Samsung AM090FNLDEH/EU

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Summary

SYSTEM AIRCONDITIONER

INDOOR UNIT

Specifies components and features of the indoor unit.

Precautions

1-1 Precautions for the Service

Guidelines for servicing the product, including part selection and connections.

1-3 Precautions for the Safety

General safety rules to follow during operation and repair to prevent hazards.

1-4 Precautions for Handling Refrigerant for Air Conditioner

Environmental and safety precautions for handling refrigerant.

1-5 Precautions for Welding the Air Conditioner Pipe

Guidelines for safely welding air conditioner pipes, including removing flammable materials.

1-6 Precautions for Additional Supplement of Air Conditioner Refrigerant

Precautions for accurately calculating and supplementing refrigerant to avoid product damage.

Product Specifications

2-1 Product Specifacations

Detailed technical specifications for various indoor unit models, including electrical, performance, and dimensions.

Disassembly and Reassembly

3-1 Indoor Unit

Step-by-step instructions for disassembling and reassembling indoor unit components.

Troubleshooting

4-2 Service Operation

Details special operational modes for service, including refrigerant charging and vacuum operations.

4-3 Troubleshooting

Provides methods to diagnose and resolve various error codes and symptoms.

4-4 Appropriate Measures for Different Symptom

Provides troubleshooting steps and solutions for various symptoms encountered with the units.

4-4-77 Inverter Overcurrent error

Steps to diagnose inverter overcurrent errors, checking installation, compressor, and PCB.

4-4-78 Overvoltage; Low voltage error

Troubleshooting over/low voltage errors, checking wiring and fuses.

4-4-79 DC Link voltage sensor error

Diagnosing DC link voltage sensor errors, checking power and reactor connections.

4-4-80 Liquid Compression Prevention Control

Troubleshooting liquid compression prevention control, checking sensors, EEV, and pipes.

4-4-87 Breakdown of an EEV(1 st)

How to diagnose EEV breakdown, checking connections and resistance.

4-4-88 Electronic expansion valve closing malfunction (2 nd stage)

Troubleshooting EEV closing malfunctions, checking wire connections and coil.

4-4-89 Electronic expansion valve opening malfunction (2 nd stage)

Steps to diagnose EEV opening malfunctions, checking connections, coil, and address settings.

4-4-90 Hydro Unit Water In Temperature Sensor Error (Open;Short)

Troubleshooting Hydro Unit water in temperature sensor errors, checking connectors and resistance.

4-4-91 Hydro Unit Water Out Temperature Sensor Error (Open;Short)

Diagnosing Hydro Unit water out temperature sensor errors, checking connectors and resistance.

4-4-92 Hydro Unit Water Tank Temperature Sensor Error (Open;Short)

Steps to troubleshoot Hydro Unit water tank temperature sensor errors, checking connectors and resistance.

4-4-93 Emergency Error (Check the Water Piping Equipment)

Diagnosing emergency errors related to water piping equipment, checking flow and temperatures.

4-4-94 Error to prevention from freezing and bursting of Heat Exchanger

Troubleshooting errors to prevent freezing and bursting of the heat exchanger.

4-4-95 Breakaway of Water Out temperature sensor

Diagnosing breakaway errors of the water out temperature sensor, checking mounting and resistance.

4-4-96 Breakaway of Flow switch

Troubleshooting breakaway errors of the flow switch, checking connections and water flow.

4-4-98 DC FAN Motor Feedback Error

Troubleshooting DC fan motor feedback errors, checking connectors and PCB.

PCB Diagram and Parts List

5-1 Indoor Unit

Diagrams and parts lists for various indoor unit types, including PCB layouts.

5-1-5 Indoor Unit Power PCB

Diagram and parts list for the Indoor Unit Power PCB.

5-1-6 Display PCB

Diagram and parts list for the Display PCB.

Wiring Diagram

6-1 Indoor

Wiring diagrams for various indoor unit types, detailing connections and components.

Reference Sheet

7-2 Pump-down Method

Instructions and precautions for performing pump-down operations on outdoor units.

7-2-1 Precautions for Pump-down

Safety precautions to be taken before, during, and after refrigerant pump-down.

7-2-2 For Single Installation of Outdoor Unit (Only One Outdoor Unit Installed)

Procedure for pump-down when only one outdoor unit is installed.

7-2-3 When Two or More Outdoor Units are Installed

Procedure for pump-down when two or more outdoor units are installed.

7-3 How to Put Refrigerant in Refrigerant Container