Carrier 45MBAAQ Owner's Manual
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Carrier 45MBAAQ Owner's Manual

Split-type air handler indoor unit ductless system sizes 18k-60k
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45MBAAQ
Split-Type Air Handler Indoor Unit Ductless System
Sizes 18K - 60K
Please read this Owner's Information Manual carefully before installing and using this appliance and keep this manual for future
reference.
For your convenience, please record the model and serial numbers of your new equipment in the spaces provided. This information, along
with the installation data and dealer contact information, will be helpful should your system require maintenance or service.
UNIT INFORMATION
Model # _______________________________
Serial # ________________________________
INSTALLATION INFORMATION
Date Installed ___________________________
Owner's Manual
A NOTE ABOUT SAFETY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
CONTROLS OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
WIRELESS REMOTE CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . 11
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
OPERATION INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
CARE AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
NOTE TO EQUIPMENT OWNER:
DEALERSHIP CONTACT INFORMATION
Company Name: ______________________
Address:_____________________________
Phone Number:________________________
Technician Name:______________________
Specifications subject to change without notice.

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  • Page 1: Table Of Contents

    45MBAAQ Split-Type Air Handler Indoor Unit Ductless System Sizes 18K - 60K Owner’s Manual TABLE OF CONTENTS PAGE A NOTE ABOUT SAFETY....... . 2 GENERAL .

  • Page 2: A Note About Safety

    45MBAAQ: Owner’s Manual A NOTE ABOUT SAFETY WARNING This is the safety-alert symbol Anytime you see this symbol in manuals, instructions, and on the unit, be WARNING FOR USING FLAMMABLE REFRIGERANTS aware of the potential for personal injury. There are three levels of...
  • Page 3 45MBAAQ: Owner’s Manual This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
  • Page 4 45MBAAQ: Owner’s Manual Table 2 — Compatibility Table MULTIZONE HEAT PUMP OUTDOOR UNIT 37MGRAQ30EA3 37MGRAQ18CA3 37MGRAQ24DA3 37MGRAQ48FA3 37MGRAQ55FA3 37MGRAQ36EA3 37MGHAQ30EA3 INDOOR UNIT 37MGHAQ18CA3 37MGHAQ24DA3 37MGHAQ48FA3 37MGHAQ55FA3 37MGHAQ36EA3 45MBAAQ18XB3 ● ● ● ● ● ● ● 45MBAAQ24XB3 ● ● ● ●...
  • Page 5 45MBAAQ: Owner’s Manual 1. Installation (where refrigerant pipes are allowed) entire system shall be pressure tested to the low side design pressure. - Any person who is involved with working on or breaking into a b. The test pressure after removal of pressure source shall be...
  • Page 6 45MBAAQ: Owner’s Manual 6. No ignition sources 13. Detection of flammable refrigerants No person carrying out work in relation to a REFRIGERATING Under no circumstances shall potential sources of ignition be used SYSTEM which involves exposing any pipe work shall use any in the searching for or detection of refrigerant leaks.
  • Page 7 45MBAAQ: Owner’s Manual 15. Charging procedures 18. Recovery In addition to conventional charging procedures, the following When removing refrigerant from a system, either for servicing or requirements shall be followed: decommissioning, it is recommended good practice that all refrigerants are removed safely.

  • Page 8: Accessories

    45MBAAQ: Owner’s Manual Table 4 — Explanation of symbols displayed on the indoor unit or outdoor unit This symbol shows that the appliance used a flammable refrigerant. If refrigerant WARNING leaks and is exposed to an external ignition source, there is a risk of fire.

  • Page 9: Indoor Unit Parts And Major Functions

    45MBAAQ: Owner’s Manual INDOOR UNIT PARTS AND MAJOR FUNCTIONS Air outlet Air inlet Fig. 1 —Unit Parts OPERATING CONDITIONS Use the system under the following temperatures for safe and effective operation. If the air conditioner is used under different conditions, it may malfunction or become less efficient.

  • Page 10: Controls Options

    45MBAAQ: Owner’s Manual CONTROLS OPTIONS FEATURES Under normal working conditions, the switch, wind speed and temperature can not be adjusted by remote control. Requirements of wire controller: Control AXU function for live heating. ENERGY SAVING TIPS • DO NOT set the unit to excessive temperature levels.

