REMOVALPROCEDURES E R V I C E M A N U A LOutdoor UnitInverterMulti Type4.0/5.0 kW ClassSi121091

Daikin 2MXU40GV1B Service Manual Removal Procedure

Part 4 Function and Control

Main Functions

Thermostat Control

Automatic Operation

Programme Dry Function

Airflow Direction Control

fan speed control for indoor units

HUMID HEAT Operation

Fresh Air Supply Ventilation

AREA INTELLIGENT EYE

Inverter POWERFUL Operation

ECONO Mode

NIGHT SET Mode

Other Functions

Table for Special Modes

Function of Thermistor

Control Specification

Automatic switching for HUMID HEAT operation room

Frequency Control

Controls at Mode Changing / Start-up

Discharge Pipe Temperature Control

Freeze-up Protection Control

Fan Control

Defrost Control

Electronic Expansion Valve Control

Malfunctions

Forced Operation Mode

Additional Function

Part

indoor units

indoor unit installation

outdoor units

pump down operation

system configuration

names of parts

auto · dry · cool · heat · fan operation

adjusting the airflow direction

operation mode

powerful and outdoor unit quiet operation

econo operation

timer operation

copy mode

note for multi system

Service Diagnosis

service check function

failure diagnosis by led indication

failure diagnosis by remote controller

troubleshooting

air conditioner does not run

when operation starts, safety breaker works

air conditioner makes big noise and vibration

air does not humidified enough

indoor unit pcb abnormality

freeze-up protection control or high pressure control

fan motor (dc motor) or related abnormality

thermistor or related abnormality (indoor unit)

humidity sensor abnormality

signal transmission error (indoor unit - outdoor unit)

outdoor unit

incomplete setting for hose length

outdoor unit pcb abnormality

compressor lock

dc fan lock

input overcurrent detection

high pressure control in cooling

compressor sensor system abnormality

damper abnormality

position sensor abnormality

dc voltage / dc current sensor abnormality

thermistor or related abnormality (outdoor unit)

abnormal temperature in electrical box

temperature rise in radiation fin

output overcurrent

insufficient gas

signal transmission error on outdoor unit pcb

heater wire abnormality

humidification fan outlet thermistor abnormality

lights-out of microcomputer status lamp

fan motor connector output check

thermistor resistance check

installation condition check

power supply waveform check

refrigerant system check

power transistor check

discharge pressure check

electronic expansion valve check

rotating pulse input on outdoor unit pcb check

main circuit short check

four-way valve performance check

2MXU40GV1B

Part 1 List of Functions

Functions

Part 2 Specifications

Specifications

Outdoor Units

Part 3 Printed Circuit Board Connector Wiring Diagram

Printed Circuit Board Connector Wiring Diagram

Program Dry Function

Fan Speed Control for Indoor Units

Input Current Control

Heating Peak-cut Control

Liquid Compression Protection Function 2

SiBE12

Part 5 Installation / Operation Manual

Installation Manual

System Configuration

Operation Manual

AUTO · DRY · COOL · HEAT · FAN Operation

Adjusting the Airflow Direction

COMFORT AIRFLOW and INTELLIGENT EYE Operation

POWERFUL and OUTDOOR UNIT QUIET Operation

ECONO Operation

TIMER Operation

WEEKLY TIMER Operation

Note for Multi System

Part 6 Service Diagnosis

Service Check Function

Failure Diagnosis by Remote Controller

Troubleshooting

Air conditioner does not run

Air conditioner runs but does not cool (heat)

When operation starts, safety breaker works

Air conditioner makes big noise and vibration

Air is not humidified enough

Indoor Unit PCB Abnormality

Freeze-up Protection Control or Heating Peak-cut Control

Fan Motor (DC Motor) or Related Abnormality

Thermistor or Related Abnormality (Indoor Unit)

Humidity Sensor Abnormality

Signal Transmission Error (Indoor Unit - Outdoor Unit)

Incompatible Power Supply between Indoor Unit and Outdoor Unit

Incomplete Setting for Hose Length

Outdoor Unit PCB Abnormality

OL Activation (Compressor Overload)

Compressor Lock

DC Fan Lock

Input Overcurrent Detection

High Pressure Control in Cooling

Compressor Sensor System Abnormality

Damper Abnormality

Position Sensor Abnormality

DC Voltage / DC Current Sensor Abnormality

Thermistor or Related Abnormality (Outdoor Unit)

Abnormal Temperature in Electrical Box

Temperature Rise in Radiation Fin

Output Overcurrent

Refrigerant Shortage

Over Voltage Protection / Low Voltage Protection

Outdoor Unit PCB Abnormality or Communication Circuit Abnormality

Signal Transmission Error on Outdoor Unit PCB

Fan Motor System Abnormality / Fan Lock

Heater Wire Abnormality

Humidifying Fan Outlet Thermistor Abnormality / Heater Temperature Abnormality

Lights-out of Microcomputer Status Lamp

Check

Thermistor Resistance Check

Installation Condition Check

Power Supply Waveform Check

safety precautions

precautions on installation

charging with refrigerant

2MXU50GV1B