Daikin Maverick I MPS A04C User Manual

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Installation and Maintenance Manual IM 970-2

Group: Applied Air Handling

Part Number: 920102421-20

Date: May 2017

Maverick

®

I

Heating & Cooling

Models MPSA03 – A05, 14 SEER

Models MPSH03 – H05, 15 SEER

3 to 5 Tons

R-410A Refrigerant

Table of Contents

Questions and Answers:

S
Stephanie HallAug 8, 2025
Why is my Daikin Maverick I MPS A04C unit not running?
- M
  Matthew TaylorAug 8, 2025
  Your Daikin Air Conditioner might not be running due to several reasons: * The power could be off, or there might be a loose electrical connection. Check for the correct voltage at the compressor contactor in the control box. * The thermostat might be out of calibration or set too high. Try resetting it. * A contactor could have failed. Check for 24 volts at the contactor coil; replace it if the contacts are open. * Blown fuses or a defective transformer could be the issue. Replace the fuses. * The high-pressure control might be open (if provided). Check the wiring, replace the transformer, and reset. Note that the high-pressure control opens at 450 PSIG. * The low voltage wiring may be damaged. Replace the thermostat wiring.
C
Craig PhamAug 18, 2025
What to do if my Daikin Maverick I MPS A04C Air Conditioner has insufficient cooling?
- N
  Nichole CookAug 18, 2025
  If your Daikin Air Conditioner isn't cooling enough, consider these potential causes: * The unit may be improperly sized. Recalculate the load. * There might be improper airflow. Check that it's approximately 400 CFM per ton. * The refrigerant charge could be incorrect. Charge it according to the procedure attached to the unit's service panel. * There may be air, non-condensables, or moisture in the system. Recover the refrigerant, evacuate, and recharge, adding a filter drier. * The voltage might be incorrect. Ensure the voltage at the compressor terminals is within 10% of the rating plate volts when the unit is operating.
R
Ruth BarryAug 28, 2025
What to do if the condenser fan runs, but the compressor doesn’t, in my Daikin Air Conditioner?
- A
  Ashley WoodsAug 28, 2025
  If the condenser fan in your Daikin Air Conditioner is running but the compressor isn’t, here are a few things to check: * There might be a loose connection. Check for the correct voltage at the compressor and tighten all connections. * The compressor could be stuck, grounded, have an open motor winding, or an open internal overload. Wait at least 2 hours for the overload to reset. If it's still open, replace the compressor. * There could be a low voltage condition. At the compressor terminals, the voltage must be within 10% of the rating plate volts when the unit is operating. You can also add start kit components.

Daikin Maverick I MPS A04C Specifications

General

Brand	Daikin
Model	Maverick I MPS A04C
Category	Air Conditioner
Language	English

Summary

Installation and Maintenance Manual

Maverick I Product Series

Identifies the specific product line covered by the manual.

Introduction

Hazardous Information Messages

Lists critical safety warnings and precautions for installation and operation.

Mechanical Installation

Gas Supply, Condensate Drain and Piping

Instructions for connecting gas supply, condensate drain, and piping.

LP Conversion

Adjusting Furnace Input

Procedures for setting and verifying furnace input gas pressure and rate.

Electrical Installation

Power Supply

Safety precautions and wiring guidelines for connecting the unit's power supply.

Wiring Diagrams

MPS A03C-A04C Wiring Diagrams

MPS A05C Wiring Diagrams

Physical Data

Unit Capacity and Physical Data

Detailed specifications on unit capacity, dimensions, and component data.

Performance Data

System Performance - Standard Efficiency

Gross system performance data for standard efficiency units.

System Performance - High Efficiency

Gross system performance data for high-efficiency units.

Airflow Performance

Airflow performance data for units across voltages and speeds.

Controls and Operation

Furnace Section Controls and Ignition System

Explains the normal furnace operating sequence and diagnostic indications.

Operating Instructions

Manual Reset Overtemperature Control

Dehumidification Control

Maintenance

Unit Maintenance Procedures

Cooling Section Maintenance

System Charge Charts

Blower Motor Speed Taps

Troubleshooting

Cooling Troubleshooting Chart

Details common cooling issues, causes, and remedies.

Furnace Troubleshooting Guide

A flowchart to diagnose and resolve furnace operation issues.

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