Table Of Contents - Samsung AC026NNNDKH Service Manual

System air conditioner, mini 4 way cassette series

Table of Contents

Contents

1. Precautions .................................................................................................. 1-1

1-1 Precautions for the Service ........................................................................................................................... 1-1

1-2 Precautions related to static electricity and PL ..................................................................................... 1-1

1-3 Precautions related to product safety ...................................................................................................... 1-2

1-4 Other precautions ............................................................................................................................................. 1-2

2. Product Specifications ................................................................................ 2-1

2-1 The Feature of Product ................................................................................................................................... 2-1

2-2 Product Specifications (cont.) ...................................................................................................................... 2-2

2-2 Product Specifications (cont.) ...................................................................................................................... 2-4

2-3 Accessories .......................................................................................................................................................... 2-5

3. Disassembly and Reassembly .................................................................... 3-1

3-1 Indoor unit ........................................................................................................................................................... 3-2

3-2 Outdoor unit .....................................................................................................................................................3-10

4. Troubleshooting ......................................................................................... 4-1

4-1 Setting an indoor unit address and installation option .................................................................... 4-1

4-1-1 Common steps for setting the addresses and options ........................................................ 4-1

4-1-2 Setting the indoor unit addresses ................................................................................................. 4-6

4-1-3 Setting the installation options in a batch ................................................................................. 4-7

4-1-4 Changing the addresses and options individually ................................................................. 4-9

4-2 Items to check before diagnostics ...........................................................................................................4-10

4-2-1 Four directions cassette type ........................................................................................................4-10

4-2-2 Test run mode and View mode ....................................................................................................4-11

4-2-3 Troubleshooting for outdoor unit ...............................................................................................4-12

4-2-4 Wired remote controller ..................................................................................................................4-14

4-3 Troubleshooting by symptoms .................................................................................................................4-16

4-3-1 Indoor temperature sensor (open/short) .................................................................................4-16

4-3-2 Indoor heat exchanger temperature sensor (open/short) ................................................4-17

4-3-3 Indoor FAN error .................................................................................................................................4-18

4-3-4 Communication error after finishing Tracking.......................................................................4-19

4-3-5 Indoor unit float sensor error ........................................................................................................4-20

4-3-6 EEPROM circuit failure ......................................................................................................................4-21

4-3-7 Outdoor unit is not powered on - Initial diagnosis ............................................................4-22

4-4 Troubleshooting by symptoms ................................................................................................................4-24

4-4-1 Communication error ......................................................................................................................4-24

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