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REYQ72
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Daikin REYQ72 Serveice Manual
R-410a heat recovery 60hz
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Introduction
Safety Cautions
Caution in Repair
Cautions Regarding Products after Repair
Inspection after Repair
Using Icons
Using Icons List
Preface
Part 1 General Information
Model Names of Indoor/Outdoor Units
External Appearance
Indoor Units
Outdoor Units
Model Selection
Part 2 Specifications
Specifications
Outdoor Units
Indoor Units
Ceiling Suspended Type
Wall Mounted Type
Floor Standing Type
BS Units
Part 3 Refrigerant Circuit
Refrigerant Circuit
Reyq72M, 96M
Bsvq36, 60M
Functional Parts Layout
Reyq72M, 96M
Front View
Refrigerant Flow for each Operation Mode
Part 4 Function
Function General
Symbol
Operation Mode
Basic Control
Normal Operation
Compressor PI Control
Electronic Expansion Valve PI Control
Cooling Operation Fan Control
Heat Exchange Mode in Heating Operation or Simultaneous Cooling / Heating Operation
Special Control
Startup Control
Oil Return Operation
Defrosting Operation
Pressure Equalizing Control
Pump-Down Residual Operation
Restart Standby
Stopping Operation
Protection Control
High Pressure Protection Control
Low Pressure Protection Control
Discharge Pipe Protection Control
Inverter Protection Control
STD Compressor Overload Protection
Other Control
Outdoor Unit Rotation
Emergency Operation
Demand Operation
Heating Operation Prohibition
Outline of Control (Indoor Unit)
Drain Pump Control
Thermostat Sensor in Remote Controller
Freeze Prevention
Part 5 Test Operation
Test Operation
Procedure and Outline
Check Operation
Operation When Power Is Turned on
Outdoor Unit PC Board Layout
Field Setting
Field Setting from Remote Controller
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
Image of Operation in the Case of B
Part 6 Troubleshooting
Troubleshooting by Remote Controller
The INSPECTION / TEST Button
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
Troubleshooting by Indication on the Remote Controller
A0" Indoor Unit: Error of External Protection Device
A1" Indoor Unit: PC Board Defect
A3" Indoor Unit: Malfunction of Drain Level Control System (S1L)
A6" Indoor Unit: Fan Motor (M1F) Lock, Overload
Fan Motor (M1F) Lock, Overload
A7" Indoor Unit: Malfunction of Swing Flap Motor (MA)
A9" Indoor Unit: Malfunction of Moving Part of
Malfunction of Moving Part of Electronic Expansion Valve (20E)
Electronic Expansion Valve (20E)
Expansion Valve (20E)
AF" Indoor Unit: Drain Level above Limit
AJ" Indoor Unit
Malfunction of Capacity Determination Device
AJ" Indoor Unit: Malfunction of Capacity Determination Device
C4" Indoor Unit: Malfunction of Thermistor (R2T)
For Heat Exchanger
C4" Indoor Unit: Malfunction of Thermistor (R2T) for
Heat Exchanger
For Gas Pipes
C5" Indoor Unit: Malfunction of Thermistor (R31T, R32T) for Gas Pipes
C9" Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air
CJ" Indoor Unit: Malfunction of Thermostat Sensor in
Remote Controller
E1" Outdoor Unit: PC Board Defect
E3" Outdoor Unit: Actuation of High Pressure Switch
Actuation of Low Pressure Sensor
E4" Outdoor Unit: Actuation of Low Pressure Sensor
Compressor Motor Lock (INV Compressor)
E5" Compressor Motor Lock (INV Compressor)
E6" Compressor Motor Overcurrent/Lock (STD Compressor)
Malfunction of Outdoor Unit Fan Motor
E7" Malfunction of Outdoor Unit Fan Motor
E9" Outdoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve (Y1E, Y2E, Y3E)
2.20 " F3 " Outdoor Unit
Abnormal Discharge Pipe Temperature
F3" Outdoor Unit: Abnormal Discharge Pipe Temperature
Refrigerant Overcharged
F6" Refrigerant Overcharged
Abnormal Outdoor Fan Motor Signal
H7" Abnormal Outdoor Fan Motor Signal
2.23 " H9 " Outdoor Unit
Malfunction of Thermistor for Outdoor Air (R1T)
H9" Outdoor Unit: Malfunction of Thermistor for Outdoor Air (R1T)
Current Sensor Malfunction
J2" Current Sensor Malfunction
J3" Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R31~32T)
J4" Malfunction of Heat Exchanger Gas Pipe Thermistor (R81, 82T)
J5" Outdoor Unit: Malfunction of Thermistor (R2T) for Suction Pipe
J6" Outdoor Unit: Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger
Malfunction of Receiver Outlet Liquid Pipe Thermistor (R6T)
J7" Malfunction of Receiver Outlet Liquid Pipe Thermistor (R6T)
Malfunction of Oil Equalizing Pipe Thermistor (R7T)
J8" Malfunction of Oil Equalizing Pipe Thermistor (R7T)
