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Marvair MAA1018A-MAA1060A - User Manual

Marvair MAA1018A-MAA1060A
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MODELS:
MAA1018A-MAA1060A, MGA1072A
(Single Stage)
MAA2060A-MGA2072A
(2-Stage)
Installation & Operation Manual
11 EER Vertical Wall-Mount Air Conditioners
Manufactured By:
A Division of the AIRXCEL
®
Commercial Group
P.O. Box 400 • Cordele, Georgia 31010 • 156 Seedling Drive • Cordele, Georgia 31015
(229) 273-3636 • Fax (229) 273-5154
E-mail: marvairsales@airxcel.com • Internet: www.Marvair.com
The most current version of this manual can be found at www.Marvair.com.
IMPORTANT
This manual may include information for options and features which may not be
included on the unit being installed. Refer to the unit data label or Model Identication
to determine which features and options this unit is equipped with.
INSTALLER: Afx the instructions on the inside of the building adjacent to the thermostat.
END USER: Retain this manual for future reference.
Marvair MAA/MGA Wall Mount AC Installation & Operation Manual
02/2021 Rev.13
Air Conditioner Product Manual
Vertical Wall-Mount Air Conditioners
with Front Control Box Panel

Table of Contents

Questions and Answers

  • J
    Jessica LeeAug 4, 2025
    Why my Marvair Air Conditioner unit does not run?
    • C
      Carla JensenAug 4, 2025
      If your Marvair Air Conditioner unit isn't running, it could be due to a power supply issue. Check the power supply to ensure it has the correct phase and voltage. Inspect the wiring to the unit and check any external breakers or fuses. Also, the internal disconnect might have tripped, so check the internal circuit protection devices for continuity. An external thermostat could be causing the issue, so verify its operation. The unit might be off due to a high or low pressure limit; if so, reset the pressure switch. Finally, there could be an internal component failure or loose wiring, so check for these issues.
  • B
    brownmitchellAug 9, 2025
    What to do if Marvair Air Conditioner runs continuously but cooling is insufficient?
    • M
      madeline34Aug 9, 2025
      If your Marvair Air Conditioner runs for extended periods but doesn't cool sufficiently, start by checking the air filter(s) for dirt and ensure proper blower operation. Remove any airflow restrictions. The unit might have low refrigerant, so check for proper charge and potential leaks. A component failure, especially the compressor, could also be the cause, so inspect internal components. Finally, the unit might be undersized for the job, in which case you may need to add additional units for greater capacity.
  • H
    hoffmankarenAug 14, 2025
    Why does my Marvair MAA1018A-MAA1060A cycle on high/low pressure limit?
    • B
      Brian OdomAug 14, 2025
      If your Marvair Air Conditioner is cycling on high or low pressure limits, it could be due to a loss or restriction of airflow. Check the blower assembly for proper operation and look for airflow restrictions, such as a dirty air filter. Inspect the blower motor and condenser fan. Another cause could be a restriction in the refrigerant circuit, so check for blockages, especially in the filter drier and capillary tube assembly. If the unit was recently serviced, refrigerant overcharge could be the problem; in this case, evacuate and recharge to factory specifications. Lastly, a defective pressure control could be the issue; check the limit cutout pressures, noting that the control should actuate at approximately 60 PSIG (low pressure) and 650 PSIG (high pressure).
  • L
    Lindsey WhitakerAug 19, 2025
    What to do if my Marvair MAA1018A-MAA1060A blows fuses or trips circuit breaker?
    • P
      Patrick BrownAug 19, 2025
      If your Marvair Air Conditioner blows fuses or trips the circuit breaker, it may be due to inadequate circuit ampacity. Check the electrical requirements and correct as necessary. A short, loose, or improper connection in the field wiring could also be the cause, so inspect the field wiring for errors. An internal short circuit or loose connection within the unit could be the problem; check the wiring inside the unit, referring to the wiring and schematic diagrams, and test components, especially the compressor, for shorts. Excessively high or low supply voltage or phase loss (3ø only) could also cause this issue; note the voltage range limitations specific to the compressor troubleshooting section.
  • A
    Angelica BuckAug 23, 2025
    Why is there water on floor near my Marvair MAA1018A-MAA1060A?
    • R
      Russell BurkeAug 23, 2025
      If you find water on the floor near your Marvair Air Conditioner, it could be due to an obstruction in the condensate line. Check for any clogs or restrictions. Alternatively, there might be an obstruction or leak in the condensate pan, so inspect the pan for leaks or blockages. Finally, ensure the unit is level, as being unlevel can also cause water leakage.
  • K
    Kyle BryantAug 29, 2025
    How to troubleshoot no space heating or reduced heating in Marvair Air Conditioner?
    • M
      Mark RobertsAug 29, 2025
      If your Marvair Air Conditioner (equipped with resistance elements) provides no or reduced space heating, it could be due to defective heating element(s). Check the resistance element(s) for continuity. A thermal limit might be open, so check continuity across the thermal limit switch. A defective heater contactor could also be the cause, so check the relay for proper operation and replace it if defective.

Summary

How To Use This Manual

Important Safety Precautions

Essential safety guidelines and warnings before performing any work.

Chapter 1 Description & Specifications

General Description

Overview of Marvair Wall Mount AC series, capacities, and features.

Model Identification

Explanation of the model identification number and its components.

General Operation

Details on how the air conditioners function in cooling and heating modes.

Optional Controls and Packages

Information on optional features like Hard Start Kit, Extreme Duty, and coatings.

Economizer Components

Explanation of economizer parts, sensors, and control settings for free cooling.

Chapter 2 Electronic Control Board

Introduction

Overview of the Marvair PCB, its features, and benefits for performance.

Operation

Explains LED status indicators and the control board's functional modes.

Sequence of Operation

Describes the system's operational logic for cooling, heating, and dehumidification.

Chapter 3 Installation

Equipment Inspection

Guidelines for inspecting the unit for shipping damage and completeness upon receipt.

Installation Requirements

Key considerations for site selection, including noise, drainage, and airflow.

Electrical Connections

Instructions for making proper electrical connections, including voltage and phasing.

Chapter 4 Start-Up

Check-Out of Cooling Cycle

Procedure for verifying the proper operation of the cooling cycle.

Check-Out of Heating Cycle

Procedure for verifying the proper operation of the heating cycle.

Chapter 5 Troubleshooting

Failure Symptoms Guide

A guide to common problems, likely causes, and suggested corrections.

Compressor Troubleshooting

Specific diagnostic tests and procedures for compressor issues.

Control Board Diagnosis

How to diagnose issues using the control board's diagnostic LED and fault codes.

Chapter 6 Maintenance

Scheduled Maintenance

Recommendations for routine service and cleaning of unit components.

Chapter 7 Warranty

Marvair, Inc. Limited Product Warranty

Details on product warranty coverage, exclusions, and owner responsibilities.

Chapter 8 Start-Up Checklist

Start-Up & Commissioning Form

A checklist to ensure all pre-start-up and operational checks are completed.

Marvair MAA1018A-MAA1060A Specifications

General IconGeneral
BrandMarvair
ModelMAA1018A-MAA1060A
CategoryAir Conditioner
LanguageEnglish

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