MIM-E02EN - Régulateur SAMSUNG - Free user manual and instructions

Brand	Samsung
Model	MIM-E02EN
Product Type	Communication Kit (Regulator) for EHS Heat Pump Outdoor Units
Power Supply	12 V DC (from outdoor unit PCB via supplied cable)
Communication Protocol	Modbus (RS-485)
Compatible Outdoor Units	Samsung EHS 5 kW (MIM-E02EN) and 8/16 kW (MIM-E02FN)
Accessories Included	DC power cable (12 V), communication cable (ring terminal), communication cable (red connector), flow switch, mounting screw (M4), bracket
Configuration Interface	DIP switches SW4 and SW5 for device address, refrigerant type, flow switch usage
Status Indicators	LED: Y-GRN (outdoor communication), RED (indoor communication), YEL (not used); 7-segment display (program codes, normal operation, error codes)
Error Detection	Displays error codes (E101, E108, etc.) for communication, sensor, and hardware faults
Installation Requirements	Must be installed by qualified personnel; power off before wiring; use supplied cables; observe torque (0.5-0.75 N·m) for terminal block screws
Maximum Cable Length	1000 m between control unit and farthest COMM KIT
Operating Environment	Avoid flammable gases, oil, vapor, sulfur dioxide, special sprays, acids/alkalis
Repair and Maintenance	Do not disassemble or modify; contact service center for repairs
Disposal	Contact service center for proper disposal

Frequently Asked Questions - MIM-E02EN SAMSUNG

What is the Samsung MIM-E02EN used for?

The MIM-E02EN is a communication kit (regulator) that connects the indoor control unit to the outdoor unit of Samsung EHS heat pumps, enabling control and monitoring via Modbus protocol.

How do I set the device address on the MIM-E02EN?

Use DIP switch SW4 #2. Set it to OFF for Device 30 (default for single outdoor unit) and ON for Device 31 when using two outdoor units. The other switches configure refrigerant type (SW4 #4 for R-32, OFF for R-410A) and flow switch usage (SW5 #1).

What do the LED indicators mean?

Y-GRN LED blinks when communication with the outdoor unit is valid. RED LED blinks when communication with the indoor unit is detected. YEL LED is not used.

How do I interpret the 7-segment display?

During normal operation, it shows the device number (e.g., A030 for Device 30) or register values. If an error occurs, it displays E and asterisks followed by the error code (e.g., E101).

What should I do if I see error code E101?

E101 indicates a communication error between indoor and outdoor units. Check wiring connections, ensure the COMM KIT is powered, and verify that the DIP switch settings match the system configuration.

Can I install the MIM-E02EN myself?

No. Installation must be performed by a qualified installer or service center to avoid electric shock, fire, or product damage. Always disconnect power before wiring.

Does the MIM-E02EN require separate power?

It is powered via the DC power cable (12V) supplied, which connects to the outdoor unit’s PCB. No separate power source is needed.

How do I know if the COMM KIT is communicating properly?

After power-on, wait for the Y-GRN LED to blink (outdoor communication) and the RED LED to blink (indoor communication). The 7-segment display will show the device number or register values in normal operation.

What is the maximum distance between the control unit and the COMM KIT?

The cable length must be within 1000 meters. Ensure proper wiring and avoid tension on the cables.

How do I reset the COMM KIT after changing DIP switch settings?

After changing DIP switch settings, you must reset the power to the COMM KIT (turn off and on) for the new settings to take effect.

USER MANUAL MIM-E02EN SAMSUNG

• Thank you for purchasing this Samsung Product.
- Before operating this unit, please read this installation manual carefully and retain it for future reference.

Black and white photo of a large, ripple wave or ocean wave with visible waves crashing against the sky (no text or symbols)

Safety Information

This installation manual explains how to install COMM KIT that connects control unit and outdoor unit. Please read this manual thoroughly before installing the product. (Please refer to appropriate installation for any optional product installation.)

WARNING

Hazards or unsafe practices that may result in severe personal injury or death.

CAUTION

Hazards or unsafe practices that may result in minor personal injury or property damage.

