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Daikin AKZ9 Series - User Manual

Daikin AKZ9 Series
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Built-in breaker
model
Built-in tank
model
Different-voltage
model
CE model
Built-in heater
model
Installation
Models
Oil Cooling Unit and Accessories
4
Precautions for Installation 6
Method of Transportation / Conveyance / Storage
5
Reference for Pipe Selection 7
Electric Wiring 8
CONTENTS
1
Circulating type
Standard
model
Menu
Series
Built-in
breaker
model (–B)
CE model
(–C)
Built-in
heater
model (–H)
Built-in
tank model
(–T)
Different-
voltage
AKZ149
AKZ329
AKZ439
Instruction Manual
AKZ9 Series
If the air filter is clogged, the cooling performance deteriorates,
causing excess power consumption.
Clean the air filter periodically to reduce power consumption.
Thank you for purchasing DAIKIN Oil Cooling Unit (“OILCON”).
This instruction manual includes instructions for using the Oil
Cooling Unit.
To ensure proper use of this product, be sure to read through this
instruction manual before using it.
After reading this manual, keep it handy for your future reference.
Monitor Items 23
Timer Operation 24
Additional Setting Functions 25
Setting Additional Function 27
For Temperature Control Improvement 30
Alarm/Warning Output Logic 33
Alarm Settings for Optional Protection
Devices (Installed by User) 33
Handling
Before Operation
13Model Identification and Specifications
14
Part Names and Functions 15
Names and Functions of the Control Panel Parts
16
Checking Initial Operating Conditions 18
Operation Setting 19
Holding Constant Oil Temperature 20
Tuning Oil Temperature to Room Temperature
(or Machine Temperature)
21
Cooling Oil at Constant Capacity (%) 22
Optional Parts
Machine temperature tuning control 34
Returned oil temperature control 35
Communication with main machine 36
Maintenance
37
38
Maintenance/Inspection
• Daily maintenance/inspection
• Periodic maintenance/inspection
To leave the unit unused for a long period
CE compliance declaration
42CE compliance declaration
Troubleshooting
When the unit operation seems abnormal
although no alarm is activated
When an alarm is activated
When a warning is generated
Safety Precautions
Installation
Procedure
Before
Operation
Useful
Functions
Maintenance
Troubleshooting
Supplement
Document
Optional
Functions
Operating
Procedure
DAIKIN Oil Cooling Unit
(“OILCON”)
Proper use results in power saving
Compliant with
ROHS
PIM00318A
PIM00318A_EN.fm Page -1 Tuesday, October 26, 2010 12:37 PM

