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Mini interface 24 V Élios – MI3C1
À quoi ça sert – Mini interface 24 V Élios – MI3C1
Fiche technique – Mini interface 24 V Élios – MI3C1
À savoir avant l’installation – Mini interface 24 V Élios – MI3C1
Mini interface 24 V Élios – MI3C1
À quoi ça sert – Mini interface 24 V Élios – MI3C1
Fiche technique – Mini interface 24 V Élios – MI3C1
À savoir avant l’installation – Mini interface 24 V Élios – MI3C1
Élios

Élios 24 V Mini Interface – MI3C1

In stock

The original adapter that lets you run an Élios unit from a standard 24 V thermostat.

AirGreen codeAG-AC-061

24 Vstandard thermostats
11 terminalsfrom R to L
6 msuggested cable
24 V thermostatGenuine part
Ask for a quote

514 316-2973 · sales@airgreen.ca

Quick facts

AirGreen codeAG-AC-061
BrandÉlios
Part no.MI3C1
TypeMini interface for 24 V thermostat
ForEMC and EBC wall units, cassettes, EAHM air handlers and Élios G units
Power24 V AC

The Élios MI3C1 24 V mini interface lets you control an Élios unit with a standard 24 V thermostat. Élios wall-mounted heat pumps, cassettes and air handlers are normally run from their remote or their wired controller; the MI3C1 translates the signals from a conventional wall thermostat for the indoor unit.

The thermostat of your choice on an Élios unit

The manual presents it for common 24 V AC thermostats, including Wi-Fi models. It is useful when replacing an old system while keeping the thermostat in place, or when you want a thermostat already used elsewhere in the house. Élios lists it for its EMC and EBC wall-mounted heat pumps, its GKHRA, GQHRA and GQHLA cassettes, its EAHM air handlers and the GGHL, GPHL, GCHM and GUHM units.

Thermostat terminals

  • R and C (24 V power), G (fan).
  • Y1 and Y2/Y (compressor), B/O (reversing valve).
  • W and W1 (heating and electric backup), E/AUX (emergency), DH (dehumidification), L (fault signal).

Good to know

Élios specifies that functions may be reduced with a 24 V thermostat compared with its own controls. The interface mounts on a wall, indoors, between -5 and 43 °C. Keep 300 to 500 mm between low-voltage and high-voltage wiring. A T1 sensor and extension cables up to 6 m are included.

Installed by AirGreen across Greater Montréal

We install the interface and connect your thermostat 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 indoor unit model, your thermostat model and the quantity.
01 · What it is for

Your 24 V thermostat on an Élios unit

Élios ductless units and air handlers have no 24 V terminals: the MI3C1 bridges the gap.

  • Élios EMC (EWHM) and EBC (EWHB) wall-mount heat pumps
  • Élios GKHRA, GQHRA and GQHLA cassettes
  • EAHM air handlers and the GGHL, GPHL, GCHM and GUHM units listed by Élios
  • Replacing an old unit while keeping an existing 24 V thermostat
Standard thermostatsThe manual presents it for common 24 V AC thermostats, Wi-Fi ones included.
Heat pump and backupTerminals for 2 compressor stages, reversing valve, electric backup and emergency heat.
Sensor includedA T1 sensor and extension cables up to 6 m are included, per the Élios sheet.
Compatible with
EWHMA09C2AS1EWHMA12C2AS1EWHMA33C2AS1EWHBA09C2AN1EWHBA12C2AN1EWHBA36C2AS1GKHRA09C2AS1GKHRA12C2AS1GKHRA18C2AS1GQHRA24C2AS1GQHLA36R2AS1GQHLA48R2AS1EAHMA24R4AS1EAHMA30R4AS1EAHMA36R4AS1EAHMA48R4AS1EAHMA60R4AS1
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.

BrandÉlios
Part no.MI3C1
TypeMini interface for 24 V thermostat
Power24 V AC, 18 AWG wire
Thermostat terminalsR, C, G, Y1, Y2/Y, B/O, W, W1, E/AUX, DH, L
Operating conditions-5 to 43 °C, 40 to 90 % RH
Dimensions (W × D × H)3.94 × 1.42 × 6.1 in
Élios unitsEAHM, EWHB (EBC), EWHM (EMC); GGHL, GPHL, GKHR, GQHR, GQHL, GCHM, GUHM
AirGreen codeAG-AC-061
03 · Before installing

What to know before installing

  • Élios notes that performance and features may be reduced with a 24 V thermostat compared with its native controls.
  • Keep 300 to 500 mm between low-voltage and high-voltage wiring.
  • The interface goes indoors, between -5 and 43 °C, away from oil, steam and sulphurous gases.
  • The manual suggests a 6 m connection cable to the indoor unit.
In the package
  • Mini interface
  • T1 sensor (16 cm)
  • Extension cables up to 6 m
  • Connection wires to the indoor unit
04 · Documents

Manufacturer documents

PDFSpec sheetÉliosPDFInstallation manualÉlios
05 · Goes with

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06 · Questions

Frequently asked questions

Which thermostat can I connect?

A standard 24 V AC thermostat. The manual names common ones such as Nest, ecobee and Honeywell. We check the terminals of your model with you.

Do I lose any functions?

Possibly. Élios notes that performance and features may vary, and some may be reduced or unavailable with a 24 V thermostat rather than its native controls.

How is it different from the LI2C1 large interface?

The MI3C1 connects a 24 V thermostat to an Élios indoor unit. The LI2C1 pairs a coil, furnace or air handler, even another brand, with an Élios outdoor unit; the maker recommends the MI3C1 when it fits.

Can you install it?

Yes. We mount the interface, wire the thermostat and the indoor unit, and test every mode, everywhere in Greater Montréal.

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

Keep your 24 V thermostat with an Élios unit

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.