Samsung AC120RN4DKG User Manual

AIR CONDITIONER CONTENTS
SYSTEM AIR CONDITIONER
SINGLE for Europe (R-32, Heat Pump)
1. Precautions
2. Product Specifications
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram
6. Wiring Diagram
7. Reference Sheet
Model :
AC026RN1DKG
AC035RN1DKG
AC026RNNDKG
AC035RNNDKG
AC052RNNDKG
AC071RNNDKG
AC052RN4DKG
AC071RN4DKG
AC100RN4DKG
AC120RN4DKG
AC140RN4DKG
AC071RN4PKG
AC100RN4PKG
AC120RN4PKG
AC140RN4PKG
AC026RNLDKG
AC035RNLDKG
AC052RNLDKG
AC071RNLDKG
AC035RNMDKG
AC052RNMDKG
AC071RNMDKG
AC100RNMDKG
AC120RNMDKG
AC140RNMDKG
AC026RNADKG
AC035RNADKG
AC052RNADKG
AC071RNADKG
AC052RNCDKG
AC071RNCDKG
AC100RNCDKG
AC120RNCDKG
AC140RNCDKG
AC100RNTDKG
AC026RNJDKG
AC035RNJDKG
AC052RNJDKG
INDOOR UNIT OUTDOOR UNIT
AC026RXADKG
AC035RXADKG
AC052RXADKG
AC071RXADKG
AC100RXADKG
AC100RXADNG
AC120RXADKG
AC120RXADNG
AC140RXADKG
AC140RXADNG

Samsung AC120RN4DKG Specifications

General

Brand	Samsung
Model	AC120RN4DKG
Category	Air Conditioner
Language	English

Summary

Precautions

1-1 Precautions for the Service

1-3 Precautions related to product safety

Safety measures regarding power cords, plugs, cables, outlets, and grounding to prevent electric shock.

Product Specifications

2-5 Product Specifications

Detailed specifications for Slim 1Way indoor and outdoor units, including performance, size, and harness.

Mini 4 way

Detailed specifications for Mini 4 way units, covering performance, size, and harness details.

4Way CST

Detailed specifications for 4Way CST units, including performance, size, and harness information.

360 CST

Detailed specifications for 360 CST units, including performance, size, and harness information.

Console

Detailed specifications for Console units, including performance, size, and harness information.

MSP Duct

Detailed specifications for MSP Duct units, including performance, size, and harness details.

C-RAC

Detailed specifications for C-RAC units, including performance, size, and harness information.

Ceiling

Detailed specifications for Ceiling units, including performance, size, and harness information.

Big Ceiling

Detailed specifications for Big Ceiling units, including performance, size, and harness information.

Disassembly and Reassembly

Necessary Tools

3-1 Indoor unit

Disassembly and reassembly steps for AC026RN1DKG and AC035RN1DKG indoor units.

3-2 Outdoor unit

Disassembly and reassembly steps for AC026RXADKG and AC035RXADKG outdoor units.

Troubleshooting

4-1 Setting an indoor unit address and installation option

Guide for setting indoor unit address and installation options using the remote controller.

4-1-4 Setting an indoor unit installation option (Suitable for the condition of each installation location)

How to set indoor unit installation options based on location, covering SEG codes.

4-1-6 Option code for each model

4-2 Items to check before diagnostics

Explains how to use test run and view modes for system status information.

4-2-3 Four directions cassette type

4-2-4 Outdoor Unit

Troubleshooting guide for outdoor unit errors, including error codes and meanings.

4-2-5 Wired remote controller

4-3 Troubleshooting by symptoms

Troubleshooting procedures based on specific symptoms and error codes.

4-3-1 Indoor temperature sensor (open/short)

4-3-2 Indoor heat exchanger temperature sensor (open/short)

4-3-3 Indoor FAN error

Troubleshooting steps for indoor fan errors, checking motor operation and voltage.

4-3-4 Communication error after finishing Tracking

Troubleshooting steps for indoor/outdoor communication errors, checking signals and PCBs.

4-3-5 Indoor unit float sensor error

Troubleshooting steps for indoor unit float sensor errors, checking water levels and drain pump.

4-3-6 EEPROM circuit failure

4-3-7 E407

Troubleshooting for E407 error (High Pressure Switch Error), checking connector and pressure.

4-3-8 When the outdoor unit power is not ON - Initial Diagnosis : 3-phase products

Step-by-step diagnosis for outdoor unit power issues on 3-phase products.

4-3-9 Indoor/outdoor communication error (1min.) (Error Code : E202)

Troubleshooting steps for indoor/outdoor communication errors (E202), checking wires and PCBs.

4-3-10 Communication error between outdoor unit INV ↔ MAIN MICOM (1 min.)(Error Code: E203)

Troubleshooting steps for communication errors between outdoor unit INV and MAIN MICOM (E203).

4-3-11 Outdoor sensor error (Error Code : E221, E231, E251, E320)

Troubleshooting outdoor sensor errors (E221, E231, E251, E320), checking connections and resistance.

4-3-12 Reverse phase / Loss phase detection (3-phase outdoor unit) (Error Code : E425 )

Troubleshooting reverse or loss phase errors (E425) in 3-phase outdoor units using a phase tester.

4-3-13 Compressor down due to freezing control (Error Code : E403)

Troubleshooting compressor down errors (E403) due to freezing control, checking fans and sensors.

4-3-14 Outdoor unit Fan error (Error Code : E458, E475)

Troubleshooting outdoor unit fan errors (E458, E475), checking connectors, voltage, and PCB.

4-3-15 Compressor starting error / rotation error (Error Code : E461, E467)

Troubleshooting compressor start/rotation errors (E461, E467), checking power and resistance.

4-3-16 Full current error / PFC over-current error (Error Code : E462, E484)

Troubleshooting full current or PFC over-current errors (E462, E484), checking installation and valves.

4-3-17 IPM over current error (Error Code : E464)

Troubleshooting IPM over current errors (E464), checking installation, wiring, and service valves.

4-3-18 DC LINK over-current / low-voltage error (Error Code : E466)

Troubleshooting DC LINK errors (E466, E483, E488), checking power, reactor, fuses, and terminal blocks.

4-3-19 Gas leakage error (Error Code : E554)

Troubleshooting gas leakage errors (E554), checking compressor, wiring, installation, and refrigerant.

4-3-20 Pipe blockage error (Error Code : E422)

Troubleshooting pipe blockage errors (E422), checking service valves, piping, EEV, and sensors.

Outdoor unit freezing detection (at the stop of the compressor) : E403

PCB Diagram and Parts List

5-1 Indoor Unit

5-1-1 MAIN PCB

5-2 Outdoor Unit

5-2-1 MAIN PCB

5-2-2 INVERTER PCB

Wiring Diagram

6-1 Indoor Unit

6-2 Outdoor unit