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Daikin Super Multi NX B series User Manual

Daikin Super Multi NX B series
302 pages
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B-Series
[Applied Models]
z
zz
zInverter Multi : Cooling Only
z
zz
zInverter Multi : Heat Pump
Si12-308
Service
Manual

Table of Contents

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Daikin Super Multi NX B series Specifications

General IconGeneral
BrandDaikin
ModelSuper Multi NX B series
CategoryAir Conditioner
LanguageEnglish

Summary

Service Manual

Introduction

Provides an overview of the manual and general safety information.

Part 1 List of Functions

Cooling Only Models

Details functions available for cooling-only models across various categories.

Heat Pump Models

Details functions available for heat pump models across various categories.

Part 2 Specifications

Indoor Units - Cooling Only

Technical specifications for indoor units designed for cooling-only operation.

Outdoor Units - Cooling Only

Technical specifications for outdoor units designed for cooling-only operation.

Indoor Units - Heat Pump

Technical specifications for indoor units designed for heat pump operation.

Outdoor Units - Heat Pump

Technical specifications for outdoor units designed for heat pump operation.

Part 3 Printed Circuit Board Connector Wiring Diagram

Wall Mounted Type 25 / 35 Class

Connector wiring diagram for wall-mounted indoor units of 25/35 class.

Wall Mounted Type 50 / 60 / 71 Class

Connector wiring diagram for wall-mounted indoor units of 50/60/71 class.

Floor / Ceiling Suspended Dual Type

Connector wiring diagram for floor/ceiling suspended dual type indoor units.

Duct Connected Type

Connector wiring diagram for duct-connected indoor units.

Floor Standing Type

Connector wiring diagram for floor-standing indoor units.

Outdoor Units

Connector wiring diagram for outdoor units.

Part 4 Function and Control

Main Functions

Details the main functions of the air conditioner system and their operational principles.

Function of Main Structural Parts

Explains the function of key structural components within the air conditioner system.

Control Specification

Details the control logic and specifications for various operating modes and functions.

Part 5 System Configuration

System Configuration

Overview of system configuration, operation instructions, and important instructions.

Instruction

Provides instructions, manual contents by models, safety precautions, and part identification.

Part 6 Service Diagnosis

Caution for Diagnosis

Important cautions to be observed before performing any diagnostic procedures.

Problem Symptoms and Measures

Lists common symptoms and their corresponding measures for diagnosing and resolving issues.

Service Check Function

Explains how to use the service check function to diagnose system codes and identify faults.

Code Indication on the Remote Controller

Provides a list of error codes displayed on the remote controller and their descriptions.

Troubleshooting

Detailed troubleshooting steps for various indoor and outdoor unit issues.

Part 7 Removal Procedure

Outdoor Unit (80 / 90 Class)

Step-by-step instructions for removing outer panels and components from outdoor units (80/90 class).

Outdoor Unit (52 / 58 / 68 / 75 Class)

Step-by-step instructions for removing outer panels and components from outdoor units (52/58/68/75 class).

Part 8 Others

Test Run from the Remote Controller

Procedure for performing test runs using the remote controller in cooling or heating modes.

Jumper Settings

Explains jumper settings for two units in one room and PCB jumper functions like power failure recovery.

Part 9 Appendix

Piping Diagrams

Contains piping diagrams for indoor and outdoor units, illustrating refrigerant flow and connections.

Wiring Diagrams

Provides wiring diagrams for indoor and outdoor units, detailing electrical connections and components.

Drawings & Flow Charts

Anti-icing function in other rooms

Flow chart or diagram related to the anti-icing function in multiple rooms.

Automatic air flow control

Diagram or flow chart illustrating automatic control of air flow.

Automatic operation

Diagram or flow chart explaining the automatic operation mode.

Auto-swing

Diagram or flow chart illustrating the auto-swing function for airflow direction.

Capacitor voltage check

Flow chart for checking capacitor voltage as part of troubleshooting.

Compressor lock

Troubleshooting flow chart for compressor lock issues.

Compressor overload

Troubleshooting flow chart for compressor overload (OL activation).

Compressor protection function

Diagram or flow chart related to compressor protection functions.

Connection pipe condensation preventing function

Diagram or flow chart illustrating the pipe condensation prevention function.

control PCB

Wiring or schematic diagram for the control PCB.

cooling / heating mode lock

Diagram or flow chart for setting the cooling/heating mode lock.

CT or related abnormality

Troubleshooting flow chart for CT or related abnormalities.

DC fan lock

Troubleshooting flow chart for DC fan lock.

defrost control

Flow chart or diagram illustrating the defrost control process.

discharge pipe control

Diagram or flow chart for discharge pipe temperature control.

discharge pipe temperature control

Diagram or flow chart for discharge pipe temperature control.

discharge pressure check

Flow chart for performing a discharge pressure check.

display PCB

Wiring or schematic diagram for the display PCB.

electrical box temperature rise

Troubleshooting flow chart for electrical box temperature rise.

electronic expansion valve check

Flow chart for checking the electronic expansion valve.

electronic expansion valve coil

Diagram showing the removal of the electronic expansion valve coil.

electronic expansion valve control

Diagram or flow chart illustrating electronic expansion valve control.

error codes and description of fault

List of error codes and descriptions of faults for remote controller indications.

F3

Troubleshooting flow chart for error code F3 (Discharge Pipe Temperature Control).

fan control

Diagram or flow chart illustrating fan control logic.

fan motor

Diagram or flow chart related to the fan motor.

fan motor (DC motor) or related abnormality

Troubleshooting flow chart for DC fan motor abnormalities.

fan motor connector output check

Flow chart for checking the fan motor connector output.

fan speed control

Diagram or flow chart illustrating fan speed control.

forced operation mode

Flow chart illustrating the forced operation mode for service and installation.

four way valve abnormality

Troubleshooting flow chart for four way valve abnormalities.

four way valve operation compensation

Diagram or flow chart for four way valve operation compensation.

four way valve performance check

Flow chart for checking the four way valve performance.

freeze-up protection control

Flow chart related to freeze-up protection control.

freeze-up protection control or high pressure control

Troubleshooting flow chart for freeze-up protection and high pressure control.

frequency control

Flow chart illustrating the frequency control logic.

frequency principle

Diagram explaining the principle of frequency control for the compressor.

functions

List of available functions for the air conditioner models.

gas pipe isothermal control during cooling

Diagram or flow chart for gas pipe isothermal control during cooling.

gas pipe thermistor

Troubleshooting flow chart for gas pipe thermistor issues.

heating peak-cut control

Flow chart illustrating the heating peak-cut control.

home leave operation

Diagram or flow chart explaining the home leave operation.

hot start function

Diagram or flow chart illustrating the hot start function.

indoor heat exchanger thermistor

Troubleshooting flow chart for indoor heat exchanger thermistor.

indoor liquid pipe thermistor

Troubleshooting flow chart for indoor liquid pipe thermistor.

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