Ok
BV2128011Dx Freeze Protection Active EnableDisplay faultReadInactive=Ok; Active=Fault
BI2128022Dx Peak Load Switch OffSwitch off compressor due to peak loadReadInactive=Off; Active=On
BV110012Supply Air Heater 1 Frost Protection Air FaultDisplay faultReadInactive=Ok; Active=Fault
BI110011Supply Air Heater 1 Frost Protection Air ThermostatFrost protection air thermostat configurationReadInactive=Fault; Active=Ok
BI109011Supply Air Filter Pressure Switch 1Filter Pressure switchReadInactive=Fault; Active=Ok
BI109021Supply Air Filter Pressure Switch 2Filter Pressure switchReadInactive=Fault; Active=Ok
BI309011Outdoor Air Filter Pressure Switch 1Filter Pressure switchReadInactive=Fault; Active=Ok
BI309021Outdoor Air Filter Pressure Switch 2Filter Pressure switchReadInactive=Fault; Active=Ok
BI209011Extract Air Filter Pressure Switch 1Filter Pressure switchReadInactive=Fault; Active=Ok
BI209021Extract Air Filter Pressure Switch 2Filter Pressure switchReadInactive=Fault; Active=Ok
BI809021Energy Recovery System Overpressure Protection SwitchFilter Pressure switchReadInactive=Fault; Active=Ok
BO103011Supply Air Heater 1 Pump OnOn/off the pumpReadInactive=Off; Active=On
BV103011Supply Air Heater 1 Pump FaultDisplay faultReadInactive=Ok; Active=Fault
BI103011Supply Air Heater 1 Pump MotorprotectionInput for motorprotectionReadInactive=Fault; Active=Ok
BO103031Supply Air Cooler 1 Pump OnOn/off the pumpReadInactive=Off; Active=On
BV103031Supply Air Cooler 1 Pump FaultDisplay faultReadInactive=Ok; Active=Fault
BI103031Supply Air Cooler 1 Pump MotorprotectionInput for motorprotectionReadInactive=Fault; Active=Ok
BI2103011Runaround Coil Pump MotorprotectionInput for motorprotectionReadInactive=Fault; Active=Ok
BO803011Energy Recovery System 1 Pump OnOn/off the pumpReadInactive=Off; Active=On
BV803011Energy Recovery System 1 Pump FaultDisplay faultReadInactive=Ok; Active=Fault
BI803011Energy Recovery System 1 Pump MotorprotectionInput for motorprotectionReadInactive=Fault; Active=Ok
BO2103011Runaround Coil Pump OnOn/off the pumpReadInactive=Off; Active=On
BV2103011Runaround Coil Pump FaultDisplay faultReadInactive=Ok; Active=Fault
BO104011Supply Air Heater 1 Valve OpenOpen valveReadInactive=Off; Active=On
BO104012Supply Air Heater 1 Valve CloseClose valveReadInactive=Off; Active=On
BV104011Supply Air Heater 1 Valve FaultDisplay faultReadInactive=Ok; Active=Fault
BO104031Supply Air Cooler 1 Valve OpenOpen valveReadInactive=Off; Active=On
BO104032Supply Air Cooler 1 Valve CloseClose valveReadInactive=Off; Active=On
BV104031Supply Air Cooler 1 Valve FaultDisplay faultReadInactive=Ok; Active=Fault
BO804011Energy Recovery System 1 Valve OpenOpen valveReadInactive=Off; Active=On
BO804012Energy Recovery System 1 Valve CloseClose valveReadInactive=Off; Active=On
BV804011Energy Recovery System 1 Valve FaultDisplay faultReadInactive=Ok; Active=Fault
BO805011Energy Recovery System 1 Motor OnOn/off the pumpReadInactive=Off; Active=On
BV805011Energy Recovery System 1 Motor FaultDisplay faultReadInactive=Ok; Active=Fault
BV805012Energy Recovery System 1 Motor Rotation Monitoring InvalidMonitoring of the beltReadInactive=Ok; Active=Fault
BI805011Energy Recovery System 1 Motor MotorprotectionInput for motorprotectionReadInactive=Fault; Active=Ok
BI805012Energy Recovery System 1 Motor Rotation Guard InputRotation monitoringReadInactive=Off; Active=On
