Fujitsu UTY-VMSX Modbus Converter
The genuine converter that brings a Fujitsu heat pump onto a Modbus network, powered by the indoor unit.
AirGreen codeAG-AC-104
514 316-2973 · sales@airgreen.ca
Quick facts
The Fujitsu UTY-VMSX Modbus converter lets you integrate a Fujitsu AIRSTAGE heat pump into a Modbus network. Fujitsu describes it as the converter that allows “centralized monitoring and control of air conditioners from a building management system, a central controller or a home automation controller”.
One unit, one converter
The connection is one-to-one: each converter plugs into a single indoor unit, to which it is linked through the board’s UART interface. It needs no external power supply, since the unit supplies it with 12 V DC. In a rental building or a commercial space with several heat pumps, you therefore install one converter per unit, then connect them to the Modbus network.
Manufacturer specifications
- Power: 12 V DC, from the indoor unit
- Consumption: 1.2 W maximum
- Dimensions: 140 × 117 × 43 mm (H × W × D), net weight 200 g
- Connectable units: 1 indoor unit
Units listed by Fujitsu
The converter appears in the accessory list for H-series R-32 systems: Altair 500, Orion XLTH and Orion XLTH+ wall units, ACUH and AUUH cassettes, ADUH and ARUH ducted units, AMUH air handling units, AGUH floor units and the suspended ceiling unit. For a BACnet MS/TP management system, Fujitsu also lists the FJ-AC-485-1 gateway.
Installed by AirGreen across Greater Montréal
We install the converters and coordinate addressing with your integrator in Montréal, Laval, Longueuil, on the South Shore and on the North Shore. RBQ licence 5645-9605-01. For availability or a quote, call us at 514 316-2973 or email sales@airgreen.ca with the number of units.
Monitor and control the heat pump over Modbus
Fujitsu describes it as the converter that fully integrates the air conditioner into a Modbus network.
- Modbus building management system
- Central controller or home automation system
- Rental buildings and shops that monitor several heat pumps
- All R-32 H-Series unit families listed by Fujitsu
Specifications
From the manufacturer’s documentation. A value the manufacturer does not publish is not listed.
What to know before installing
- Plan one converter per indoor unit.
- Fujitsu states it links an indoor unit with a UART interface to an open Modbus network.
- Modbus addressing is coordinated with the building system integrator.
- It connects to the unit’s board: have a technician do it.
Manufacturer documents
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Frequently asked questions
Is my unit compatible?
Fujitsu lists the UTY-VMSX among the accessories of its R-32 AIRSTAGE H-Series systems: Altair 500, Orion XLTH and Orion XLTH+ wall units, ACUH and AUUH cassettes, ADUH and ARUH ducted units, AMUH air handlers, AGUH floor units and the ceiling-suspended unit. Send us the model number and we confirm.
Does it need separate power?
No. Fujitsu states no external power supply is required: the converter takes 12 V DC from the indoor unit.
How many units per converter?
One. Five units need five converters.
Can you install it?
Yes. We fit the converters and work with your integrator on addressing, everywhere in Greater Montréal.
Your Fujitsu heat pumps on your Modbus network
Tell us the size and the quantity: we confirm availability and send you a quote. Or let our technicians install it for you.
Specifications from the manufacturer’s documentation, checked on October 7, 2026.