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Carrier 40SMC036N - User Manual

Carrier 40SMC036N
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INSTALLATION MANUAL

Table of Contents

Questions and Answers

  • B
    bkingAug 13, 2025
    What to do if my Carrier 40SMC036N compressor and fan of the outdoor unit will not start?
    • D
      Danielle LopezAug 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
    Michael CruzAug 17, 2025
    Why does my Carrier 40SMC036N compressor run continuously?
    • M
      Melissa StantonAug 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.
  • J
    john93Aug 21, 2025
    What to do if my Carrier 40SMC036N discharge pressure is too high?
    • S
      Sara DelacruzAug 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.
  • S
    Sarah RodriguezAug 25, 2025
    What to do if my Carrier Air Conditioner compressor will not start, but outdoor fan is running?
    • R
      Rebecca WilliamsAug 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.
  • C
    Connor OwensAug 28, 2025
    What to do if my Carrier 40SMC036N has frequent ice build-up on outdoor coil during heating?
    • E
      Elizabeth SmithAug 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.
  • W
    Wanda NortonSep 1, 2025
    What to do if my Carrier 40SMC036N compressor starts, but stops due to its overtemperature protection?
    • C
      Charles SullivanSep 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.
  • L
    Lisa RiceSep 5, 2025
    What to do if my Carrier Air Conditioner discharge pressure is too low?
    • C
      Chelsea KramerSep 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.
  • T
    Tamara CollinsSep 8, 2025
    What causes outdoor fan cycling due to its overtemperature protection in Carrier 40SMC036N Air Conditioner?
    • M
      Melissa MoralesSep 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.

Summary

Dimensions and Weight

Connections

Minimum Clearances

Operating Limits

General Information

Unit Installation

Step-by-step guide for installing the outdoor unit of a split system.

Choosing the Installation Site

Guidelines and recommendations for selecting an optimal location for the outdoor unit.

Warnings: Avoid

Refrigerant Connections

Flaring the Ends of the Tubing

Procedure for flaring copper tubes for refrigerant connections.

Connection to Unit

How to connect refrigerant lines to the unit, including torque specs.

Air Purging

Method for purging air from the piping using a vacuum pump.

Electrical Connections

Electrical Connections for 018 to 024 Size

Wiring diagrams for electrical connections for specific model sizes.

Electrical Connections for 028 to 048 Size

Wiring diagrams for electrical connections for larger model sizes.

Electrical Data

Pump Down and Check the Refrigerant Charge

Pump-Down Operation

Operation to collect all system refrigerant in the outdoor unit before disconnection.

Refrigerant Charge Check

Procedure for verifying or adding refrigerant charge after leaks or replacements.

Unit Maintenance

Cleaning the Coil

Instructions for cleaning the outdoor unit's coil.

Troubleshooting

Installation Instructions Supplement

Heat Pump Unit Features

Details on specific features for heat pump units like HPC and LRPS.

Condensing Temperature Controller Operation

Explanation of how the condensing temperature controller functions.

Temperature Setting

Details regarding the temperature setting for the controller.

Carrier 40SMC036N Specifications

General IconGeneral
BrandCarrier
Model40SMC036N
CategoryAir Conditioner
LanguageEnglish

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