BO805021ERS 2 Motor On BOOn/off the sensible motor (used for twin wheel)ReadInactive=Off; Active=On
BV805021ERS 2 Motor Fault BVDisplay faultReadInactive=Ok; Active=Fault
BV805022ERS 2 Motor Rotation Monitoring Invalid BVMonitoring of the beltReadInactive=Ok; Active=Fault
BI805021ERS 2 Motor Motorprotection BIInput for motorprotectionReadInactive=Fault; Active=Ok
BI805022ERS 2 Motor Rotation Guard BIRotation monitoringReadInactive=Off; Active=On
BOmin101011Supply Air Fan 1 OnOn/off the FanReadInactive=Off; Active=On
BV101011Supply Air Fan 1 FaultDisplay faultReadInactive=Ok; Active=Fault
BI101011Supply Air Fan 1 MotorprotectionInput for motorprotectionReadInactive=Fault; Active=Ok
BO101012SUP Fan 1 Stage 2 On BOOn/off the FanReadInactive=Off; Active=On
BO201011Extract Air Fan 1 OnOn/off the FanReadInactive=Off; Active=On
BV201011Extract Air Fan 1 FaultDisplay faultReadInactive=Ok; Active=Fault
BI201011Extract Air Fan 1 MotorprotectionInput for motorprotectionReadInactive=Fault; Active=Ok
BO201012ETA Fan 1 Stage 2 On BOOn/off the FanReadInactive=Off; Active=On
BO302011Outdoor Air Damper 1 OpenOpen damperReadInactive=Off; Active=On
BO302012Outdoor Air Damper 1 CloseClose damperReadInactive=Off; Active=On
BV302011Outdoor Air Damper 1 FaultDisplay faultReadInactive=Ok; Active=Fault
BO302021Outdoor Air Bypass Damper OpenOpen damperReadInactive=Off; Active=On
BO302022Outdoor Air Bypass Damper CloseClose damperReadInactive=Off; Active=On
BV302021Outdoor Air Bypass Damper FaultDisplay faultReadInactive=Ok; Active=Fault
BO402011Exhaust Air Damper 1 OpenOpen damperReadInactive=Off; Active=On
BO402012Exhaust Air Damper 1 CloseClose damperReadInactive=Off; Active=On
BV402011Exhaust Air Damper 1 FaultDisplay faultReadInactive=Ok; Active=Fault
AV3030031Temperature Control Heating SetpointHeating setpoint°CWrite
AV3030041Temperature Control Cooling SetpointCooling setpoint°CWrite
AV3030051Temperature Control Heating Offset SetpointHeating offsetΔKWrite
AV3030061Temperature Control Cooling Offset SetpointCooling offsetΔKWrite
AVmin3030071Temperature Control SetpointSetpoint for control°CWrite
AV3030081Temperature Control Relative SetpointRelative setpoint offset for controlΔKWrite
MV3030011Temperature Control Type1=None, 2=Supply Air, 3=Extract, 4=Room Air, 5=Extract Cascade, 6= Room Cascade, 7=Outddor Air CurveWrite1=None; 2=Supply Air; 3=Extract Air; 4=Room Air; 5=Extract Air Cascade; 6=Room Air Cascade; 7=Outdoor Air Curve
MV3030012Temperature Control Mode1=Automatic, 2= Heating, 3=Cooling, 4=NightpurgeWrite1=Automatic; 2=Heating; 3=Cooling; 4=Night Purge
AV3232071Air Quality SetpointSetpoint for controlppmWrite
AV133012Supply Air Fan Volume Flow SetpointSupply air volume flow setpointm³/hWrite
AV133013Supply Air Fan Pressure SetpointSupply air pressure setpointPaWrite
AV133014Supply Air Fan Manual SetpointSupply air manual setpoint%Write
AV133024Supply Air Fan Control Offset SetpointOffset in follow mode%Write
AV133025Supply Air Fan Control Factor SetpointFactor in follow modeWrite
AV133034Supply Air Fan Control Offset Absolut SetpointOffset absolut in follow modem³/hWrite
AV233012Extract Air Fan Volume Flow SetpointExtract air volume flow setpointm³/hWrite
AV233013Extract Air Fan Pressure SetpointExtract air pressure setpointPaWrite
AV233014Extract Air Fan SetpointExtract air manual setpoint%Write