Questions and Answers

  • H
    hortonmaryAug 20, 2025
    How to troubleshoot Daikin Air Conditioner when the unit doesn't turn on?
    • C
      Chris JohnsonAug 20, 2025
      If your Daikin Air Conditioner isn't powering on, check if the power cable is properly connected to the power supply terminal. Also, inspect the transformer's wire connection. If the transformer fuse has melted, it is recommended to consult a DAIKIN service center.
  • V
    Valerie TurnerAug 22, 2025
    What to do if my Daikin Air Conditioner pump and compressor are running but oil cannot be cooled?
    • P
      Peter AndersonAug 22, 2025
      If your Daikin Air Conditioner's pump and compressor are running, but the oil isn't cooling, here are a few things to check: * Ensure there are no obstructions near the air intake or exhaust port. * Clean the air filter. * Verify that the temperature setting is appropriate. If the exhaust air temperature is almost the same as the room temperature while the compressor is running, the refrigerant gas may be low and needs refilling. Also, if the room temperature is high, compare the unit's capacity in the operating temperature range against the catalog to see if you need a model with higher capacity.
  • T
    Thomas BirdAug 25, 2025
    Why does my Daikin Air Conditioner show a high pressure error?
    • M
      Michael WilliamsAug 25, 2025
      A high pressure error on your Daikin Air Conditioner can occur if the oil or room temperature is too high. Ensure you are using the unit within its specified operating range. Also, make sure there are no obstructions blocking the air intake or exhaust port, maintaining a clear space of at least 500 mm. A clogged air filter can also cause this issue, so clean it. If none of these solve the problem, contact the DAIKIN Contact Center.
  • L
    Lisa JenkinsAug 26, 2025
    What to do if oil does not flow in Daikin AKZ9 Air Conditioner, although the pump is running?
    • V
      valerie41Aug 27, 2025
      If oil isn't flowing in your Daikin Air Conditioner despite the pump running, and the pump sound level is high, check the following: 1. Ensure the pump suction pipe connection is tight. Check the pipe packing and retighten it securely. 2. Clean the suction strainer. If the oil in the oil tank is dirty, replace it. 3. Refill oil into the oil tank if the oil level is low. 4. If there's a large pressure loss in the oil discharge pipe, increase the oil pipe diameter and shorten the pipe length.
  • A
    Alexander NunezAug 28, 2025
    What causes a compressor high temperature error in my Daikin AKZ9?
    • K
      Kristen CastilloAug 28, 2025
      A compressor high temperature error in your Daikin Air Conditioner can be caused by a few factors. First, check if the oil or room temperature is higher than the specified operating range and adjust accordingly. Ensure that there are no obstructions near the air intake or exhaust port that could impede ventilation. Lastly, a dirty air filter or condenser can also lead to this error, so make sure to clean them.
  • M
    Miranda PetersenAug 29, 2025
    What to do if Daikin AKZ9 Air Conditioner compressor does not run, although the pump is running?
    • T
      tammyortizAug 30, 2025
      If your Daikin Air Conditioner's compressor isn't running even though the pump is, it could be due to several reasons: * The compressor restart prevention timer may be active. Check if the compressor starts after the timer's preset time has elapsed. * The low oil temperature protection device might be activated. Ensure the inlet oil temperature is 5°C or higher for normal operation. * The low ambient temperature protection device could be activated. Make sure the room temperature is 0°C or higher. * The capacity setting might be at 0% (Mode 9). Change the operation mode to a suitable setting.
  • L
    Linda SalazarAug 31, 2025
    What causes the pump over-current relay to activate on my Daikin Air Conditioner?
    • J
      Joanna PhillipsSep 1, 2025
      If the pump over-current relay is activated on your Daikin Air Conditioner, it could be due to several reasons: * The pump might be overloaded with high-viscosity oil. Use an operating fluid that provides 1.4 to 200 mm2/s viscosity within the specified oil temperature range. * The power supply voltage may be too low, causing the pump current to increase. Check if the voltage is within the specified operating range and look for any instantaneous voltage drops when peripheral equipment starts up. * There may be a break in the pump motor wiring (open-phase), or a foreign object caught in the pump, or a fault in the pump motor. In these cases, replace the pump motor.
  • D
    Derek SandersSep 2, 2025
    How to fix DC fan motor lock error on Daikin AKZ9?
    • M
      Melissa BrockSep 2, 2025
      To address a DC fan motor lock error on your Daikin Air Conditioner, check the following: * Inspect the signal and engine wires between the filter board and the inverter board for any breaks or loose connections, as a drop in DC voltage can cause insufficient fan motor speed. * Examine the connector insertion and wires for breaks, as a fan motor-control board communication error may be the cause. If necessary, replace the control board. * If the DC fan motor is faulty, replace it.
  • R
    Robert BrownSep 4, 2025
    Why can't I set the operation on my Daikin AKZ9 Air Conditioner?
    • G
      Gina WilliamsSep 5, 2025
      If you're unable to set the operation on your Daikin Air Conditioner, here are a couple of things to check: * If you see “---” on the data display, the temperature sensor for the selected operation mode may not be connected. Ensure the corresponding temperature sensor is properly connected. * If “---” briefly appears when you press the [ENT] key, the protect switch might be ON. Turn OFF the protect switch (SW1) on the control board.
  • J
    Joshua HorneSep 6, 2025
    What to do if Daikin Air Conditioner pump does not run?
    • V
      vincentcooperSep 6, 2025
      If the pump on your Daikin Air Conditioner isn't running, check the following: * Ensure the remote control input ([10]–[11]) is ON by checking the connection of the remote control input. * Verify that the unit isn't set to the operation lock mode. If it is, cancel the Lock mode on the control panel.

