Daikin McQuay IM 934-5 User Manual

Daikin McQuay IM 934-5

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Note: Installationandmaintenancearetobeperformedonlybyqualiedpersonnelwhoarefamiliarwithlocalcodesand

regulationsandareexperiencedwiththistypeofequipment.Caution:Sharpedgesandcoilsurfacesarepotentialinjury

hazards.

Installation & Maintenance Data IM 934-5

Group: PTAC

Part Number: 910146417

Date: August 2013

Applied Packaged Terminal Air Conditioner

Model PDAA Dual Motor Angled Top Unit - 16" x 42" with R-410A Refrigerant

©2013 McQuay International • 1-800-432-1342 • www.daikinmcquay.com IM 934-5 (8-13)

Table of Contents

Questions and Answers:

S
Samantha FletcherAug 20, 2025
Why won't my Daikin Air Conditioner blower operate on heat?
- C
  Clayton DavilaAug 20, 2025
  If the blower in your Daikin air conditioner won't operate on heat, consider the following: * Check the power supply line fuse and circuit breakers to ensure there is power to the unit. * Open the heat valve or turn on the heating system. * Replace the faulty touchpad/thermostat. * Tighten loose connections at the touchpad/thermostat. * Adjust components. * Rotate the control knob to “warmer” if the thermostat is set too low.
G
Gregory PerezAug 23, 2025
What to do if my Daikin Air Conditioner is 'sweating'?
- M
  michaelalvaradoAug 23, 2025
  If your Daikin air conditioner is “sweating,” it could be due to: * A condensate drain from the evaporator to the condenser being plugged. Remove any obstructions to water flow. * Damaged insulating seals on the equipment. Adjust or replace them. * The evaporator blower motor not being up to speed. Check for correct voltage and replace the motor if necessary. * The evaporator blower being incorrectly positioned. Tighten it.
B
brianmendezAug 25, 2025
What to do if my Daikin McQuay IM 934-5 Air Conditioner compressor starts and runs, but compressor occasionally stops?
- S
  silvaianAug 26, 2025
  If the compressor starts and runs on cool but occasionally stops (on overload device), it may be due to: * Low voltage due to overload circuits within the building or throughout the local power system. Run a separate electric line to the equipment and consult the local power company. * High voltage due to fluctuations in the local power system. Consult the local power company. * A partial short circuit in the compressor motor. If confirmed, ship the cooling chassis prepaid to the nearest McQuay authorized warranty station.
J
Jason SmithAug 27, 2025
What to do if my Daikin McQuay IM 934-5 is cooling too much?
- D
  Donna ChristensenAug 27, 2025
  If your Daikin air conditioner is cooling too much: * Adjust the thermostat if it is set too low. * Replace the thermostat if it is defective.
J
Jackie SilvaAug 30, 2025
What to do if my Daikin McQuay IM 934-5 blower won’t operate on cool?
- E
  Erin GreeneAug 30, 2025
  If the blower in your Daikin air conditioner isn't working when set to cool, here are some things to check: * Make sure the unit has power by checking the supply line fuses and circuit breakers. Ensure the power is on. If fuses are blown, this indicates a circuit overload, short circuit, or a ground condition. Voltage supply should be within 10% of the voltage on the date plate. * Consider replacing a faulty touchpad/thermostat. * Ensure that the connections at the push-button switch are tightened.
J
John HudsonSep 3, 2025
What to do if my Daikin McQuay IM 934-5 compressor starts and runs but blowers do not run?
- K
  Kayla ThompsonSep 3, 2025
  If your Daikin air conditioner's compressor starts but the blowers don't, consider the following: * Replace the faulty touchpad/thermostat. * Replace the open circuited blower motor. * Adjust the blower motor or blower wheel position if the blower is rubbing against its housing. * Replace the motor if the bearings on the blower motor are seized. * Tighten the loose connection at the touchpad/thermostat.
M
Melissa ParksSep 6, 2025
What to do if my Daikin McQuay IM 934-5 compressor runs but stops after a short time?
- I
  irandolphSep 6, 2025
  If the compressor of your Daikin air conditioner starts and runs but stops after a short interval, it may be due to the operation of the overload device because of overloading the compressor motor. To resolve this: * Check the voltage supply. * Clean the condenser inside and out. * Check the outside face of the condenser for recirculation of condenser air. Install air “splitters” if they are missing. * Check the compressor for a short circuit. If it's defective, ship the cooling chassis to the nearest McQuay authorized warranty station.
W
William AguilarSep 8, 2025
How to fix a Daikin McQuay IM 934-5 Air Conditioner that gives an electrical shock?
- B
  Brent PopeSep 8, 2025
  If your Daikin Air Conditioner is giving an electrical shock, it indicates a grounded electrical circuit. You need to eliminate the ground.
V
Vanessa ThompsonSep 10, 2025
What to do if my Daikin McQuay IM 934-5 Air Conditioner compressor starts and runs, but the fan motor starts then stops?
- C
  Christopher SmithSep 12, 2025
  If the compressor starts and runs, but the fan motor starts and then stops, it could be due to: * Operation of the internally connected overload device due to a short circuit in the blower motor. Replace the motor. * Windings, rubbing of blower wheel, or lack of lubrication in blower motor bearings. Adjust the blower wheel or motor, or replace them.
J
James FordSep 13, 2025
Why is my Daikin McQuay IM 934-5 not providing enough heat?
- E
  Elizabeth ThomasSep 13, 2025
  If your Daikin air conditioner is providing insufficient or no heat, it could be due to: * No steam or hot water being applied. Contact building management. * No power. Check the power supply line fuse and circuit breakers. * A faulty touchpad/thermostat. Replace it. * A loose connection at the touchpad/thermostat. Replace the wire or tighten it. * The thermostat being set too high. Adjust it and rotate the knob to “warm.” * A faulty thermostat. Replace it. * No power output on the transformer secondary. Replace it. * An inoperative valve. Temporarily lock the steam valve open and replace it, or replace the hot water valve.

Daikin McQuay IM 934-5 Specifications

General

Brand	Daikin
Model	McQuay IM 934-5
Category	Air Conditioner
Language	English

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