AV233024Extract Air Fan Control Offset SetpointOffset in follow mode%Write
AV233025Extract Air Fan Control Factor SetpointFactor in follow modeWrite
AV233034Extract Air Fan Control Offset Absolut SetpointOffset absolut in follow modem³/hWrite
AV2929011Damper Control Outdoor Air Amount Minimum SetpointOutdoor air amount %%Write
AV2929014Damper Control Outdoor Air Amount Volume Minimum SetpointVolume flow outdoor air amountm³/hWrite
AV2929010Damper Control Outdoor Air Amount Maximum SetpointOutdoor air amount %%Write
AV2929017Damper Control Outdoor Air Amount Volume Maximum SetpointVolume flow outdoor air amountm³/hWrite
MVmin3939011Unit Operation ModeOperating mode of the unitWrite1=Automatic; 2=Room Frost Protection; 3=Low Speed; 4=High Speed; 5=Free Profile 1; 6=Free Profile 2; 7=Night Purge
MV3939101Unit Operation Mode Internal Bypass 1 SelectionSelection of internal bypass operating profileWrite1=Room Frost Protection; 2=Low Speed; 3=High Speed; 4=Free Profile 1; 5=Free Profile 2; 6=Night Purge
AV3939101Unit Operation Mode Internal Bypass 1 External Time SetpointExecution time internal bypassminWrite
AI3030042Temperature Control External SetpointExternal temperature setpoint°CWrite
AI3030043Temperature Control External Relative SetpointExternal temperature relative setpointΔKWrite
AI133022Supply Air Fan Control Volume Flow External SetpointExternal volume flow setpointm³/hWrite
AI133023Supply Air Fan Control Pressure External SetpointExternal duct pressure setpointPaWrite
AI133024Supply Air Fan Control Manual External SetpointExternal manual setpoint%Write
AI233022Extract Air Fan Control Volume Flow External SetpointExternal volume flow setpointm³/hWrite
AI233023Extract Air Fan Control Pressure External SetpointExternal duct pressure setpointPaWrite
AI233024Extract Air Fan Control Manual External SetpointExternal manual setpoint%Write
AI133025Supply Air Fan Control Pres Ext. Input Relative SetpointExternal duct pressure relative setpointPaWrite
AI233025Extract Air Fan Control Pres Ext. Input Relative SetpointExternal duct pressure relative setpointPaWrite
AI2929011Damper Control Outdoor Air Amount External SetpointExternal setpoint outdoor air amount%Write
AV3939031Unit On Operating Hours Maintenance SetpointThreshold setpointhrsWrite
AImin106011Supply Air Temperature SensorLocal input sensor°CRead
AI106031Supply Air Fan Nozzle Temperature SensorLocal input sensor°CRead
AI106041Supply Air Heater 1 Inlet Temperature SensorLocal input sensor°CRead
AI106051Supply Air Heater 1 Outlet Temperature SensorLocal input sensor°CRead
AI106081Supply Air Cooler 1 Inlet Temperature SensorLocal input sensor°CRead
AI106091Supply Air Cooler 1 Outlet Temperature SensorLocal input sensor°CRead
AImin206011Extract Air Temperature SensorLocal input sensor°CRead
AI206071Extract Air Fan Nozzle Temperature SensorLocal input sensor°CRead
AImin306011Outdoor Air Temperature SensorLocal input sensor°CRead
AI306021Outdoor Air Filter Temperature SensorLocal input sensor°CRead
AI406011Exhaust Air Temperature SensorLocal input sensor°CRead
AI706011Room Air Temperature Sensor 1Local input sensor°CRead
AI806011Energy Recovery System 1 Inlet Temperature SensorLocal input sensor°CRead
AI806021Energy Recovery System 1 Outlet Temperature SensorLocal input sensor°CRead
AI806031Supply Air Temperature Sensor Behind Energy Recovery SystemLocal input sensor°CRead
