Hisense AMW3-20U4SZD1 User Manual

MULTI-SPLIT TYPE AIR CONDITONER
SERVICEMANUAL V:7.1 
●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
●OUTDOOR UNIT:
Hisense Corporation
AMW2-16U4SGC1
AMW2-16U4SGD1
AMW2-20U4SNC1
AMW2-20U4SZD1
AMW3-20U4SZD1
AMW3-24U4SAD1
AMW4-28U4SAD1
AMW
4
-
36U4SAD1
AMW3-20U4SZD
AMW3-24U4SZD
AMW3-24U4SKC
AMW4-28U4SKC
AMW4-36U4SAC
AMV-12UR4SA
AMV-18UR4SA
AS-09/12UR4SVETD5(TG5/TC5/TE5/TF5)
AS-18UR4SFATD5(TD5/TG5/TC5)

Hisense AMW3-20U4SZD1 Specifications

General

Power Supply	220-240V
Refrigerant	R410A
Energy Efficiency Ratio (EER)	3.21
Voltage	220-240V
Frequency	50Hz
Type	Split System
Cooling Capacity	20000 BTU
Air Flow	850 m³/h

Summary

1. OPERATING RANGE

2. SPECIFICATIONS

2-1. Unit specifications

Detailed specifications for indoor and outdoor units, covering capacity, electrical data, and dimensions.

2-2. Major component specifications

Specifications for key components like fan motors, compressors, and their electrical properties.

4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant flow diagram

Diagrams illustrating the refrigerant flow for cooling and heating cycles in different unit configurations.

4-2 Evacuation procedures

Step-by-step instructions for evacuating the refrigerant system, including pressure checks and leak testing.

5. ELECTRICAL DATA

5-1.Electrical wiring diagrams

Detailed electrical wiring diagrams for indoor and outdoor units, showing component connections and terminals.

5-2. Electric control

5-3. Sensor parameter

6. CONTROL MODEL

6-1 Indoor control mode

6-2 Outdoor mode control

7. TROUBLE SHOOTING

7-1- Error code

Displays and descriptions of error codes for indoor and outdoor units, aiding in fault diagnosis.

Service flow chart

Flowcharts to guide troubleshooting steps for common issues and system failures, starting from power supply checks.

8. CHECKING COMPONENTS

8-1. Check refrigerant system

8-2. Check parts unit