Daikin FDMQ24RVJU

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Service

Manual

Inverter Pair

Duct Connected Type

FDMQ-R Series

SiUS071735EB

[Applied Models]

 Inverter Pair : Heat Pump

Main Page

Table of Contents3
Safety Cautions6
Warnings and Cautions Regarding Safety of Workers6
Warnings and Cautions Regarding Safety of Users8
Icons Used11
Part 1 List of Functions12
Functions13
Part 2 Specifications14
Specifications15
Part 3 Printed Circuit Board Connector Wiring Diagram20
Indoor Unit21
Fdmq09/12/15/18/24Rvju21
Wired Remote Controller23
Brc1E7323
Wireless Remote Controller Receiver24
Brc082A4324
Outdoor Unit25
Rx09/12R25
Rx15/18/24R26
Part 4 Functions and Control27
Main Functions28
Temperature Control28
Frequency Principle28
Fan Speed Control for Indoor Unit30
Program Dry Operation31
Clock and Calendar Setting (with Wired Remote Controller BRC1E73)32
Schedule TIMER Operation (with Wired Remote Controller BRC1E73)34
Drain Pump Control37
Hot Start Control (in Heating Operation Only)39
Other Functions40
Control Specification41
Mode Hierarchy41
Frequency Control42
Controls at Mode Changing/Start-Up44
Discharge Pipe Temperature Control46
Input Current Control47
Freeze-Up Protection Control48
Heating Peak-Cut Control49
Outdoor Fan Control50
Liquid Compression Protection Function50
Defrost Control51
Electronic Expansion Valve Control52
Malfunctions55
Part 5 Remote Controller56
Wired Remote Controller (BRC1E73)57
Wireless Remote Controller (BRC082A43)63
Part 6 Service Diagnosis65
General Problem Symptoms and Check Items67
Troubleshooting with LED68
Indoor Unit68
Outdoor Unit68
Service Diagnosis69
Wired Remote Controller (BRC1E73)69
Wireless Remote Controller (BRC082A43)71
Troubleshooting75
Error Codes and Description75
Indoor Unit PCB Abnormality76
Drain Level Control System Abnormality77
Indoor Fan Motor (DC Motor) or Related Abnormality78
Indoor Fan PCB Abnormality80
Humidifier or Related Abnormality81
Thermistor or Related Abnormality82
Remote Controller Thermistor Abnormality83
Signal Transmission Error (between Indoor Unit and Remote Controller)84
Signal Transmission Error (between MAIN Remote Controller and SUB Remote Controller)85
Low-Voltage Detection or Over-Voltage Detection86
Signal Transmission Error (between Indoor Unit and Outdoor Unit)88
Mismatching of Indoor Unit and Outdoor Unit90
Outdoor Unit PCB Abnormality91
OL Activation (Compressor Overload)92
OL Activation (Compressor Overload) or HPS Activation (High Pressure Switch)94
Compressor Lock97
DC Fan Lock (Outdoor Fan Motor)98
Input Overcurrent Detection99
Four Way Valve Abnormality100
Discharge Pipe Temperature Control102
High Pressure Control in Cooling103
System Shutdown Due to Temperature Abnormality in Compressor105
Compressor System Sensor Abnormality106
Position Sensor Abnormality107
DC Voltage/Current Sensor Abnormality109
Thermistor or Related Abnormality (Outdoor Unit)110
Electrical Box Temperature Rise112
Radiation Fin Temperature Rise113
Output Overcurrent Detection114
Check116
Thermistor Resistance Check116
Indoor Fan Motor Connector Check117
Power Supply Waveforms Check117
Electronic Expansion Valve Check118
Four Way Valve Performance Check119
Inverter Unit Refrigerant System Check119
Inverter Analyzer Check120
Outdoor Fan Motor Check122
Installation Condition Check123
Discharge Pressure Check123
Outdoor Fan System Check124
Main Circuit Short Check124
Power Module Check126
Part 7 Trial Operation and Field Settings128
Pump down Operation129
Forced Cooling Operation130
Trial Operation131
Field Settings134
How to Change the Field Settings134
Overview of the Field Settings137
MAIN/SUB and Address Setting for Wireless Remote Controller138
Facility Setting (Cooling at Low Outdoor Temperature)140
Silicone Grease on Power Transistor/Diode Bridge141
Part 8 Appendix142
Piping Diagrams143
Indoor Unit143
Outdoor Unit144
Wiring Diagrams146
Indoor Unit146
Outdoor Unit147
Operation Limit150

Daikin FDMQ24RVJU - Manual

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