Samsung AM024FNLDCH/AA User Manual

SYSTEM AIRCONDITIONER CONTENTS
SYSTEM AIRCONDITIONER
INDOOR UNIT
AM007/009/012FN1DCH/AA
AM009/012/018/020FNNDCH/AA
AM009/012/018/024/030/036/048FN4DCH/AA
AM007/009/012FNLDCH/AA
AM018/024FNLDCH/AA
AM030/036/048FNLDCH/AA
AM018/024FNMDCH/AA
AM030/036FNMDCH/AA
AM048FNMDCH/AA
AM007/009/012/018/020/024FNTDCH/AA
AM007/009/012/018/020/024HNQDCH/AA
AM036/048FNHDCH/AA
AM076/096FNHDCH/AA
AM018/024FNCDCH/AA
AM048/096HNPDCH/AZ
AM007/009/012/015/018JNMDCH/AA
AM024/027/030/036/048JNHDCH/AA
AM036/048JNCDCH/AA
AM006/009/012/018/024JNFDCH/AA
AM006/009/012/018/024JNGDCH/AA
AM072/096JNESCH/AA
AM054KNMDCH/AZ
AM007/009/012/018/020/024KNQDCH/AZ
AM007/009/012/018/020/024KNTDCH/AZ
AM005/007/009/012/015/018/024/028MNVDCH/AA
AM007/009/012NN1DCH/AA
AM009/012/018/024/030/036/048KN4DCH/AA
AM007MNMDCH/AA
AM009MNMDCH/AA
AM012MNMDCH/AA
AM015MNMDCH/AA
AM018MNMDCH/AA
AM024MNMDCH/AA
AM027MNMDCH/AA
AM030MNMDCH/AA
AM036MNMDCH/AA
AM048MNMDCH/AA
AM032MNQDCH/AA
AM007NN1DCH/AZ
AM009NN1DCH/AZ
AM012NN1DCH/AZ
AM018NN1DCH/AZ
AM024NN1DCH/AZ
1. Precautions
2. Product Specifications
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram and Parts List
6. Wiring Diagram
7. Reference Sheet

Samsung AM024FNLDCH/AA Specifications

General

Brand	Samsung
Model	AM024FNLDCH/AA
Category	Air Conditioner
Language	English

Summary

SYSTEM AIRCONDITIONER

INDOOR UNIT

Precautions

Precautions for the Service

Guidelines for safe and effective service procedures for electrical parts and handling.

Precautions for the Static Electricity and PL

Precautions for the Safety

Essential safety measures for electrical connections, grounding, and handling.

Precautions for Handling Refrigerant for Air Conditioner

Environmental and safety considerations for handling refrigerant release and containers.

Product Specifications

Disassembly and Reassembly

Indoor Unit

PCB Diagram and Parts List

Troubleshooting

Check-up Window Description

Service Operation

What to check before diagnosis

Guides on interpreting LED lamp displays and error codes for troubleshooting indoor unit issues.

Number Display Method (Outdoor Unit, MCU, Cable remote control, wall-mount, etc.)

Diagnosis and Adjustment (Error Code)

Detailed list of error codes related to communications, settings, and hardware for indoor units.

Main PCB has no power phenomenon

Troubleshooting steps for identifying and resolving issues when the main PCB has no power.

Indoor Unit ROOM sensor Error (Open/Short)

Diagnostic steps for indoor unit room sensor errors, including resistance checks.

Indoor unit EVAP IN sensor Error (Open/Short)

Diagnostic steps for indoor unit EVAP IN sensor errors, including resistance checks.

Indoor EVAP OUT sensor Error (Open/Short)

Diagnostic steps for indoor unit EVAP OUT sensor errors, including resistance checks.

Indoor Heat Exchanger's EVAP IN sensor dislocation error

Indoor Heat Exchanger's EVA OUT sensor dislocation error (Open/Short)

Simultaneous Indoor Heat Exchanger's EVA IN, OUT sensor dislocation error (Open/Short)

Electronic Expansion Valve opening malfunction (2nd stage) - E 135

Diagnostic steps for electronic expansion valve opening malfunctions, including EEV coil and wire checks.

Problem with EEV closure (2nd)

Troubleshooting steps for EEV closure problems, including coil and resistance checks.

Detection of Floating Switch of Indoor Unit's Drain Pump

Troubleshooting for drain pump floating switch errors, including resistance and water level checks.

The operational error of Indoor Unit's Fan Motor

Diagnostic steps for indoor unit fan motor operational errors, including RPM feedback and connection checks.

EEPROM error

Troubleshooting steps for EEPROM errors, including PCB replacement and option re-entry.

Simultaneous opening of Cooling/heating MCU SOL Valves 1st/2nd

Error due to incorrect Indoor Unit Power/Communication Cable Connection

Steps to diagnose and fix errors related to incorrect indoor unit power or communication cable connections.

