System air conditionerOPERATION MANUALMODELRXYQ72MTJURXYQ96MTJURXYQ144MTJURXYQ168MTJURXYQ192MTJUREYQ72MTJUREYQ96MTJUREYQ144MTJUREYQ168MTJUREYQ192MTJURead these instructions carefully before installation.Keep this manual in a handy place for future reference.This manual should be left with the equipment owner.

operation manual

Figure

OPERATION RANGE

OPTIMUM OPERATION

SEASONAL MAINTENANCE

TROUBLE SHOOTING

Daikin RXYQ72MTJU Operation Manual

safety cautions

cautions regarding products after repair

inspection after repair

using icons

Part 1 General Information

Model Names of Indoor/Outdoor Units

External Appearance

Model Selection

Part 2 Specifications

Specifications

Indoor Units

ceiling suspended type

wall mounted type

floor standing type

BS Units

Part 3 Refrigerant Circuit

Refrigerant Circuit

BSVQ36, 60M

Functional Parts Layout

front view

Refrigerant Flow for Each Operation Mode

Part 4 Function

Function General

Operation Mode

Basic Control

Compressor PI Control

Electronic Expansion Valve PI Control

Cooling Operation Fan Control

Cooling / Heating Operation

Special Control

Oil Return Operation

Defrosting Operation

Pressure Equalizing Control

Pump-down Residual Operation

Restart Standby

Stopping Operation

Protection Control

Low Pressure Protection Control

Discharge Pipe Protection Control

Inverter Protection Control

STD Compressor Overload Protection

Other Control

Emergency Operation

Demand Operation

Outline of Control (Indoor Unit)

remote controller

Thermostat Sensor in Remote Controller

Freeze Prevention

Part 5 Test Operation

Test Operation

check operation

Operation When Power is Turned On

Outdoor Unit PC Board Layout

Field Setting

simplified remote controller

detailed explanation of setting modes

Field Setting from Outdoor Unit

setting by pushbutton switches

image of operation in the case of a

Part 6 Troubleshooting

Troubleshooting by Remote Controller

Self-diagnosis by Wired Remote Controller

Self-diagnosis by Wireless Remote Controller

Operation of the Remote Controller's Inspection Test Operation Button

Remote Controller Service Mode

Remote Controller Self-Diagnosis Function

malfunction code indication by outdoor unit pcb

Troubleshooting by Indication on the Remote Controller

PC Board Defect

Fan motor lock, overload

Malfunction of Swing Flap Motor (MA)

malfunction of moving part of electronic

drain level above limit

malfunction of thermistor (r1t) for

pc board defect

actuation of high pressure switch

actuation of low pressure sensor

E5" Compressor Motor Lock (INV Compressor)

E6" Compressor Motor Overcurrent/Lock (STD Compressor)

F6" Refrigerant Overcharged

H7" Abnormal Outdoor Fan Motor Signal

malfunction of discharge pipe

malfunction of thermistor (r2t) for

outdoor unit heat exchanger

J7" Malfunction of Receiver Outlet Liquid Pipe Thermistor (R6T)

J8" Malfunction of Oil Equalizing Pipe Thermistor (R7T)

J9" Malfunction of Sub-cooling Heat Exchanger Gas Pipe Thermistor (R5T)

temperature rise

inverter compressor abnormal

inverter current abnormal

inverter start up error

inverter over-ripple protection

temperature rise sensor

U1" Outdoor Unit: Reverse Phase, Open Phase

Instantaneous Failure

REYQ144MTJU

REYQ168MTJU

REYQ192MTJU

REYQ72MTJU

REYQ96MTJU

RXYQ144MTJU

RXYQ168MTJU

RXYQ192MTJU

RXYQ72MTJU

RXYQ96MTJU


Contents operation manual Table Of Contents Table Of Contents Table Of Contents Figure OPERATION RANGE OPTIMUM OPERATION SEASONAL MAINTENANCE TROUBLE SHOOTING	System air conditionerOPERATION MANUALMODELRXYQ72MTJURXYQ96MTJURXYQ144MTJURXYQ168MTJURXYQ192MTJUREYQ72MTJUREYQ96MTJUREYQ144MTJUREYQ168MTJUREYQ192MTJURead these instructions carefully before installation.Keep this manual in a handy place for future reference.This manual should be left with the equipment owner. Next / 16