Home » Samsung Hylex ACU Control Module MXD-U001XN
Module de contrôle ACU Samsung Hylex MXD-U001XN
À quoi ça sert – Module de contrôle ACU Samsung Hylex MXD-U001XN
Fiche technique – Module de contrôle ACU Samsung Hylex MXD-U001XN
À savoir avant l’installation – Module de contrôle ACU Samsung Hylex MXD-U001XN
Module de contrôle ACU Samsung Hylex MXD-U001XN
À quoi ça sert – Module de contrôle ACU Samsung Hylex MXD-U001XN
Fiche technique – Module de contrôle ACU Samsung Hylex MXD-U001XN
À savoir avant l’installation – Module de contrôle ACU Samsung Hylex MXD-U001XN
Samsung

Samsung Hylex ACU Control Module MXD-U001XN

In stock

Samsung’s genuine control unit that links the Hylex heat pump, the 24 V thermostat and the air handler or furnace.

AirGreen codeAG-AC-129

24 VACinput, 3 W maximum
Mandatorywith R-454B Hylex heat pumps
Wi-FiSmartThings app
R-454BSamsung Hylex™Genuine part
Ask for a quote

514 316-2973 · sales@airgreen.ca

Quick facts

AirGreen codeAG-AC-129
BrandSamsung
Part no.MXD-U001XN
Samsung nameAHU Control Unit (ACU)
ForHylex™ outdoor units AC0**FCU*CG/AA, R-454B
Power24 VAC, 3 W max.

The Samsung MXD-U001XN ACU control module (AHU Control Unit) is the required interface for Samsung Hylex™ R-454B heat pumps. It is installed between the outdoor unit, the 24 V thermostat and the indoor system: a Samsung MPAH module, a coil on a furnace or another brand’s air handler. Samsung describes it as required to run its AC0**FCU*CG/AA units with this equipment.

A Hylex heat pump on almost any indoor system

The ACU receives the thermostat calls and controls the compressor (Y1, Y2), the fan (G and three speeds), two-stage auxiliary heat (W1, W2), the reversing valve (O/B) and dehumidification (D). It stops the fan during defrost. To the outdoor unit, two conductors are enough (F1, F2), up to 328 ft. An RDS input receives the refrigerant leak detection signal, and the included Wi-Fi module connects the system to the SmartThings app.

Manufacturer specifications

  • Power supply: 24 V AC only, 3 W maximum
  • Dimensions: 10.94 × 7.35 × 1.87 in
  • Wi-Fi: IEEE 802.11 b/g/n, 2.4 GHz
  • Outdoor units: AC024, AC036, AC048 and AC060 FCUDCG and FCUPCG

Installation

The ACU is installed indoors, protected from sun, liquids and impacts, with 3/8 in of clearance above and on the sides and 2 in below. Settings are made with DIP switches. Samsung requires installation by a qualified person, in accordance with the electrical code.

Installed by AirGreen across Greater Montréal

We install Samsung Hylex heat pumps and their ACU 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 your outdoor unit model and your indoor system.
01 · What it is for

The part that lets the heat pump and the indoor system talk

Samsung requires the ACU for a Hylex outdoor unit to run with an air handler, a furnace or a coil.

  • Hylex heat pump with a Samsung MPAH air handler
  • Hylex heat pump with a coil on an existing furnace
  • Hylex heat pump with another brand of air handler
  • Heat pump with electric backup heat
Standard 24 V thermostatThe ACU runs the system from a 24 V thermostat’s signals (Y1, Y2, G, W1, W2, O/B, D).
Two wires to the outdoor unitCommunication with the outdoor unit uses two low-voltage conductors (F1, F2), up to 328 ft.
Leak detection inputAn RDS input receives the refrigerant leak detection signal; there is also a float switch input and an error output.
Compatible with
AC0**FCU*CG/AA
Per the manufacturer. Send us your unit’s model number and we confirm before ordering.
02 · Specifications

Specifications

From the manufacturer’s documentation. A value the manufacturer does not publish is not listed.