AI806041Exhaust Air Temperature Sensor Behind Energy Recovery SystemLocal input sensor°CRead
AI806051Energy Recovery System Icing Temperature SensorLocal input sensor°CRead
AI2006011Outdoor Air Temperature Facade SensorLocal input sensor°CRead
AI2106011Evaporator 1 Temperature SensorLocal input sensor°CRead
AI106121Supply Air Heater 1 Inflow Temperature SensorLocal input sensor°CRead
AI106131Supply Air Heater 1 Outflow Temperature SensorLocal input sensor°CRead
AI106181Supply Air Cooler 1 Inflow Temperature SensorLocal input sensor°CRead
AI106191Supply Air Cooler 1 Outflow Temperature SensorLocal input sensor°CRead
AI2106021Dx Inflow Temperature SensorLocal input sensor°CRead
AI2106031Dx Outflow Temperature SensorLocal input sensor°CRead
AV106011SUP Tmp. Control Ctrl AVActual value supply air temperature control°CRead
AV206011Extract Air Temperature Control ValueActual value extract air temperature control°CRead
AV306011Outdoor Air Temperature Control ValueActual value outdoor air temperature control°CRead
AV706011Room Air Temperature Control ValueActual value room air temperature control°CRead
AV2006011Outdoor Air external Temperature Control ValueActual value outdoor air temperature extern control°CRead
AV3030231Temperature Control ValueActual value for control°CRead
AV3030011Temperature Control Heating Setpoint Control ValueHeating setpoint for control°CRead
AV3030012Temperature Control Heating Active Setpoint Control ValueHeating setpoint for control active sequences°CRead
AV3030021Temperature Control Cooling Setpoint Control ValueCooling setpoint for control°CRead
AV3030022Temperature Control Cooling Active Setpoint Control ValueCooling setpoint for control active sequences°CRead
AV3030072Temperature Control Cascade Heating SetpointSetpoint for control°CRead
AV3030232Temperature Control Cascade Control ValueActual value for control°CRead
AV3030073Temperature Control Base SetpointSetpoint for control°CRead
AV3030171Temperature Control Supply Air Minimum Relative SetpointRelative setpoint supply minimum controlΔKRead
AV3030181Temperature Control Supply Air Maximum Relative SetpointRelative setpoint supply minimum controlΔKRead
AV3030191Temperature Control Supply Air Minimum Absolute SetpointSetpoint supply air minimum absolute control°CRead
AV3030201Temperature Control Supply Air Maximum Absolute SetpointSetpoint supply air maximum absolute control°CRead
AV107023Supply Air Enthalpy Control ValueActual value enthalpykJ/kgRead
AV207023Extract Air Enthalpy Control ValueActual value enthalpykJ/kgRead
AV307023Outdoor Air Enthalpy Control ValueActual value enthalpykJ/kgRead
AV2007023Outdoor Air Extern Enthalpy Control ValueActual value enthalpykJ/kgRead
AV707026Room Air Enthalpy 1 Control ValueActual value enthalpykJ/kgRead
AV707030Room Air Enthalpy Control ValueActual value enthalpykJ/kgRead
AV107043Supply Air Cooler 1 Inflow Enthalpy Control ValueActual value enthalpykJ/kgRead
AV107053Supply Air Cooler 1 Outflow Enthalpy Control ValueActual value enthalpykJ/kgRead
AV807013Energy Recovery System 1 Inflow Enthalpy Control ValueActual value enthalpykJ/kgRead
AV807023Energy Recovery System 1 Outflow Enthalpy Control ValueActual value enthalpykJ/kgRead
AV2107023Dx Inflow Enthalpy Control ValueActual value enthalpykJ/kgRead
AV2107033Dx Outflow Enthalpy Control ValueActual value enthalpykJ/kgRead
AI208011Extract Air Quality SensorLocal input sensorppmRead