! Follow directions. Do NOT attempt
Make sure the machine is grounded to prevent electric shock.
Unplug the power plug from the wall socket.
Do NOT disassemble.

FOR INSTALLATION

WARNING

Consult qualified installer or service center for installation.

- If not, there is risk of product malfunction, water leakage, electric shock or fire.

Make sure to use the supplied cables.

- If not, there is risk of fire or damage to the product.

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Make sure that all wiring work is done by qualified person complying regional standards and instructions in this manual.

- If the installation is done by unqualified person, there is risk of product malfunction, electric shock or fire caused by incorrect installation.

Check if the installation was done properly according to the installation manual.

- There is risk of electric shock or fire if the product is installed incorrectly.

CAUTION

Make sure there is no tension to the cable during installation.

- Cable may get cut and cause fire.

When installing the product in hospitals or other places, make sure that the product does not interrupt with other products.

- Abnormal operation may occur.

Do not install the product in a place where flammable gas leaks or if there is possible chance of leakage.

- There is risk of fire or explosion.

Do not install the product in a place where it will be exposed to oil or vapor etc.

- If the product is used in a place where it is exposed to oil, vapor or sulphur dioxide, parts of the product may get damaged or product may function abnormally.

Do not install the product in a place where special spray or acid/alkali solution is used.

- There is risk of electric shock or abnormal operation.

Safety Information

For operation

WARNING

Do not attempt to repair, disassemble, or modify the product yourself.

- There is potential risk of product damage, electric shock or fire. When repair is needed, consult qualified installer or service center.

Contact the service center when you need to dispose the product.

Do not attempt to move or re-install the product that is already installed.

- If not, there is risk of electric shock or fire.

CAUTION

Do not allow water to enter the product.

- If not, there is risk of electric shock or fire.

Do not connect the power cable to the communication cable terminal.

- There is risk of fire.

COMM KIT Installation

Accessories

Item CO	MM KIT	DC power cable (12 V)	Communication cable	Flow switch	Screw (M4) Bracket
					Only for MIM-E02EN
Quantity	11211	1
Shape					###

Diagram of connection between COMM KIT and outdoor unit

MIM-E02EN (5kW Outdoor Unit)

Diagram of a mechanical or electrical component with an arrow indicating assembly or connection (no text or symbols present)

Diagram of a mechanical assembly with an arrow pointing to a component (no text or symbols present)

Line drawing of a single air conditioner unit with fan blades and control panel (no text or symbols)

1. Fix the COMM KIT PBA at case.
2. Open the control cover of the outdoor unit (5kW).
3. Mount the COMM KIT on the COMM KIT CASE with 1 screw noting the assembly direction.

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COMM KIT Installation

MIM-E02FN (8/16kW Outdoor Unit)

Diagram of a dual air conditioning unit with fan blades, showing internal airflow direction (no text or symbols)

1. Open the right hand of the front cabinet of outdoor unit (8/16kW).

2. Mount the COMM KIT on the case's EMI fixing hooks noting the assembly direction. (Attach the COMM KIT and the terminal of PCB DC power cable to be on the left side.)

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Connecting COMM KIT to the outdoor unit

MIM-E02EN (5kW Outdoor Unit)

1. Connect the DC power cable connector (Blue) to CN303 of SUB PCB in the EHS outdoor unit by using a DC power cable.
2. Disconnect the F1 and F2 wires from the terminal block in the outdoor unit. Then, connect the disconnected cable to a communication cable with red connector, and connect it to the communication connector of the COMM KIT.
3. Connect the F1-F2 terminal block to the communication block of the COMM KIT, by using the communication cable with the ring terminal.
4. Connect the communication cable from the indoor unit to the F1 and F2 terminal blocks in the outdoor unit.

graph TD
    A["Outdoor Unit"] --> B["DC Power cable"]
    B --> C["COMM KIT"]
    C --> D["Communication cable with ring terminal"]
    D --> E["F1"]
    E --> F["Communication terminal block of outdoor unit (2P)"]
    F --> G["F2"]
    G --> H["<Indoor Unit> Control Unit"]
    H --> I["Flow Switch"]
    I --> J["Communication cable with red connector"]
    J --> K["Sub PCB"]
    style A fill:#f9f,stroke:#333
    style H fill:#ccf,stroke:#333

