Hisense AMW2-12U4RRA User Manual

Hisense AMW2-12U4RRA

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TECHNICAL & SERVICE MANUAL V5.0

—MULTI-SPLIT TYPE AIR CONDITIONERS

R410A

Refrigerant

R410A

Refrigerant

R410A

Refrigerant

R32

Refrigerant

Models:

<Outdoor Unit>

AMW2-12U4RRA

AMW2-14U4RRA

AMW2-18U4RXA

AMW3-21U4RFA

AMW3-24U4RFA

AMW3-24U4RAA

AMW4-27U4RAA

AMW4-36U4RAA

AMW5-42U4RTA

Table of Contents

Questions and Answers:

E
Emily HaynesAug 6, 2025
Why my Hisense AMW2-12U4RRA Air Conditioner can not start up?
- J
  johnsonchristopherAug 6, 2025
  If your Hisense Air Conditioner isn't starting, several factors could be at play. First, check the power supply circuit to ensure it's functioning correctly. A tripped breaker or blown fuse could also be the culprit. Also, measure the insulation resistance to ground to check for any leakage. Low power voltage can also prevent startup. Verify the remote controller settings and try setting it again, and replace the batteries in the remote controller.
E
elizabeth11Aug 14, 2025
What to do if my Hisense AMW2-12U4RRA has poor cooling/heating?
- C
  Carl RussoAug 14, 2025
  If your Hisense Air Conditioner is not cooling or heating effectively, start by cleaning the heat exchanger of the outdoor unit, such as the condenser. Ensure there are no heating devices indoors that might be affecting the temperature. Maintain good air tightness indoors by minimizing how often people enter and exit. Check for and remove any obstructions blocking the outdoor heat exchanger. Finally, double-check and reset the temperature to the desired setting.
P
Paula SmithAug 21, 2025
Why does the compressor of my Hisense AMW2-12U4RRA Air Conditioner start and stop frequently?
- A
  Anthony ReevesAug 21, 2025
  If your Hisense Air Conditioner's compressor starts and stops frequently, it's likely that the air inlet or outlet is blocked. Remove any obstacles to ensure proper airflow.
B
Bonnie VillegasAug 28, 2025
How to fix water leakage in Hisense AMW2-12U4RRA?
- D
  David MillerAug 29, 2025
  If your Hisense Air Conditioner is leaking water, the drainage pipe may be blocked or broken, in this case, change drainage pipe. Alternatively, the wrap of the refrigerant pipe joint might not be completely sealed; re-wrap it tightly.

Hisense AMW2-12U4RRA Specifications

General

Type	Split Air Conditioner
Cooling Capacity	12000 BTU
Refrigerant	R410A
Energy Efficiency Ratio (EER)	3.21
Voltage	220-240V
Noise Level	42 dB(A)
Weight	9 kg

Summary

SAFETY SUMMARY

Important Safety Information

Covers important notices, DANGER, WARNING, CAUTION, and NOTE sections for safe operation.

GENERAL

Features

Describes key technologies like Twin Rotary DC Inverter Compressor and operation modes.

Product Lineup

Overview of outdoor unit types and their corresponding capacities.

Nomenclature

Explains the model name structure and its components.

Unit Installation

Details on connecting indoor and outdoor units.

Working Range

Covers power supply requirements and operating temperatures.

Product Appearance

Visuals of different outdoor unit types and capacities.

SPECIFICATIONS

Specifications

Detailed technical data for various models, including performance and electrical characteristics.

OUTLINES AND DIMENSIONS

Outdoor Unit Dimensions

Dimensional drawings for various outdoor unit models.

ELECTRICAL DATA

Electrical Data

Details on power supply, voltage, and current for models.

CAPACITIES AND SELECTION DATA

Capacity Characteristic Charts

Cooling and heating capacity data based on temperatures.

Piping Length Correction Factor

Factors for adjusting capacity based on pipe length and height.

Correction Factors for Defrosting Operation

Adjustments for heating capacity during defrost cycles.

SOUND PRESSURE DATA

Sound Pressure Data

Noise level charts for various models.

REFRIGERANT CYCLE

Refrigerant Cycle

Diagrams illustrating refrigerant flow for different models.

WIRING DIAGRAM

Electrical Wiring Diagrams

Wiring schematics for different models.

Control Board Components

Visual identification of components on control boards.

Board Component Identification

Identifies components on main, drive, and sensor boards.

Model-Specific Wiring

Wiring details for 42K main and drive boards.

Maintenance Board Details

Details of the maintenance board.

Common Wiring

General wiring diagrams and wire size recommendations.

FIELD SETTING

DIP Setting

How to configure outdoor unit dip switches.

Running Parameter Query

How to check operational parameters via the digital display.

PIPING WORK AND REFRIGERANT CHARGE

Maximum Pipe Length Allowed

Specifies maximum pipe lengths for different models.

Installation Tools and Flow Chart

Lists required tools and step-by-step installation guide.

SENSOR PARAMETER

Outdoor Compressor Discharge Temperature Sensor

Parameters for the discharge temperature sensor.

Other Indoor/Outdoor Unit Sensors

Parameters for other sensors in indoor and outdoor units.

TROUBLESHOOTING

Trouble Guide

Common malfunctions and their solutions.

Fault Code Interpretation

Procedure for interpreting fault codes on control boards.

Outdoor Unit Fault Codes

Table of outdoor unit fault codes, descriptions, and solutions.

Drive Fault Codes

Table of drive fault codes and solutions for various models.

Limitation Codes

Codes indicating operational states, not faults.

CHECKING COMPONENTS

Refrigerant System Check

Procedure for checking the refrigerant system using pressure gauges.

Parts Unit Identification

Lists DC motor and compressor models.

Component Testing Procedures

How to test compressor, inductance, stepper motor, fuse, and capacitor.

DISASSEMBLY AND ASSEMBLY

Compressor and Motor

Steps for disassembling and assembling outdoor unit components.

Compressor and Motor (42K)

Disassembly and assembly steps specific to the 42K model.

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