Daikin 2MXS18NMVJU - Service Manual

Other manuals for Daikin 2MXS18NMVJU

Engineering Data661 pages

Installation Manual20 pages

Questions and Answers

J
Jessica BoyleAug 2, 2025
What to do if the operation lamp is blinking on my Daikin Air Conditioner?
- C
  catherine14Aug 2, 2025
  If the operation lamp on your Daikin Air Conditioner is blinking, you should first perform the diagnostic procedure. Also, ensure all indoor units connected to a multi-system outdoor unit are set to the same operation mode. If they aren't, set all indoor units to the same operation mode and check if the operation lamp stops blinking. You can also try setting all indoor units to cooling or heating mode to see if the operation lamp returns to normal.
A
atkinsonkennethAug 11, 2025
What to do if Daikin Air Conditioner stops suddenly and the operation lamp blinks?
- S
  Sarah GarciaAug 11, 2025
  If the Daikin Air Conditioner operation stops suddenly and the operation lamp blinks, it might be due to an operation mode conflict. Ensure all indoor units connected to the multi-system outdoor unit are set to the same operation mode. If they aren't, change them to the same mode and see if the blinking stops. If the mode is set to automatic, try setting all indoor units to either cooling or heating and check again.
D
Dennis MillerAug 22, 2025
Why is the operation lamp blinking on my Daikin 2MXS18NMVJU Air Conditioner?
- R
  Rachel JonesAug 22, 2025
  The operation lamp on your Daikin Air Conditioner might be blinking because a protection device in either the indoor or outdoor unit has been activated, or the thermistor is malfunctioning. It could also indicate a signal transmission error between the indoor and outdoor units.

Summary

Safety Cautions

Warnings and Cautions Regarding Safety of Workers

Important safety instructions for personnel involved in repair and maintenance.

Part 2 Specifications

RA Indoor Unit Specifications

SA Indoor Unit Specifications

Outdoor Unit Specifications

Part 3 Printed Circuit Board Connector Wiring Diagram

Indoor Unit Wiring Diagrams

Visual representation of indoor unit PCB connectors and their functions.

Outdoor Unit Wiring Diagrams

Visual representation of outdoor unit PCB connectors and their functions.

Part 4 Functions and Control

RA Indoor Unit Functions

SA Indoor Unit Functions

Control Specification

Technical details on how the system's operations are controlled.

Part 6 Service Diagnosis

General Problem Symptoms and Check Items

Common issues and initial checks for troubleshooting problems.

Troubleshooting with LED Indicators

Guide to diagnosing issues using unit LED indicators.

Service Diagnosis Procedures

Step-by-step procedures for diagnosing faults.

Remote Controller Error Codes

List of error codes displayed on remote controllers and their meanings.

RA Indoor Unit Troubleshooting

Detailed troubleshooting steps for specific RA indoor unit faults.

SA Indoor Unit Troubleshooting

Detailed troubleshooting steps for specific SA indoor unit faults.

Outdoor Unit Troubleshooting

Detailed troubleshooting steps for outdoor unit faults.

Component Checks

Procedures for checking the functionality of various system components.

Part 7 Trial Operation and Field Settings

Pump Down Operation

Wiring Error Check Function

Trial Operation

Field Settings

Daikin 2MXS18NMVJU Specifications

General

Cooling Capacity	5.0 kW
Refrigerant	R-32
Power Supply	220-240V, 50Hz
Number of Connectable Indoor Units	2
Type	Multi Split
Energy Efficiency Ratio (Heating)	11.2 BTU/W
Seasonal Energy Efficiency Ratio (SEER)	6.10
Indoor Unit Noise Level	19 dB(A)
Indoor Unit Dimensions (WxHxD)	Varies depending on the connected indoor unit model
Indoor Unit Weight	Varies depending on the connected indoor unit model