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COMM KIT Installation

MIM-E02FN (8/16kW Outdoor Unit)

1. Connect the DC power cable connector (Blue) to CN12 of Main PCB in the EHS outdoor unit by using a DC power cable.
2. Disconnect the F1 and F2 wires from the terminal block in the outdoor unit. Then, connect the disconnected cable to a communication cable with red connector, and connect it to the communication connector of the COMM KIT.
3. Connect the F1-F2 terminal block to the communication block of the COMM KIT, by using the communication cable with the ring terminal.
4. Connect the communication cable from the indoor unit to the F1 and F2 terminal blocks in the outdoor unit.

graph TD
    A["COMM KIT"] --> B["Communication cable withringterminal"]
    B --> C["Flow Switch"]
    C --> D["DC Power cable"]
    D --> E["Main PCB"]
    F["Communication terminal block of outdoor unit (2P)"] --> G["Control Unit"]
    G --> H["Communication cable with red connector"]
    H --> I["Main PCB"]
    J["Outdoor Unit"] --> A
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333
    style F fill:#ffc,stroke:#333
    style G fill:#fcc,stroke:#333
    style H fill:#ffc,stroke:#333
    style I fill:#fcc,stroke:#333

CAUTION

• The control unit terminal block of COMM KIT (MIM-E02EN / MIM-E02FN) must be fixed with M3 sized screws, and its torque must be 0.5 to 0.75 N·m.
• The cable length between the control unit and the farthest COMM KIT must be within 1000 m.
• Be sure to switch off the power supply before installation.
• Wiring should be performed in accordance with the electric wiring regulations and must be placed in the wall so that users cannot touch them.

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Setting option switch

: No need of separate settings

How to set option switches

Settings	Dip S/W(SW4) Dip S/W(SW5)
	1 2 3 4
ON - Device 31			Not using Flow Switch	R-410A Model
OFF	Modbus Communication	Device 30	Using Flow Switch	R-32 Model

• The initial settings for option switches are OFF in SW 4 and SW 5.
• When operating two outdoor units with a single control unit, set No.2 of SW4 differently. (UNIT 1 OFF → Device 30, UNIT 2 ON → Device 31)

Example)

Simple line drawing of a fan or air conditioner unit with a dashed arrow pointing to the top-right corner (no text or symbols)

COMM KIT DIPS/W SW4 #2 : ON

COMM KIT DIP S/W SW4 #2 : OFF
OUTDOOR UNIT 2

- In order to change the setting of the option switch, reset the power of COMM KIT.

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Checking Operation

LED Display

1. When you reset the power supply and find that the communication between the COMM KIT and outdoor unit is valid, the Y-GRN LED blinks. (Please wait until the communication between the COMM KIT and the outdoor unit becomes normal.)

1. When the communication between the COMM KIT and indoor unit is detected as valid, the RED LED blinks.

NOTE

- YEL LED is not in use.

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7-SEGMENT display

1. When the power supply is initialized, the program codes appear.

• Examples of the program code: 17 89 A3 16

1. Then the tracking of COMM KIT will proceed as the following:

• Display in normal operation

- If the value of the register number 40011 is 0 or there is no signal, "A" and "0" appear on the first and second segments for 1 second.

→ Displays "3" and "0" or "1" for 1 second. (A030 device's 30-Dip S/W #2 is OFF, A031 device's 31-Dip S/W #2 is ON.)

- If the value of the register number 40011 is not 0, "A" is displayed on the first segment, and the hundreds digit number of the register is displayed on the second segment for 1 second.

→ The tens digit number is displayed on the first segment, and the unit digit number is displayed on the second segment for 1 second.

