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Carrier Performance 40MBDQ24---3 - User Manual

Carrier Performance 40MBDQ24---3
30 pages
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Specifications subject to change without notice.
Fig. 1 — Sizes 09K - 48K
NOTE:
The 09K-48K unit can be mounted vertically as well as
horizontally.
Fig. 2 — Size 58K
NOTES: Read the entire instruction manual before starting the
installation.
Images are for illustration purposes only. Actual models may
differ slightly.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS.....................................................................2
INTRODUCTION.........................................................................................3
INSTALLATION REQUIREMENTS.............................................................4
DIMENSIONS..............................................................................................5
INSTALLATION CLEARANCES HORIZONTAL INSTALLATIONS ............7
MAINTENANCE CLEARANCES.................................................................7
INSTALLATION...........................................................................................8
Step 1 - Check Equipment ..........................................................................8
Step 2 - Mount Unit .....................................................................................8
Step 3 - Installing Ductwork.........................................................................10
Step 4 - Condensate Drain Installation........................................................11
Step 5 - Electrical Connections ...................................................................14
WIRING.......................................................................................................15
ELECTRICAL DATA....................................................................................16
CONNECTION DIAGRAMS ........................................................................16
Step 6 - Refrigerant Piping ..........................................................................17
WIRELESS REMOTE CONTROLLER INSTALLATION .............................18
WIRED REMOTE CONTROLLER INSTALLATION....................................18
STARTUP .................................................................................................18
Step 7 - Setting Static Pressure or Automatic Airflow .................................19
FAN PERFORMANCES AT VARYING STATIC PRESSURES ..................20
SYSTEM CHECKS......................................................................................28
TROUBLESHOOTING ................................................................................29
ADVANCED SERVICE AND INSTALLATION FUNCTIONS ......................30
Installation Instructions
40MBDQ Ducted Slim Ductless System
Sizes 09 to 58

Questions and Answers

  • N
    Natalie SimmonsAug 14, 2025
    What to do if my Carrier Performance 40MBDQ24---3 showing overload protection?
    • T
      Todd TapiaAug 14, 2025
      If your Carrier Air Conditioner is showing an overload protection error, check the system load and reset the protection.
  • K
    Kenneth BeckAug 17, 2025
    What to do if my Carrier Air Conditioner showing over voltage or over low voltage protection?
    • E
      Elaine WilkinsonAug 17, 2025
      If your Carrier Air Conditioner shows an over voltage or over low voltage protection error, verify the voltage levels and circuit integrity.
  • S
    sbellAug 21, 2025
    What to do if my Carrier Performance 40MBDQ24---3 Air Conditioner has high temperature protection of compressor top diagnosis?
    • J
      James SandersAug 21, 2025
      If your Carrier Air Conditioner activates high temperature protection for the compressor (9K, 12K models only), allow the compressor to cool down.
  • D
    David WilsonAug 26, 2025
    What to do if my Carrier Performance 40MBDQ24---3 Air Conditioner's indoor room temperature sensor T1 is open or short circuit?
    • T
      Taylor DeanAug 26, 2025
      If your Carrier Air Conditioner indicates that the indoor room temperature sensor T1 is open circuit or short circuit, check the T1 temperature sensor connection and consider replacement.
  • E
    Eric BrewerAug 28, 2025
    What to do if my Carrier Air Conditioner's evaporator coil temperature sensor T2 is open or short circuit?
    • N
      norrisjaredAug 28, 2025
      If your Carrier Air Conditioner indicates that the evaporator coil temperature sensor T2 is open circuit or short circuit, check the T2 temperature sensor connection and consider replacement.
  • A
    Angela GonzalezSep 1, 2025
    What to do if my Carrier Performance 40MBDQ24---3's condenser coil temperature sensor T3 is open or short circuit?
    • C
      Cameron HardinSep 1, 2025
      If your Carrier Air Conditioner indicates that the condenser coil temperature sensor T3 is open circuit or short circuit, check the T3 temperature sensor connection and consider replacement.
  • N
    Nichole JonesSep 5, 2025
    What to do if my Carrier Air Conditioner's outdoor ambient temperature sensor T4 is open or short circuit?
    • K
      Kayla GarrettSep 5, 2025
      If your Carrier Air Conditioner indicates that the outdoor ambient temperature sensor T4 is open circuit or short circuit, check the T4 temperature sensor connection and consider replacement.
  • J
    joneslisaSep 9, 2025
    What to do if my Carrier Performance 40MBDQ24---3 Air Conditioner's compressor discharge temperature sensor T5 is open or short circuit?
    • M
      Mrs. Elizabeth ContrerasSep 9, 2025
      If your Carrier Air Conditioner indicates that the compressor discharge temperature sensor T5 is open circuit or short circuit, check the T5 temperature sensor connection and consider replacement.

Summary

SAFETY CONSIDERATIONS

Electrical Operation Hazard Warnings

Warnings related to electrical shock during installation and servicing.

Explosion Hazard Warning

Warning about using oxygen for leak testing or compressor operation.

Equipment Damage Cautions

Cautions regarding refrigerant pipe burial and equipment damage.

Cut Hazard Caution

Caution regarding sharp edges on sheet metal parts.

INSTALLATION REQUIREMENTS

Product Installation Warnings and Cautions

Critical warnings and cautions for safe and proper product installation.

INSTALLATION CLEARANCES

INSTALLATION PROCEDURES

HANGER BOLT INSTALLATION

DUCTWORK AND AIRFLOW ARRANGEMENTS

CONDENSATE DRAIN INSTALLATION

CONDENSATE LIFT PUMP INSTALLATION

ELECTRICAL CONNECTIONS

Electrical Safety and Connection Procedures

Essential safety precautions and step-by-step guide for making electrical connections.

WIRING GUIDELINES

REFRIGERANT PIPING INSTALLATION

REMOTE CONTROLLER INSTALLATION AND START-UP

STATIC PRESSURE AND AIRFLOW SETTINGS

TROUBLESHOOTING

Carrier Performance 40MBDQ24---3 Specifications

General IconGeneral
BrandCarrier
ModelPerformance 40MBDQ24---3
CategoryAir Conditioner
LanguageEnglish

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