Summary

Safety Precautions

Precautions for Installation

Safety measures for the installation process.

Installation

Transportation, Conveyance, and Storage

Procedures and precautions for moving and storing the unit.

Installation Site and Oil Piping Precautions

Guidelines for selecting an appropriate installation location and oil piping.

Pipe Selection Reference

Guidance on choosing appropriate pipe sizes and lengths.

Electric Wiring Instructions

Instructions and diagrams for connecting electrical wiring.

Wiring Procedure

Detailed steps for electrical wiring, including circuit breaker installation.

Model Identification and Specifications

Model Identification Guide

Explains how to identify the specific model of the unit.

Before Operation

Pre-Operation Checks

Verifies operating environment, installation, oil piping, applicable oil, and electrical wiring.

Part Names and Functions

Control Panel Overview

Operation Modes

Mode Changing Operation

How to switch between different operating modes.

Checking Initial Operating Conditions

Changing Operation Settings

Explains how to adjust operational parameters and settings.

Operation Settings

Holding Constant Oil Temperature

Setting the unit to maintain a constant oil temperature.

Tuning Oil Temperature Control

Adjusting oil temperature based on ambient or machine temperature.

Cooling Oil at Constant Capacity (%)

Operating the unit at a specified cooling capacity percentage.

Monitor Items

Monitor Operating Procedure

Steps to select and view monitored items on the control panel.

Timer Operation

Timer Operating Procedure

Steps to set the timer for starting the unit.

Additional Setting Functions

Parameter List

Details of parameters for additional setting functions.

Parameter Setting Procedure

Temperature Range Warning Function

Parameter Setting for Temperature Warnings

Setting parameters to define temperature warning conditions.

Application of Temperature Range Warning

Illustrates how temperature range warnings are applied.

Parameter Settings Group A

Parameter Settings Group B

Auto-Tuning Mode for Temperature Control

Auto-Tuning Function Outline

Explains auto-tuning for improving temperature control performance.

Auto-Tuning Operation Outline

Steps involved in executing the auto-tuning mode.

Operation Flow

Alarm;Warning Output Logic

Alarm Settings for Optional Protection Devices

How to configure alarms for user-installed protection devices.

Optional Parts

Machine Temperature Tuning Control

Details on mounting and using machine temperature tuning thermistors.

Mounting Procedure for Machine Tuning

Steps for installing machine tuning thermistors.

Returned Oil Temperature Control

Details on mounting and using returned oil temperature thermistors.

Mounting Procedure for Returned Oil Control

Steps for installing returned oil temperature thermistors.

Communication with Main Machine

How to connect the unit to a main machine for data exchange.

Mounting Procedure for Communication Option

Steps for mounting the communication option board.

Maintenance and Inspection

Daily Maintenance;Inspection

Daily checks for oil level, leaks, and voltage.

Periodic Maintenance;Inspection

Periodic checks for suction strainer, air filter, condenser, etc.

Long-Term Storage Precautions

Precautions for storing the unit for extended periods.

Troubleshooting

Troubleshooting Abnormal Operation

Common issues and corrective actions when the unit operates abnormally without alarms.

Alarm Handling

Alarm List

Lists alarm codes, causes, and corrective actions.

Warning Handling

Warning List

Lists warning codes, causes, and corrective actions.

CE Compliance Declaration

Daikin AKZ9 Series Specifications

General IconGeneral
BrandDaikin
ModelAKZ9 Series
CategoryAir Conditioner
LanguageEnglish

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