Samsung AM240KXVAGH/EU User Manual

AIR CONDITIONER CONTENTS
SYSTEM AIR CONDITIONER
OUTDOOR UNIT
AM080/100/120/140/160/180/200/220/240/2606XV666
AM080/100/120/140/160/180/200/220JXVA66
AM140/160/180/200/220/240/260/280/300KXV666
AM080/100/120/140/160/180/200/220/240/260/280/300MXVA6C
1. Precautions
2. Product Specifications
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram and Parts List
6. Wiring Diagram
7. Cycle Diagram
8. Key Options
9. Test Operation

Samsung AM240KXVAGH/EU Specifications

General

Brand	Samsung
Model	AM240KXVAGH/EU
Category	Air Conditioner
Language	English

Summary

Precautions

1-3 Precautions for the Safety

Safety measures regarding wet hands, damaged power lines, multiple outlets, and grounding.

Product Specifications

2-2 Product Specifications

Detailed specifications for outdoor units, including type, power, capacity, and dimensions.

Disassembly and Reassembly

3-3 Caution at compressor exchange

Detailed steps and cautions for safely exchanging a compressor, including oil management.

Troubleshooting

Reversed Phase/No Phase Check (Outdoor Unit with 3 Phase power) – Display E425 for Problem

Diagnostic steps for reversed or missing phase power issues indicated by E425.

4-3-2 Main PCB has no power phenomenon

Troubleshooting steps when the main PCB shows no power (7-seg display is off).

4-3-3 Communication Error between Indoor and Outdoor Units during Tracking

Procedure to diagnose communication errors occurring during the tracking process.

4-3-16 MCU/MCU subcooler entrance/exit sensor error (Open/Short)

Troubleshooting for MCU or subcooler sensor errors due to open or short circuits.

4-3-17 Outdoor Temperature Sensor Error

Diagnosis and adjustment steps for errors related to the outdoor temperature sensor.

4-3-20 Compressor Discharge or Top 1/2 Temperature sensor error

Troubleshooting steps for errors with compressor discharge or top temperature sensors.

4-3-31 Comp. Down due to High Pressure Protection Control

Troubleshooting for compressor shutdown caused by high-pressure protection.

4-3-36 EVI EEV Open error

Diagnostic steps for EVI EEV open errors, including checks for leakage and coil status.

4-3-40 CH wire breaking error

Troubleshooting steps for CH wire breaking errors, including sensor checks and PCB replacement.

4-3-46 Compressor starting error

Troubleshooting steps for compressor starting errors, including PCB and compressor checks.

4-3-47 COMP Overcurrent error

Troubleshooting steps for compressor overcurrent errors, checking wiring and PCB status.

4-3-50 Fan Motor Overcurrent error

Troubleshooting steps for fan motor overcurrent errors, checking motor and PCB.

4-3-54 Inverter Overheat error

Troubleshooting steps for inverter overheat errors, focusing on heat sink and thermal paste.

Wiring Diagram

6-1 AM080/100/120/140/160/180/200/220FXV***, AM080/100/120/140/160/180/200/220JXV***, AM140/200/220KXVA***, AM140/180/200/220KXVG***, AM080KXVS***

Wiring diagram for various outdoor unit models including FXV, JXV, KXVA, KXVG, and KXVS series.

6-3 AM080JXVAFH

6-4 AM100/120JXVAFH

6-5 AM140/160/180/200JXVAFH

6-6 AM080/100/120/140/160/180/200/220JXVAJH

6-7 AM100/120/180/200MXVAFC, AM160/180/260/280MXVAGC

Cycle Diagram

Key Options

Test Operation

9-1 Auto Trial Operation

Synopsis and flow chart for performing the Auto Trial Operation for system verification.

9-1-1 Auto Trial Operation Synopsis

9-1-2 Auto Trial Operation functions

9-1-3 How to troubleshoot of the "Undetermined"

Troubleshooting steps for 'Undetermined' errors related to temperature sensors.

Indoor Unit Temperature sensor

2) Outdoor Unit Temperature sensor

3) High / Low pressure sensor (Module installed)

4) Pressure sensor (Independent installation)

5) Service Valve

6) Abnormal operation of the Compressor

Troubleshooting for compressor abnormal operation, including current and PCB checks.

7) Cycle status

8) 4Way Valve

9) EVI EEV

10) Main EEV

9-2 Amount of refrigerant automatically checking

Procedure for automatically checking the amount of refrigerant in the system.