SPI Feedback Error

Outdoor Unit Pipe Inspection Error

Communication Error between Indoor and Outdoor Units during Tracking

Troubleshooting for communication errors during tracking between indoor and outdoor units.

Communication Error between Indoor and Outdoor Units after Tracking

Troubleshooting for communication errors after tracking, including PCB address overlaps.

Communication error between main and sub Unit of outdoor unit or between outdoor units

Communication Error between MCU and Outdoor Unit

Troubleshooting for communication errors between MCU and outdoor units, including PCB address checks.

Internal Communication error of the Outdoor Unit C-Box

Internal PCB Communication error of the Outdoor Unit C-Box

Communication Error between MCU and Outdoor Unit after Tracking is Completed

Troubleshooting for MCU and outdoor unit communication errors after tracking completion.

Outdoor Temperature Sensor Error

Diagnostic steps for outdoor temperature sensor errors, including resistance checks.

Outdoor Temperature dislocation error

Diagnostic steps for outdoor temperature sensor dislocation errors.

Cond Out Temperature Sensor Error (Open/Short)

Diagnostic steps for Cond Out Temperature Sensor errors.

Outdoor Cond Out sensor breakaway error

Diagnostic steps for Outdoor Cond Out sensor breakaway errors.

Digital Compressor Discharge Temperature Sensor Error (OPEN/SHORT)

Diagnostic steps for digital compressor discharge temperature sensor errors.

Constant Rate Compressor Discharge Temperature Sensor Error (OPEN/SHORT)

Diagnostic steps for constant rate compressor discharge temperature sensor errors.

Compressor Discharge or Top 1/2 Temperature sensor error

Diagnostic steps for compressor discharge or top temperature sensor errors.

Dislocation error of Compressor SUMP Temperature (oil temperature) Sensor

Diagnosis for errors related to the compressor SUMP temperature sensor.

Suction Temperature sensor breakaway error

Diagnostic steps for suction temperature sensor breakaway errors.

SUMP Temperature Sensor Error (OPEN/SHORT)

Diagnostic steps for SUMP temperature sensor errors.

High Pressure sensor error (Open/Short)

Diagnostic steps for high pressure sensor errors, including voltage checks.

Low Pressure sensor error (Open/Short)

Diagnostic steps for low pressure sensor errors, including voltage checks.

Suction-2 Temperature Sensor Error (OPEN/SHORT)

Diagnostic steps for suction-2 temperature sensor errors.

Comp. Down due to High Pressure Protection Control

Troubleshooting for compressor shutdown due to high pressure protection.

Comp. Down due to Low Pressure Protection Control

Troubleshooting for compressor shutdown due to low pressure protection.

Sump Sensor Error Due to Protection Control

Troubleshooting for sump sensor errors related to protection control.

Comp. Down due to Compressor Discharge Temperature sensor

Troubleshooting for compressor shutdown due to discharge temperature sensor issues.

3-phase Input Wiring error

Troubleshooting steps for 3-phase input wiring errors, including power and fuse checks.

Comp. Down by Compression Ratio Control

Troubleshooting for compressor shutdown related to compression ratio control.

EVI EEV Open error

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

Refrigerant Leakage Error

Troubleshooting refrigerant leakage errors and sensor malfunctions.

Prohibition of the operation of Compressor due to Ooutdoor Temperature

High Pressure Standard Not Met before Air Conditioning (Inability to Re-operate)

Troubleshooting for high pressure standard not met errors before air conditioning operation.

CCH Malfunction and Sump Sensor Miswiring Error

Troubleshooting for CCH malfunctions and sump sensor miswiring errors.

Fan starting error

Troubleshooting steps for fan starting errors, including resistance and connection checks.

Fan lock error

Troubleshooting for fan lock errors, including foreign objects and motor checks.

Momentary Blackout error

Outdoor Fan Motor overheating

Troubleshooting for outdoor fan motor overheating, including connection and PCB checks.

Outdoor Unit Fan Motor RPM Error

Troubleshooting for outdoor unit fan motor RPM errors, focusing on revolution counts and motor operation.

Fan IPM Overheat error

Troubleshooting steps for Fan IPM overheat errors, including heat sink and grease checks.

Over-Voltage Error of an Outdoor Fan Motor

Counter-Rotation Error of an Outdoor Fan Motor

Compressor Excess Current Error

Compressor starting error

Inverter Overcurrent error

Overvoltage / Low voltage error

DC Link voltage sensor error

Liquid Compression Prevention Control

Fan Motor Overcurrent error

Input / Output Current sensor error

Outdoor Fan PCB Overvoltage / Low voltage error

Hall IC(Fan) error

Inverter Overheat error

Model mismatching of Indoor unit.

Breakdown of an EEV(1st)

Breakdown of an EEV closure

Electronic expansion valve closing malfunction (2nd stage)

Electronic expansion valve opening malfunction (2nd stage)