AI308011Outdoor Air Quality SensorLocal input sensorppmRead
AI308021ODA Air Quality CO Sensor AILocal input sensorppmRead
AI109011Supply Air Filter Pressure Sensor 1Pressure input for filter monitoringPaRead
AI109021Supply Air Filter Pressure Sensor 2Pressure input for filter monitoringPaRead
AI109031Supply Air Nozzle Pressure SensorLocal input sensorPaRead
AI109041Supply Air Duct Pressure SensorLocal input sensorPaRead
AI209011Extract Air Filter Pressure 1 SensorPressure input for filter monitoringPaRead
AI209021Extract Air Filter Pressure 2 SensorPressure input for filter monitoringPaRead
AI209031Extract Air Duct Pressure SensorLocal input sensorPaRead
AI209041Extract Air Nozzle Pressure SensorLocal input sensorPaRead
AI309011Outdoor Air Filter Pressure 1 SensorPressure input for filter monitoringPaRead
AI309021Outdoor Air Filter Pressure Sensor 2Pressure input for filter monitoringPaRead
AI309031Outdoor Air Bypass Pressure SensorLocal input sensorPaRead
AI409011Exhaust Air Bypass Pressure SensorLocal input sensorPaRead
AI809011Energy Recovery System Pressure SensorLocal input sensorPaRead
MVmin3939091Unit Operation Mode ActualActual operating profileRead1=Room Frost Protection; 2=Low Speed; 3=High Speed; 4=Free Profile 1; 5=Free Profile 2; 6=Night Purge; 7=Boost
AV3939021Unit On Operating HoursTotal operating hourshrsRead
AV3939081Order NumberOrder numberRead
AV3939151Temperature Control Roomfrostprotection Hysteresis SetpointSetpoint hysteresis to on/off the unitΔKRead
AI3939261Alarm External Analog Input 1External Input AlarmRead
AV133015Supply Air Fan Control Volume Flow Setpoint Control ValueSupply air volume flow setpoint controlm³/hRead
AV133016Supply Air Fan Control Pres Setpoint Control ValueSupply air pressure setpoint controlPaRead
AV133017Supply Air Fan Control Manual Setpoint Control ValueSupply air manual setpoint control%Read
AV133031Supply Air Fan Calculated Volume FlowCalculated volume flow supply fanm³/hRead
AV133030Supply Fan Control Pressure Control ValueSupply air pressure value controlPaRead
AV133026Supply Air Fan Control Output SetpointOutput in follow mode%Read
AV233015Extract Air Fan Control Volume Flow Setpoint Control ValueExtract air volume setpoint controlm³/hRead
AV233016Extract Air Fan Control Pressure Setpoint Control ValueExtract air pressure setpoint controlPaRead
AV233017Extract Air Fan Control Manual Setpoint Control ValueExtract air manual setpoint control%Read
AV233031Extract Air Fan Calculated Volume FlowCalculated volume flow extract fanm³/hRead
AV233030Extract Fan Control Pressure Control ValueExtract air pressure value controlPaRead
AV233026Extract Air Fan Control Output SetpointOutput in follow mode%Read
AO2128041DX Mitsubishi Inverter Stage 1 OutputOutput for Dx%Read
AO2128051DX Mitsubishi Inverter Stage 2 OutputOutput for Dx%Read
AV3021011Mini Chiller Operating HoursTotal operating hourshrsRead
AV2128021DX Condensing Unit Stage 1 Operating HoursTotal operating hourshrsRead
AV2128031DX Condensing Unit Stage 2 Operating HoursTotal operating hourshrsRead
AV2128041DX Mitsubishi Inverter Stage 1 Operating HoursTotal operating hourshrsRead
AV2128051DX Mitsubishi Inverter Stage 2 Operating HoursTotal operating hourshrsRead
AV2110011Dx Heating Calculated EnergyCalculated energykWhRead
AV2110012Dx Cooling Calculated EnergyCalculated energykWhRead
