Table of Contents
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MULTI-SPLIT TYPE AIR CONDITONER
SERVICE MANUAL
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INDOOR UNIT:
AMS-07UR4SN（VG/VT/VL/VQ/UP/UL/UQ/NS/ZC/ZA/NT/NK/NM/VM）4
AMS-09UR4SN（VG/VT/VL/VQ/UP/UL/UQ/NS/ZC/ZA/NT/NK/NM/VM）4
AMS-12UR4SN（VG/VT/VL/VQ/UP/UL/UQ/NS/ZC/ZA/NT/NK/NM/VM）4
AMS-07/09/12UR4SG（NK/NM/VT/VQ）4
AMS-09/12UR4SPSC4
AMS-18U4SV(VG/VQ/VL/VT/UP/UL/UQ/NT/NK/NM）4
AMD-09UX4SJD
AMD-12UX4SJD
AMD-18UX4SJD
AMC-12UX4SAA
AMC-18UX4SAA
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OUTDOOR UNIT:
AMW2-16U4SGC1
AMW2-16U4SGD1
AMW2-20U4SNC1
AMW2-20U4SZD1
AMW3-20U4SZD1
AMW3-24U4SAD1
AMW4-28U4SAD1
AMW4-36U4SAD1
Hisense Corporation
V:7.1
AMV-12UR4SA
AMV-18UR4SA
AS-09/12UR4SVETD5(TG5/TC5/TE5/TF5)
AS-18UR4SFATD5(TD5/TG5/TC5)
AMW3-20U4SZD
AMW3-24U4SZD
AMW3-24U4SKC
AMW4-28U4SKC
AMW4-36U4SAC
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Table of Contents
Troubleshooting
Related Manuals for Hisense AMW3-20U4SZD1
Summarization of Contents
2. SPECIFICATIONS
2-1 Unit Specifications
Detailed specifications for individual indoor and outdoor units.
2-2 Major Component Specifications
Technical specifications for key components like motors and compressors.
2-3 Other Component Specifications
Specifications for auxiliary components such as inductance, filters, and stepper motors.
3. OUTLINES AND DIMENSIONS
3-1 Indoor Unit Dimensions
Physical dimensions and layout details for indoor units.
3-2 Outdoor Unit Dimensions
Physical dimensions and layout details for outdoor units.
4. REFRIGERANT FLOW DIAGRAM
4-1 Refrigerant Flow Diagram
Schematic illustrating the refrigerant path for cooling and heating cycles.
4-2 Evacuation Procedures
Step-by-step guide for the refrigerant evacuation process.
4-3 Refrigerant Pipe Length and Height Difference
Guidelines for maximum refrigerant pipe length and height differences.
5. ELECTRICAL DATA
5-1 Electrical Wiring Diagrams
Wiring diagrams for various indoor and outdoor unit configurations.
5-2 Electric Control Details
Details on indoor and outdoor control boards and their functions.
5-3 Sensor Parameters
Parameter tables for temperature sensors used in the system.
6. CONTROL MODEL
6-1 Indoor Control Modes
Explanation of various indoor unit operating modes and functions.
6-2 Outdoor Mode Control
Control logic and protection mechanisms for the outdoor unit.
7. TROUBLE SHOOTING
7-1 Error Code Display
Information on how error codes are displayed on various unit types.
7-2 Outdoor Unit Fault Codes
Table of fault codes and their descriptions for outdoor units.
8. CHECKING COMPONENTS
8-1 Refrigerant System Check
Procedures for checking the refrigerant system and pressures.
8-2 Indoor Fan Motor Check
Procedures for checking the indoor fan motor's resistance and voltage.
8-3 Outdoor Fan Motor Check
Procedures for checking the outdoor fan motor's resistance and voltage.
8-4 Compressor Check
Procedures for checking compressor windings and identifying common errors.
8-5 Inductance Check
Information on checking inductance coils and their parameters.
8-6 Step Motor Check
Procedures for checking step motors used in the system.
8-7 Fuse Check
Guidance on checking fuses for continuity using a multimeter.
8-8 Capacitor Check
Method for testing capacitor health using a multimeter.
9. APPENDIX
9-1 AS Series Wall Mounted Type
Information specific to AS Series wall-mounted indoor units.
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