Daikin Super Multi NX 4AMX80E2V3B - User Manual

Service
Manual
SiBE121021_C
E-Series / F-Series / G-Series
[Applied Models]
● Inverter Multi : Cooling Only
● Inverter Multi : Heat Pump

Daikin Super Multi NX 4AMX80E2V3B Specifications

General

Brand	Daikin
Model	Super Multi NX 4AMX80E2V3B
Category	Air Conditioner
Language	English

Summary

Part 3 Printed Circuit Board Connector Wiring Diagram

Remote Controller

Part 4 Function and Control

Temperature Control

Frequency Principle

2-Area INTELLIGENT EYE Operation

INTELLIGENT EYE Operation

Inverter POWERFUL Operation

Explains how to maximize cooling/heating capacity.

Drain Pump Control

Freeze Prevention Control

Hot Start Control (In Heating Operation Only)

Frequency Control

Part 6 Service Diagnosis

Troubleshooting with LED

Guides troubleshooting based on LED indicators on indoor units.

Indoor Unit

Outdoor Unit

Problem Symptoms and Measures

Lists common problems and their corresponding solutions.

Service Check Function

Provides procedures for service check functions.

RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series

SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series

Code Indication on Remote Controller

Lists error codes displayed on remote controllers and their meanings.

RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series

Error codes for RA indoor units and their descriptions.

SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series

Error codes for SA indoor units and their descriptions.

Outdoor Unit

Error codes and LED indications for outdoor units.

Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series

Detailed troubleshooting for RA indoor units.

Freeze-up Protection Control or Heating Peak-cut Control

Troubleshooting for freeze-up and peak-cut controls.

Thermistor or Related Abnormality (Indoor Unit)

Troubleshooting for indoor unit thermistor abnormalities.

Front Panel Open; Close Fault (FTXG and CTXG Series)

Signal Transmission Error (between Indoor Unit and Outdoor Unit)

Troubleshooting signal transmission issues between units.

Unspecified Voltage (between Indoor Unit and Outdoor Unit)

Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series

Detailed troubleshooting for SA indoor units.

Indoor Unit PCB Abnormality

Troubleshooting steps for SA indoor unit PCB issues.

Drain Water Level System Abnormality

Troubleshooting drain system issues.

Fan Motor or Related Abnormality

Troubleshooting for SA indoor unit fan motor issues.

Swing Motor Lock (FHQ Series)

Drain System Abnormality

Troubleshooting drain system issues in SA indoor units.

Thermistor or Related Abnormality

Troubleshooting thermistor issues in SA indoor units.

Remote Controller Thermistor Abnormality

Signal Transmission Error (between Indoor Unit and Remote Controller)

Troubleshooting signal errors between units and controllers.

Signal Transmission Error (between MAIN Remote Controller and SUB Remote Controller)

Troubleshooting signal errors between multiple remote controllers.

Field Setting Abnormality

Troubleshooting for Outdoor Unit

Detailed troubleshooting for outdoor units.

Anti-icing Function

Outdoor Unit PCB Abnormality

Troubleshooting outdoor unit PCB problems.

OL Activation (Compressor Overload)

Troubleshooting compressor overload issues.

Compressor Lock

Troubleshooting compressor lock conditions.

DC Fan Lock

Input Overcurrent Detection

Troubleshooting input overcurrent detection.

Discharge Pipe Temperature Control

High Pressure Control in Cooling

Troubleshooting high pressure control in cooling mode.

Compressor Sensor System Abnormality

Position Sensor Abnormality

CT or Related Abnormality

Thermistor or Related Abnormality (Outdoor Unit)

Electrical Box Temperature Rise

Radiation Fin Temperature Rise

Output Overcurrent Detection

Troubleshooting output overcurrent detection.

Refrigerant Shortage

Troubleshooting refrigerant shortage issues.

Low-voltage Detection or Over-voltage Detection

Troubleshooting voltage detection issues.

Signal Transmission Error (on Outdoor Unit PCB)

Troubleshooting signal transmission errors on the outdoor unit PCB.

Anti-icing Function in Other Rooms; Unspecified Voltage (between Indoor and Outdoor Units)

Check

Thermistor Resistance Check

Procedure to check thermistor resistance.

Fan Motor Connector Check

Hall IC Check

Power Supply Waveform Check

Electronic Expansion Valve Check

Procedure to check the electronic expansion valve.

Four Way Valve Performance Check

Procedure to check four-way valve performance.

Inverter Unit Refrigerant System Check

“Inverter Checker” Check

Procedure for using the inverter checker.

Rotation Pulse Check on the Outdoor Unit PCB

Installation Condition Check

Discharge Pressure Check

Outdoor Fan System Check

Capacitor Voltage Check

Power Module Check

Part 7 Removal Procedure

Outdoor Unit - 50~75 Class

Removal of Outdoor Fan; Fan Motor

Steps for removing the outdoor fan and fan motor.

Removal of Four Way Valve

Steps for removing the four-way valve.

Outdoor Unit - 80;90 Class

Removal of Outer Panels

Removal of Electrical Box

Removal of PCBs

Steps for removing Printed Circuit Boards (PCBs).

Removal of Fan Motor

Steps for removing the fan motor.

Removal of Coils; Thermistors

Removal of Distributor

Removal of Four Way Valve Coil

Steps for removing the four-way valve coil.

Removal of Sound Blankets

Removal of Compressor

Steps for removing the compressor.

Part 8 Trial Operation and Field Settings

Pump Down Operation

Forced Operation

Wiring Error Check Function

Function to correct wiring errors automatically.

Trial Operation

Procedures for trial operation of the air conditioner.

Field Settings