AO103011Supply Air Heater 1 Pump OutputOutput for pump%Read
AO103031Supply Air Cooler 1 Pump OutputOutput for pump%Read
AO803011Energy Recovery System 1 Pump OutputOutput for pump%Read
AO2103011Runaround Coil Pump OutputOutput for pump%Read
AV103013Supply Air Heater 1 Pump Operating HoursTotal operating hourshrsRead
AV103033Supply Air Cooler 1 Pump Operating HoursTotal operating hourshrsRead
AV803013Energy Recovery System 1 Pump Operating HoursTotal operating hourshrsRead
AV2103011Runaround Coil Pump Operating HoursTotal operating hourshrsRead
AV810011Energy Recovery System 1 Recovered Heating Calculated EnergyCalculated energykWhRead
AV810012Energy Recovery System 1 Recovered Cooling Calculated EnergyCalculated energykWhRead
AV110061Supply Air Heater 1 Calculated Sensible HeatSensible Heat CalculationkWRead
AV110062Supply Air Heater 1 Calculated EnergyCalculated energykWhRead
AV110081Supply Air Cooler 1 Calculated Latent HeatLatent Heat CalculationkWRead
AV110082Supply Air Cooler 1 Calculated EnergyCalculated energykWhRead
AV3910011Total Calculated Heating Energy for CoilsCalculated energykWhRead
AV3910021Total Calculated Cooling Energy for CoilsCalculated energykWhRead
AO104011Supply Air Heater 1 Valve OutputOutput for valve%Read
AO104031Supply Air Cooler 1 Valve OutputOutput for valve%Read
AO804011Energy Recovery System Valve 1 OutputOutput for valve%Read
AI104011Supply Air Heater 1 Valve FeedbackFeedback valve%Read
AI104031Supply Air Cooler 1 Valve FeedbackFeedback valve%Read
AI804011Energy Recovery System 1 Valve FeedbackFeedback valve%Read
AO805011Energy Recovery System 1 Motor OutputOutput for motor%Read
AV805013Energy Recovery System 1 Motor Operating HoursTotal operating hourshrsRead
AO805021ERS 2 Motor Output AOOutput for sensible motor (used for twin wheel)%Read
AV805023ERS 2 Motor Operating Hours AVTotal operating hourshrsRead
AV101013Supply Air Fan 1 Calculated Energy Control ValueEnergy in KwhkWhRead
AV201013Extract Air Fan 1 Calculated Energy Control ValueEnergy in KwhkWhRead
AV3901013Total Fan Calculated Energy Control ValueEnergy in KwhkWhRead
AV3901014Total Fan Calculated PowerPower CalculationkWRead
AO101011Supply Air Fan 1 OutputOutput for fan%Read
AO201011Extract Air Fan 1 OutputOutput for fan%Read
AV4010011Specific Fan 1 PowerCalculated specific fan powerWh/m³Read
AV4010012Specific Fan 1 Power Kw/(m3/s) AVCalculated specific fan powerRead
AV3910041Specific Fan PowerCalculated specific fan powerWh/m³Read
AV3910042Specific Fan Power Kw/(m3/s) AVCalculated specific fan powerRead
AV101011Supply Air Fan 1 Operating HoursTotal operating hourshrsRead
AV201011Extract Air Fan 1 Operating HoursTotal operating hourshrsRead
AO302011Outdoor Air Damper 1 OutputOutput for damper%Read
AO302021Outdoor Air Bypass Damper OutputOutput for damper%Read
AO402011Exhaust Air Damper 1 OutputOutput for damper%Read
AI302011Outdoor Air Damper 1 FeedbackFeedback damper%Read
AI302021Outdoor Air Bypass Damper FeedbackFeedback damper%Read
AI402011Exhaust Air Damper 1 FeedbackFeedback damper%Read
IV3939012Pin Code Lock ScreenPin code for ouman displayRead
IV3939013Lock ScreenEnable lock screenRead
Object ID lookup: FläktGroup ISYteq 4.0 AHU controls 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 ISYteq 4.0 AHU controls (SW 1.3.0.2) 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 FläktGroup ISYteq 4.0 AHU controls (SW 1.3.0.2)

