Carrier 38GL018G User Manual

Carrier 38GL018G

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38GL...G

38YY...G / 38YYS...G

INSTALLATION MANUAL

Table of Contents

Questions and Answers:

S
Stephen BergerAug 13, 2025
What to do if my Carrier 38GL018G compressor and fan of the outdoor unit will not start?
- C
  cscottAug 13, 2025
  If the compressor and fan of the outdoor unit won't start, begin by checking the mains power connections and ensuring the unit is switched to the ON position. If that doesn't work, wait for 3 minutes to see if the compressor cycling protection is active. Check and eliminate the cause (refer to “Additional installation instructions”). Also, examine the electrical connections for looseness or errors and repair them if necessary.
C
Christopher HernandezAug 17, 2025
Why does my Carrier Air Conditioner compressor run continuously?
- J
  Joanne HillAug 17, 2025
  If the compressor runs continuously, check the temperature selection. A low refrigerant charge could also be the cause, so verify and add refrigerant if needed. Additionally, air or other non-condensable gases in the circuit might be the issue, requiring you to drain the refrigerant, evacuate, and recharge the system. Finally, check for any obstructions and clean the filter.
M
markpriceAug 21, 2025
What to do if my Carrier 38GL018G discharge pressure is too high?
- W
  williamsbrianAug 21, 2025
  If the discharge pressure is too high, start by cleaning the outdoor coil or removing any obstructions. If the refrigerant charge is too high, drain some refrigerant. Also, if there is air or other non-condensable gases in the circuit, drain the refrigerant, evacuate, and recharge the system. Check the head pressure controller by connecting the fan directly and replace the HPC if necessary.
J
Jeffery AlvaradoAug 25, 2025
What to do if my Carrier 38GL018G compressor will not start, but outdoor fan is running?
- S
  Stephanie BaileyAug 25, 2025
  If the compressor won't start but the outdoor fan is running, check the compressor's electrical connections for looseness or errors and repair them. Also, the compressor might be burnt out, seized, or its protection device could be activated, so check for the cause and replace the compressor if necessary.
L
Lisa ClarkAug 28, 2025
What to do if my Carrier Air Conditioner has frequent ice build-up on outdoor coil during heating?
- D
  darlene54Aug 28, 2025
  If there's frequent ice build-up on the outdoor coil during heating, check if the outdoor fan is working correctly and repair if needed. Also, check the electrical connections between the indoor and outdoor units and repair any wrong connections.
A
Alexander FrancisAug 31, 2025
What to do if my Carrier 38GL018G Air Conditioner compressor starts, but stops due to its overtemperature protection?
- S
  Sydney MillerAug 31, 2025
  If the compressor starts but stops due to overtemperature protection, it could be due to a wrong refrigerant charge (excessive or low) or air/non-condensable gases in the circuit; in this case, drain refrigerant, evacuate, and recharge. Remove any obstructions. Check cause and repair. Check and replace. Check and remove obstructions.
C
Craig BrownSep 5, 2025
What to do if my Carrier 38GL018G Air Conditioner discharge pressure is too low?
- D
  Donald AdkinsSep 5, 2025
  If the discharge pressure is too low, it could be due to a low refrigerant charge, in which case you should add refrigerant. Another cause could be a dirty or obstructed outdoor coil, so clean or remove any obstructions. Also, a dirty indoor unit air filter can cause this issue, so clean the filter.
K
Kevin HarveySep 9, 2025
What causes outdoor fan cycling due to its overtemperature protection in Carrier 38GL018G?
- R
  Raymond WrightSep 9, 2025
  If the outdoor fan is cycling due to its overtemperature protection, the fan capacitor might be faulty, so replace it. Check connections and repair.

Carrier 38GL018G Specifications

General

Brand	Carrier
Model	38GL018G
Category	Air Conditioner
Language	English

Summary

General information

Unit installation

Provides essential steps and guidelines for installing the outdoor unit correctly.

Choosing the installation site

Warnings: avoid....

Refrigerant connections

Flaring the ends of the tubing

Connection to unit

Air purging

Electrical connections for 018 to 024 size

Electrical connections for 028 to 048 size

Pump Down and check the refrigerant charge

Pump-down

Check the refrigerant charge

Unit maintenance and troubleshooting

Troubleshooting

Diagnosing and resolving common issues with compressor, fan, and system operation.

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