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Small rectangular white plastic adapter with terminal block and wiring connections

SAMSUNG

SAMSUNG MIM-A60UN 24VAC HVAC Control

SKU CH-VKAY-MVECW MPN MIM-A60UN

Enables standard 24VAC thermostat control of Samsung HVAC indoor units via F3-F4 line, supporting 1 or 2 stage cooling with external transformer

  • Enables 24VAC thermostat control of Samsung HVAC systems
  • One adapter connects to F3-F4 line per indoor unit
  • Supports 1 or 2 stage cooling with external transformer
  • Configures units for primary, secondary or cooling-only heat
  • Allows direct connection of MRW-TA temperature sensor

Samsung HVAC thermostat adapter

The MIM-A60UN connects a standard 24VAC thermostat to a Samsung indoor unit, enabling basic power, mode and fan control through the F3-F4 communication line. It is designed for installers who want third-party thermostat integration on compatible Samsung systems.

Central control limitation

When this adapter is active, central controllers such as DMS2, DMS 2.5, MIM-H03UN and MCM-A300N cannot command the indoor unit; they are restricted to monitoring only. A field-supplied 24VAC transformer is required unless the multi-position air handler already provides one.

One adapter per indoor unit

Each indoor unit needs its own MIM-A60UN wired to the F3-F4 line, so a multi-zone installation requires a matching number of adapters. The unit supports one- or two-stage cooling and can be configured for primary heating, secondary heating or cooling-only operation.

Highlights

  • Enables 24VAC thermostat control of Samsung HVAC systems
  • One adapter connects to F3-F4 line per indoor unit
  • Supports 1 or 2 stage cooling with external transformer
  • Configures units for primary, secondary or cooling-only heat
  • Allows direct connection of MRW-TA temperature sensor

Specifications

BrandSamsung
ModelMIM-A60UN

Questions about this item

One adapter or one per indoor unit?

One adapter is needed for each indoor unit and it connects to the F3-F4 communication line.

What control does the 24VAC thermostat actually give me?

You get power on/off, mode selection, heat, cool and fan speed choices of auto, low, medium or high.

What does the F3-F4 connection mean for central controllers?

Central controllers such as DMS2, DMS 2.5, MIM-H03UN or MCM-A300N can only monitor the unit; they cannot control it.

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