BrandSamsung
SeriesHylex™
TypeAHU Control Unit (ACU)
Part no.MXD-U001XN
Power24 VAC only
Max. consumption3 W
ACU dimensions10.94 × 7.35 × 1.87 in
Outdoor communicationF1/F2, 18 AWG, up to 328 ft (100 m)
OutputsY1, Y2, G, W1, W2, D, O/B, fan speeds G1 to G3
InputsLeak detection (RDS), float switch, external control
Wi-FiIEEE 802.11 b/g/n, 2.4 GHz, SmartThings app
Outdoor unitsAC024, AC036, AC048, AC060 FCUDCG and FCUPCG
AirGreen codeAG-AC-129
03 · Before installing

What to know before installing

  • Install the ACU indoors, away from direct sun, liquids and impact.
  • Clearance: at least 3/8 in above and on the sides, 2 in below.
  • F1/F2 cable to the outdoor unit: 18 AWG solid core, up to 328 ft.
  • Settings (system type, backup heat stages, fan speeds) are made with DIP switches.
  • Wi-Fi is 2.4 GHz only.
In the package
  • Wi-Fi module with holder
  • Fan speed control wire
  • Wi-Fi extension wire
  • Float switch wire
  • 2 cable ties
  • 5 M4 × 16 screws
  • 5 holder locks
  • 24 U-rings
  • Wire labels
  • Installation manual
04 · Documents

Manufacturer documents

PDFSpec sheetSamsungPDFInstallation manualSamsung
05 · Goes with

You may also need

Contrôleur de mitigation Samsung HA00A00203H1 pour serpentins HylexSamsung HA00A00203H1 Mitigation Controller for Hylex CoilsEnsemble d’éléments chauffants Samsung Hylex pour module MPAHSamsung Hylex Heating Element Kit for MPAH ModuleContrôleur filaire avancé Samsung – MWR-WG01UNSamsung Advanced Wired Controller – MWR-WG01UNModule d’interface de contacts externes Samsung – MIM-B14USamsung External Contact Interface Module – MIM-B14UCâble de communication 14/4 pour thermopompe14/4 Communication Cable for Heat PumpsAccessoire du système de détection de fuites Fujitsu – UTYSGZUFujitsu Leak Detection System Accessory – UTYSGZUAdaptateur 5 fils pour thermostat 24 V Hitachi – C3STAT01Hitachi 5-Wire Adapter for 24 V Thermostat – C3STAT01Adaptateur 5 fils pour thermostat Hitachi C1STAT01 (airHome)Hitachi C1STAT01 5-Wire Thermostat Adapter (airHome)
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06 · Questions

Frequently asked questions

Is it really mandatory?

Yes. Samsung describes it as required for Hylex AC0**FCU*CG/AA heat pumps to run with an air handler or a furnace with a coil, and lists it as mandatory with its Hylex MPAH air handlers and coils.

Does it work with my current furnace?

Samsung designs the ACU for other brands’ air handlers and furnaces fitted with a coil. We check your furnace and coil before proposing the match.

Can I keep a regular thermostat?

Yes. The ACU takes signals from a standard 24 V thermostat; a setting also allows a Samsung communicating controller.

Can you install it?

Yes. We install the ACU, do the wiring and set the DIP switches when we install your Hylex heat pump, everywhere in Greater Montréal.

AirGreen · Montréal, Laval, Longueuil, South Shore, North Shore

The control unit that ties your Hylex together

Tell us the size and the quantity: we confirm availability and send you a quote. Or let our technicians install it for you.

Ask for a quote514 316-2973
RBQ 5645-9605-01Ventilation, refrigeration and electrical
Free estimateon site, for any installation
Quote in 24 hby phone or email
Bouchervilleshowroom

Specifications from the manufacturer’s documentation, checked on October 7, 2026.