Marvair AVPA 12 series User Manual

Marvair AVPA 12 series

44 pages

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MODELS:

AVPA 12-20-24-30-36-42-48-60-72

HVESA 36-42-49-60

HVEA 24-30-36-42-49-60

AVHA 12-20-24-30-36-42-48-60

Installation & Operation Manual

9-11 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 ComPac Installation & Operation Manual 12/2017 Rev.16

Part #01655

Air Conditioner Product Manual

Vertical Wall-Mount Air Conditioners

with Front Control Box Panel

Table of Contents

Questions and Answers:

S
Stephanie CarrAug 2, 2025
What to do if my Marvair AVPA 12 Air Conditioner unit does not run?
- H
  Heather PetersenAug 2, 2025
  If your Marvair Air Conditioner unit isn't running, start by checking the power supply to ensure it has adequate phase and voltage. Inspect the wiring to the unit and any external breakers or fuses. Also, check the internal circuit protection devices for continuity. Verify the operation of the wall-mounted thermostat and reset the pressure switch if the unit is off on a high or low pressure limit. Finally, check for loose wiring and component failures.
D
derek22Aug 6, 2025
Why does my Marvair AVPA 12 run continuously but cooling is insufficient?
- F
  freemankeithAug 6, 2025
  Your Marvair Air Conditioner might run for long periods with insufficient cooling due to several reasons. First, check the air filters for dirt and ensure proper blower operation, removing any airflow restrictions. A low refrigerant charge could also be the cause, so check for proper charge and potential leaks. Inspect internal components, especially the compressor, for proper operation. Finally, consider whether the unit is undersized for the job, and if so, consider adding additional units for greater capacity.
C
claycrystalAug 12, 2025
What to do if my Marvair Air Conditioner blows fuses or trips the circuit breaker?
- H
  Heidi SweeneyAug 12, 2025
  If your Marvair Air Conditioner is blowing fuses or tripping the circuit breaker, it could be due to several reasons. Check the electrical requirements and correct as necessary. Inspect the field wiring for any shorts, loose connections, or improper connections. Also, check the unit's internal wiring, referring to the wiring and schematic diagrams, and test components, especially the compressor, for shorts. Finally, check if there is excessively high or low supply voltage or phase loss.
A
Alexander GomezAug 17, 2025
How to troubleshoot a Marvair AVPA 12 that cycles on high/low pressure limit?
- M
  Monica DavisAug 17, 2025
  To troubleshoot a Marvair Air Conditioner cycling on high/low pressure limit, begin by checking the blower assembly for proper operation and look for airflow restrictions, such as a dirty air filter. Inspect the blower motor and condenser fan. Also, check for blockages or restrictions in the refrigerant circuit, especially the filter drier and capillary tube assembly. If the unit was recently serviced, refrigerant overcharge could be the problem, and you should evacuate and recharge to factory specifications. Finally, check the limit cutout pressures of the pressure control; it should actuate at approximately 35 PSIG (low pressure) and 400 PSIG (high pressure).
M
Maria HurstAug 21, 2025
Why is there water on the floor near my Marvair AVPA 12?
- M
  michael64Aug 21, 2025
  If you find water on the floor near your Marvair Air Conditioner, it could be due to an obstruction in the condensate line, so 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. Lastly, ensure that the unit is level.
A
Andrew MartinAug 27, 2025
What causes no space heating or reduced heating in a Marvair Air Conditioner?
- B
  bentonchadAug 27, 2025
  If your Marvair Air Conditioner (equipped with resistance elements) has no space heating or reduced heating, it could be due to defective heating elements; check the resistance elements for continuity. Also, check the continuity across the thermal limit switch, as the thermal limit may be open. Lastly, a defective heater contactor could be the cause; check the relay for proper operation and replace it if defective.

Marvair AVPA 12 series Specifications

General

Brand	Marvair
Model	AVPA 12 series
Category	Air Conditioner
Language	English

Summary

Important Safety Precautions

Chapter 1 ComPac Description & Specifications

1.6 Electronic Control Board Mode of Operation

Details on the functions, modes, and indicators of the ComPac electronic control board.

Chapter 5 Maintenance

5.1 Scheduled Maintenance

Chapter 6 Warranty

Chapter 2 Installation

2.2 Installation Requirements

General requirements and considerations for installing Marvair ComPac air conditioners.

2.7 Mounting The Unit

2.9 Electrical Connections

Procedures for making high-voltage and low-voltage electrical connections for ComPac units.

Chapter 3 Start-Up

3.1 Check-Out of Cooling Cycle

Steps to verify the proper operation of the cooling cycle on ComPac units.

3.2 Check-Out of Heating Cycle

Steps to verify the proper operation of the heating cycle on ComPac units.

Chapter 4 Troubleshooting

4.2 Failure Symptoms Guide

A guide to diagnosing common ComPac unit problems based on observed symptoms.

4.3 Compressor Troubleshooting

Specific electrical tests and procedures for diagnosing compressor issues in ComPac units.

4.4 Control Board Diagnosis

Methods for diagnosing issues related to the ComPac unit's electronic control board.

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