Hisense ADT-18UX4RCL4

Questions and Answers

M
margaretgarciaAug 10, 2025
Why is my Hisense Air Conditioner not cooling/heating properly?
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  acevedoelizabethAug 10, 2025
  There could be several reasons why your Hisense Air Conditioner isn't cooling or heating effectively. It might be due to a dirty outdoor heat exchanger (like the condenser), heating devices operating indoors, insufficient air tightness from frequent entry/exit, a blocked outdoor heat exchanger, or an incorrect temperature setting. To resolve this, try cleaning the outdoor unit's heat exchanger, removing any indoor heating devices, maintaining better air tightness, clearing any obstructions from the outdoor heat exchanger, and double-checking your temperature settings.
K
karenwilliamsAug 16, 2025
How to fix water leakage from Hisense Air Conditioner?
- S
  Shelley Salas PhDAug 17, 2025
  Water leakage from your Hisense Air Conditioner could be caused by a blocked or broken drainage pipe, or an improperly sealed refrigerant pipe joint. Try changing the drainage pipe. Also, re-wrap the refrigerant pipe joint to ensure it is tightly sealed.
M
Mrs. Jeanette Wells DVMAug 25, 2025
What to do if Hisense Air Conditioner can not start up?
- P
  Patrick FoxAug 25, 2025
  If your Hisense Air Conditioner won't start, the issue might stem from a power supply failure, a tripped breaker or blown fuse, low power voltage, incorrect remote controller settings, or a dead remote battery. You should inspect the power supply circuit, measure the insulation resistance to check for leakage, and look for defective contacts or current leaks in the power supply. Also, verify and reset the remote controller, and replace the batteries if needed.
S
Sara MartinezAug 31, 2025
Why does the compressor in my Hisense ADT-18UX4RCL4 start and stop frequently?
- A
  Amber NovakAug 31, 2025
  If the compressor in your Hisense Air Conditioner is starting and stopping frequently, it's possible that the air inlet or outlet is blocked. Remove any obstacles that may be causing the blockage.

Summary

2. Specifications

2.1 Duct Type Specifications

Technical specifications for duct type air conditioners, including electrical and capacity data.

2.2 Cassette Type Specifications

Technical specifications for cassette type air conditioners, covering electrical and capacity details.

2.3 Ceiling & Floor Type Specifications

Technical specifications for ceiling & floor type air conditioners, including electrical and capacity data.

2.4 Console Type Specifications

Technical specifications for console type air conditioners, detailing electrical and capacity information.

4. Electrical Data

Electrical Data Overview

Electrical specifications including power supply, voltage, and current requirements for outdoor units.

5. Capacities and Selection Data

5.1 Capacity Characteristic Charts

Cooling and heating capacity data based on varying indoor and outdoor temperature conditions.

8. ESP (External Static Pressure) Chart (Duct Type)

8.1 Duct Type ESP Charts

ESP charts for duct type models at various static pressures (0 Pa, 40 Pa, 47 Pa, 60 Pa, 120 Pa).

11. Wiring Diagram

11.1 Indoor Unit Electrical Wiring Diagrams

Electrical wiring diagrams for various indoor unit types: duct, cassette, ceiling & floor, console.

11.1 Outdoor Unit Electrical Wiring Diagrams

Electrical wiring diagrams for outdoor units across models.

11.3 Common Wiring Guidelines

Guidelines for wire sizing, electrical safety checks, and cable selection.

13. Piping Work and Refrigerant Charge

13.1 Maximum Pipe Length Allowed

Specifications for maximum allowed pipe length and height difference for refrigerant lines.

13.3 Air Tight Test Procedure

Procedure for conducting an air tight test on the refrigerant system using nitrogen gas.

13.4 Additional Refrigerant Charge Calculation

Instructions for calculating and adding refrigerant based on pipe length.

14. Control Mode

14.1 Indoor Unit Mode Control

Parameters and functions related to indoor unit operation modes: timer, sleep, and fan control.

14.2 Outdoor Unit Mode Control

Control functions and protection mechanisms for the outdoor unit, including overload and temperature protections.

16. Troubleshooting

16.1 Trouble Guide: Fault Code Identification

How to identify and interpret fault codes displayed on remote controllers and indoor unit panels.

16.2 Fault Code Table

A table listing fault codes, descriptions, possible causes, and recommended solutions.

19. Control Logic Description

19.2 Cooling Mode Logic

19.3 Heating Mode Logic

19.5 Evaporator Low-temperature Protection

19.6 Condenser High-temperature Protection

Hisense ADT-18UX4RCL4 Specifications

General

Refrigerant	R410A
Air Flow (Indoor Unit)	850 m³/h
Cooling Capacity	18000 BTU
Heating Capacity	18000 BTU
Power Supply	220-240V, 50Hz
Type	Split Type
Noise Level (Indoor Unit)	42 dB