Carrier 38GL036G User Manual

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38GL...G

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

INSTALLATION MANUAL

Table of Contents

Questions and Answers:

C
Christina StoneAug 13, 2025
What to do if my Carrier 38GL036G compressor and fan of the outdoor unit will not start?
- J
  James PayneAug 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.
M
Melissa VasquezAug 17, 2025
Why does my Carrier 38GL036G compressor run continuously?
- J
  Jason PittmanAug 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.
C
coxjefferyAug 21, 2025
What to do if my Carrier 38GL036G Air Conditioner discharge pressure is too high?
- Z
  Zachary WebsterAug 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
Jeremy ShieldsAug 25, 2025
What to do if my Carrier 38GL036G Air Conditioner compressor will not start, but outdoor fan is running?
- J
  Joshua MuellerAug 26, 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.
J
James RobertsonAug 28, 2025
What to do if my Carrier Air Conditioner has frequent ice build-up on outdoor coil during heating?
- K
  Kelli WilliamsAug 29, 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.
S
Stacey LittleSep 1, 2025
What to do if my Carrier 38GL036G Air Conditioner compressor starts, but stops due to its overtemperature protection?
- Q
  qschmidtSep 1, 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
Corey HansonSep 5, 2025
What to do if my Carrier Air Conditioner discharge pressure is too low?
- N
  Nathan MartinSep 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.
M
Mark MarquezSep 8, 2025
What causes outdoor fan cycling due to its overtemperature protection in Carrier Air Conditioner?
- D
  Dawn ScottSep 8, 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 38GL036G Specifications

General

Refrigerant	R-410A
Compressor Type	Rotary
Phase	1
Type	Mini-Split
Cooling Capacity	36000 BTU/h
Voltage (V)	208/230

Summary

Installation Manual

Installer and Technician Attention

Dimensions and Weight

Connections

Information on pipe and electrical connections between units.

Minimum Clearances

Operating Limits

Environmental conditions under which the unit can operate safely.

General Information

Unit Installation

Procedural guidance for installing the outdoor unit.

Choosing the Installation Site

Warnings: Avoid

Refrigerant Connections

Refrigerant Tubing Preparation

Tightening Torque Specifications

Required torque values for flare fittings to ensure leak-free connections.

Air Purging Procedure

Electrical Connections (018-024 Size)

Electrical Connections (028-048 Size)

Electrical Connections Summary

Electrical Data

Table of power input, starting current, and main power connection details.

Pump Down and Refrigerant Charge Check

Unit Maintenance and Troubleshooting

Installation Supplement (38YYS...G)

Operating Range

Refer to Table III for the unit's operational environmental limits.

Features: HPC and LRPS

Details on Head Pressure Controller and Loss of Refrigerant Pressure Switch.

Condensing Temperature Controller

Controller Operation and Settings

Explanation of the controller's function and temperature settings.

Troubleshooting

Specific troubleshooting advice for the condensing temperature controller.

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