How many BACnet points does the FläktGroup ISYteq 4.0 AHU controls (SW 1.3.0.2) have?

This list has 365 BACnet objects: 59 analog inputs, 16 analog outputs, 100 analog values, 44 binary inputs, 40 binary outputs, 99 binary values, 5 multi-state values, 2 integer values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which FläktGroup ISYteq 4.0 AHU controls (SW 1.3.0.2) BACnet points are writable?

47 of the 365 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 FläktGroup ISYteq 4.0 AHU controls (SW 1.3.0.2) BACnet documentation?

The source is ISYteq 4.0 BMS Communication list SW version 1.3.0.2 (Full BMS communication list), published free by FläktGroup at https://www.flaktgroup.com/api/v1/Documents/1241959/Download.

What are the minimum BACnet points to integrate the FläktGroup ISYteq 4.0 AHU controls (SW 1.3.0.2)?

Start with MV 3939011 Unit Operation Mode (Unit mode command: 1 Automatic, 3 Low, 4 High speed); AV 3030071 Temperature Control Setpoint (Temperature setpoint, °C); BV 3939042 BMS Heartbeat Write (BMS keep-alive written by the BMS); MV 3939091 Unit Operation Mode Actual (Actual operating profile); BO 101011 Supply Air Fan 1 On (Supply fan 1 running); AI 106011 Supply Air Temperature Sensor (Supply air temperature, °C); AI 206011 Extract Air Temperature Sensor (Extract air temperature, °C); AI 306011 Outdoor Air Temperature Sensor (Outdoor air temperature, °C); BO 3939101 Alarm Collective A/B On/Off (Any collective alarm); BO 3939031 Alarm Collected Active A (Collective A alarm active).

How do I enable BMS control of the FläktGroup ISYteq 4.0 AHU controls (SW 1.3.0.2)?

MV 3939011 Unit Operation Mode (R/W) selects Automatic, Room Frost Protection, Low/High Speed, Free Profile 1/2 or Night Purge. BV 3030081 Unit Enable Via Temperature Control and the humidity / air-quality equivalents can also enable the unit. The integration manual's optional High priority function (Operating data > 8.8 BMS) lets BMS values override user inputs and profiles.

Does the FläktGroup ISYteq 4.0 AHU controls (SW 1.3.0.2) need a BACnet heartbeat or have a communication timeout?

BV 3939041 BMS Heartbeat Read and BV 3939042 BMS Heartbeat Write are described only as objects to check that the BMS is alive; the list gives no timeout or fallback behaviour.

How do I check these points on the real ISYteq 4.0 AHU controls (SW 1.3.0.2)?

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 FläktGroup BACnet points lists

Source: ISYteq 4.0 BMS Communication list SW version 1.3.0.2 (Full BMS communication list). Object names, instances and units are reproduced as published; descriptions are our own.