Carrier 38QHG018D8S Series User Manual

• D

  Derek WadeJul 25, 2025

  Why is my Carrier Air Conditioner not cooling properly?

  

  Same questionReply

  • T

    Teresa PetersonJul 25, 2025

    If your Carrier Air Conditioner isn't cooling well, several factors could be the cause. First, check if the temperature setting is higher than the room temperature and lower it if needed. Ensure the air filter and the heat exchangers on both indoor and outdoor units are clean. Remove any blockages from the air inlet or outlet of either unit. Also, close all doors and windows, and reduce heat sources in the room, such as computers or electronics. If the SILENCE function is on, turn it off. Finally, low refrigerant could be the issue; in this case, check for leaks and refill the refrigerant.

    

    Reply
• I

  irobertsAug 1, 2025

  What to do if my Carrier 38QHG018D8S Air Conditioner is not working?

  

  Same questionReply

  • J

    Jacqueline SheaAug 1, 2025

    If your Carrier Air Conditioner isn't working, here's what to check: First, verify that there isn't a power failure and that the unit is turned on. Inspect the fuse and replace it if it's burned out. Ensure the remote control batteries aren't dead and replace them if needed. If the unit has been recently restarted, the 3-minute protection feature might be activated, so wait three minutes. Also, check if the timer is activated and turn it off if necessary.

    

    Reply
• D

  danielleruizAug 10, 2025

  Why does my Carrier 38QHG018D8S start and stop frequently?

  

  Same questionReply

  • J

    Jillian HowellAug 10, 2025

    If your Carrier Air Conditioner starts and stops frequently, it could be due to several reasons. There might be too much or too little refrigerant in the system, so check for leaks and recharge the system with refrigerant. Another possibility is that incompressible gas or moisture has entered the system; in this case, evacuate and recharge the system with refrigerant. The compressor could be broken and may need replacement. Lastly, the voltage might be too high or too low, requiring the installation of a manostat to regulate it.

    

    Reply
• J

  Jerry SolomonAug 16, 2025

  How to improve heating performance of Carrier 38QHG018D8S?

  

  Same questionReply

  • M

    Melanie SwansonAug 16, 2025

    If your Carrier Air Conditioner isn't heating well, consider these points: If the outdoor temperature is extremely low, try using an auxiliary heating device. Make sure all doors and windows are closed to prevent cold air from entering. Also, check for refrigerant leaks, as low refrigerant due to a leak or long-term use can cause poor heating performance. If necessary, reseal any leaks and top off the refrigerant.

    

    Reply

Carrier 38QHG018D8S Series Specifications

General

Heating Seasonal Performance Factor (HSPF)	10
Refrigerant	R410A
Compressor Type	Inverter
Series	38QHG018D8S
Cooling Capacity	18000 BTU/h
Voltage	208/230V
Power Supply	60 Hz, 1Ph

Summary

Safety Precautions

Page: 3

Warnings for Product Use

Important warnings related to operating the air conditioner safely, including potential hazards and necessary actions.

Electrical Warnings

Safety precautions concerning power cords, plugs, outlets, wiring, and grounding to prevent shock or fire.

Warnings for Product Installation

Critical warnings and guidelines for the correct installation of the unit to prevent leakage, shock, or fire.

Refrigerant and Disposal Safety

Precautions for handling refrigerants and guidelines for the proper environmental disposal of the unit.

Unit Specifications and Features

Page: 7

Indoor Unit Display and Codes

Explains the indoor unit's display window and deciphers various operational and error codes shown.

Operating Temperature Ranges

Details the acceptable room and outdoor temperatures for optimal unit performance and safety.

Other Unit Features

Describes additional functionalities like Auto-Restart, Anti-mildew, Breeze Away, and Active Clean.

Airflow Angle and Manual Operation

Instructions for adjusting airflow angles and operating the unit manually without the remote control.

Care and Maintenance

Page: 11

Cleaning Procedures

Step-by-step instructions for cleaning the indoor unit and its air filters safely and effectively.

Maintenance Reminders and Storage

Information on filter reminders, long-term non-use procedures, and pre-season inspection.

Troubleshooting

Page: 13

Safety During Troubleshooting

Essential safety warnings and instructions to turn off the unit before attempting any troubleshooting.

Common Operational Problems

Addresses common issues like unit not starting, mode changes, mist emissions, and unusual noises.

Performance and Error Indicators

Covers poor cooling, unit unresponsiveness, and how to interpret error codes and lamp indicators.

Related product manuals

Carrier 38QHG012D8S Series

60 pages

Carrier 38QHG024D8S Series

60 pages

Carrier 38QHG009D8S Series

60 pages

Carrier 38QH30-H

22 pages

Carrier 38QH36-H

22 pages

Carrier 38QHC012ESWP

48 pages

Carrier 38QHST24-708

58 pages

Carrier 38QHC012DS series

99 pages

Carrier 38QHC018DS series

99 pages

Carrier 38QHB09D8S Series

36 pages

Carrier 38QHC018D8S Series

36 pages

Carrier 42QHC012ES 38QHC012DS

45 pages