Example)

REGISTER NUMBER(#40011) DIP SWITCH(#2) SEGMENT
0 (or no entry) OFF
100 -

255 -

• Display when an error occurs

- "E" and "*" are displayed on the first and second segments for 1 second. → Displays "*" and "*" for 1 second. (This action will repeat until the error is corrected)

Example)

ERROR CODE SEGMENT
E101

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Error Codes

If the unit has some problems and does not work normally, error code is shown on the OUTDOOR UNIT MAIN PCB.

Display Explanation Error Source
E101	Communication error between the indoor and outdoor units (when indoor unit cannot receive signals)	COMM KIT OUTDOOR UNIT
E108	Duplicate channel addresses - overlapping of unit channel addresses on a system.	OUTDOOR UNIT
E109 Communication error due to indoor unit address incomplete.		COMM KIT OUTDOOR UNIT
E111	Modbus communication error (when COMM KIT cannot receive signals)	COMM KIT OUTDOOR UNIT
E162 EEPROM H/W ERROR COMM KIT
E177 Emergency Error		COMM KIT OUTDOOR UNIT
E201	COMM KIT/OUTDOOR UNIT communication error (Matching error)	OUTDOOR UNIT
E202 COMM KIT/OUTDOOR UNIT communication error (3 min) OUTDOOR UNIT
E203 Communication error between INVERTER and MAIN MICOM (6 min) OUTDOOR UNIT
E221 OUTDOOR UNIT temperature sensor error OUTDOOR UNIT
E231 Condenser temperature sensor error OUTDOOR UNIT
E251 Discharge temperature sensor error OUTDOOR UNIT
E320 OLP sensor error OUTDOOR UNIT
E403	Detection of OUTDOOR UNIT compressor freezing (During cooling operation)	OUTDOOR UNIT
E404	Protection of OUTDOOR UNIT when it is overload (during Safety Start, Normal operation state)	OUTDOOR UNIT
E407 Comp down due to high pressure OUTDOOR UNIT
E416 Discharge of a compressor is overheated OUTDOOR UNIT
E425	Power source line missing error (only for 3-phase model)	OUTDOOR UNIT
E440	Heating operation blocked (outdoor temperature over 35°C)	OUTDOOR UNIT
E441	Cooling operation blocked (outdoor temperature under 9°C)	OUTDOOR UNIT
E458	OUTDOOR UNIT fan1 error	OUTDOOR UNIT
E461 [Inverter] Compressor startup error OUTDOOR UNIT

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Display Explanation Error Source
E462 [Inverter] Total current error/PFC over current error OUTDOOR UNIT
E463 OLP is overheated OUTDOOR UNIT
E464 [Inverter] IPM over current error OUTDOOR UNIT
E465 Compressor V limit error OUTDOOR UNIT
E466 DC LINK over/low voltage error OUTDOOR UNIT
E467 [Inverter] Compressor rotation error OUTDOOR UNIT
E468 [Inverter] Current sensor error OUTDOOR UNIT
E469 [Inverter] DC LINK voltage sensor error OUTDOOR UNIT
E470 Outdoor unit EEPROM Read/Write Error OUTDOOR UNIT
E471 Outdoor unit EEPROM Read/Write Error(OTP error) OUTDOOR UNIT
E474	IPM(IGBT Module) or PFCM temperature sensor Error	OUTDOOR UNIT
E475 OUTDOOR UNIT fan2 error OUTDOOR UNIT
E483 H/W DC_Link Over Voltage Error OUTDOOR UNIT
E484	PFC Overload Error	OUTDOOR UNIT
E485	Input current sensor error	OUTDOOR UNIT
E488	AC Input Voltage Sensor Error	OUTDOOR UNIT
E500	IPM is overheated	OUTDOOR UNIT
E554	Gas leak error	OUTDOOR UNIT
E590	Inverter EEPROM CheckSum Error	OUTDOOR UNIT
E901	Water inlet (PHE) temperature sensor error(open/short)	OUTDOOR UNIT
E902	Water outlet (PHE) temperature sensor error(open/short)	OUTDOOR UNIT
E906	Refrigerant gas inlet (PHE) temperature sensor (open/short)	OUTDOOR UNIT
E911 Flow Swtich Open Error COMM KIT

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MEMO

Installation

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Installation

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