  • Page 11: Wireless Remote Control

    45MBAAQ: Owner’s Manual WIRELESS REMOTE CONTROL Before you begin using your new unit, familiarize yourself with the remote control. See page 12 through page 16 for more information on these controls ON/OFF MODE Turns the unit on or off. Scroll through operation modes...
  • Page 12 45MBAAQ: Owner’s Manual Wireless Remote Control LCD Screen Indicators Information appears when the remote controller is powered up. Active clean feature display Not applicable for this unit Fresh feature display Breeze Away display Sleep mode display Not applicable for this unit...
  • Page 13 45MBAAQ: Owner’s Manual REMOTE CONTROL Remote Control Operation - Quick Start All features may not be available. This remote is NOTE: NOTE: When transmitting a command from the remote control to shared across other indoor units. the unit, be sure to point the control toward the right side of the unit.
  • Page 14 45MBAAQ: Owner’s Manual BASIC REMOTE CONTROL OPERATION AUTO Mode Before operation, ensure the unit is plugged in and power is available. In AUTO mode, the unit automatically selects the COOL, FAN, or HEAT operation based on the set temperature. COOL Mode...
  • Page 15 45MBAAQ: Owner’s Manual FAN Mode Setting the Room Temperature Set Point Press TEMP or TEMP to raise or lower the temperature. The unit confirms the signal receipt with a beep and the value of the set temperature appears on the display and changes accordingly. The temperature can be set between 62°F (17°C) and 86°F (30°C) in...
  • Page 16 45MBAAQ: Owner’s Manual UNIT OFF CLEAN Mode Press CLEAN to activate or deactivate the self-cleaning function. Under 1. Set TIMER ON as previously described. this function, the air conditioner automatically cleans and dries the 2. Set TIMER OFF as previously described. The unit starts evaporator.

  • Page 17: Wiring Diagram

    45MBAAQ: Owner’s Manual WIRING DIAGRAM Fig. 15 —Wiring Diagram 18K to 24K Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
  • Page 18 45MBAAQ: Owner’s Manual WIRING DIAGRAM (CONT.) Fig. 16 —Wiring Diagram 30K to 36K(XB3) Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
  • Page 19 45MBAAQ: Owner’s Manual WIRING DIAGRAM (CONT.) Fig. 17 —Wiring Diagram 36K(XA3)/48K/60K This symbol indicates the element is optional Remove the short connector of JR1 when using the “ON-OFF” function. Remove the short connector of J7 when using the “WATER LEVEL SWITCH” function.

  • Page 20: Operation Instructions

    45MBAAQ: Owner’s Manual OPERATION INSTRUCTIONS DISPLAY PANEL The Display Panel is shipped inside the Control Box and it is used as an NOTES: infrared receiver for the wireless remote controller shipped with the unit • Different models have different front panel and display window.

  • Page 21: Care And Maintenance

    45MBAAQ: Owner’s Manual CARE AND MAINTENANCE Cool mode(+1 C/2 F) per hour CLEANING THE INDOOR UNIT CAUTION Keep temperature running Heat mode( -1 C/2 F) per hour BEFORE CLEANING OR MAINTENANCE Always TURN OFF your AC system and disconnect its power supply before cleaning or maintenance.
  • Page 22 45MBAAQ: Owner’s Manual Cleaning Your Indoor Unit (Air Filter) Maintaining the Unit Maintenance –Long Periods of Non-Use CAUTION If you plan not to use your unit for an extended period of time, perform the following steps: Before changing the filter or cleaning, turn off the unit and disconnect its power supply.

  • Page 23: Troubleshooting

    45MBAAQ: Owner’s Manual TROUBLESHOOTING CAUTION If any of the following conditions occurs, turn off your unit immediately. • The field wiring cable is damaged or abnormally warm • You smell a burning odor • The unit emits loud or abnormal sounds •...
  • Page 24 45MBAAQ: Owner’s Manual Table 8 — Other Issues When troubles occur, check the following points before contacting a repair company. Problem Possible Causes Solution Temperature setting may be higher than ambient room temperature Lower the temperature setting The heat exchanger on the indoor or outdoor unit is dirty...
  • Page 25 45MBAAQ: Owner’s Manual Table 9 — Error Codes Display Malfunction and Protection Indication Display Malfunction and Protection Indication Other indoor unit refrigerant sensor detects a leak (multi-zone) ODL Current Protection ECC1 PC08 EC07 Outdoor DC fan motor speed out of control...
  • Page 26 45MBAAQ: Owner’s Manual © 2024 Carrier. All rights reserved. Edition Date: 09/24 Catalog No: 45MBAAQ-01OM A Carrier Company Replaces: New Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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