Malfunction of Sub-Cooling Heat Exchanger Gas Pipe Thermistor (R5T)
J9" Malfunction of Sub-Cooling Heat Exchanger Gas Pipe Thermistor (R5T)
2.32 " JA " Outdoor Unit
Malfunction of Discharge Pipe Pressure Sensor
JA" Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor
2.33 " JC " Outdoor Unit
Malfunction of Suction Pipe Pressure Sensor
JC" Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor
L4" Outdoor Unit: Malfunction of Inverter Radiating Fin
Temperature Rise
L5" Outdoor Unit: Inverter Compressor Abnormal
Inverter Compressor Abnormal
Inverter Current Abnormal
L8" Outdoor Unit: Inverter Current Abnormal
Inverter Start up Error
L9" Outdoor Unit: Inverter Start up Error
Inverter and Control PC Board
And Control PC Board
P1" Outdoor Unit: Inverter Over-Ripple Protection
2.40 " P4 " Outdoor Unit
Temperature Rise Sensor
PC Board or Faulty Combination of PC Board
PJ" Outdoor Unit: Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board
Electronic Expansion Valve Failure
Shortage or Electronic Expansion Valve Failure
UO" Outdoor Unit: Low Pressure Drop Due to Refrigerant
Outdoor Unit: Reverse Phase, Open Phase
U1" Outdoor Unit: Reverse Phase, Open Phase
Outdoor Unit: Power Supply Insufficient or Instantaneous Failure
Instantaneous Failure
U3" Outdoor Unit: Check Operation Not Executed
Check Operation Not Executed
Malfunction of Transmission between Indoor Units
U4" Malfunction of Transmission between Indoor Units
Remote Controller and Indoor Unit
U5" Indoor Unit: Malfunction of Transmission between
Outdoor Units
U7" Indoor Unit: Malfunction of Transmission between
MAIN and SUB Remote Controllers
U8" Indoor Unit: Malfunction of Transmission between
2.50 " U9 " Indoor Units
Indoor Units and Outdoor Units in the same System
UA" Improper Combination of Indoor Units and
UA" Improper Combination of Indoor Units and Outdoor Units/Indoor Units and Remote Controller
Address Duplication of Centralized Remote Controller
UC" Address Duplication of Centralized Remote Controller
Malfunction of Transmission between Centralized Controller and Indoor Unit
Indoor Unit
System Is Not Set yet
UF" System Is Not Set yet
Malfunction of System, Refrigerant System Address Undefined
Refrigerant System Address Undefined
Troubleshooting (OP: Central Remote Controller)
PC Board Defect
M1" PC Board Defect
Malfunction of Transmission between Optional Controllers for Centralized Control
Centralized Control
Improper Combination of Optional Controllers for Centralized Control
MA" Improper Combination of Optional Controllers for Centralized Control
Address Duplication, Improper Setting
MC" Address Duplication, Improper Setting
Troubleshooting (OP: Schedule Timer)
Malfunction of Transmission between Centralized Controller and Indoor Unit
UE" Malfunction of Transmission between Centralized Controller and Indoor Unit
PC Board Defect
M1" PC Board Defect
Malfunction of Transmission between Optional Controllers for Centralized Control
Centralized Control
Improper Combination of Optional Controllerslers for Centralized Controllers
MA" Improper Combination of Optional Controllers for Centralized Control
Address Duplication, Improper Setting
MC" Address Duplication, Improper Setting
Troubleshooting (OP: Unified ON/OFF Controller)
Operation Lamp Blinks
Display "Under Centralized Control" Blinks (Repeats Single Blink)
Display "Under Centralized Control" Blinks (Repeats Double Blink)
Part 7 Replacement Procedure for INV Compressor
Vrv (Reyq72M, 96M)
Replacement Procedure for INV Compressor, VRV (REYQ72M, 96M)
Replacement Procedure
Part 8 Appendix
Piping Diagrams
Outdoor Unit
Indoor Unit
BS Unit
Wiring Diagrams for Reference
Outdoor Unit
Field Wiring
Indoor Unit
BS Unit
List of Electrical and Functional Parts
Outdoor Unit
Indoor Side
Option List
Option List of Controllers
Option Lists (Outdoor Unit)
Example of Connection (R-410A Type)
Heat Recovery System
Example of Connection
Thermistor Resistance / Temperature Characteristics
Pressure Sensor
Method of Replacing the Inverter's Power Transistors and Diode Modules
Diode Modules
Part 9 Precautions for New Refrigerant (R-410A)
Precautions for New Refrigerant (R-410A)
Outline
Service Tools
Index
M8" Malfunction of Transmission between Optional Controllers for Centralized Control
Drawings & Flow Charts
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SiUS39 - 602
REYQ72, 96, 144, 168, 192MTJU
R-410A Heat Recovery 60Hz
REYQ72MTJU
REYQ96MTJU
REYQ144MTJU
REYQ168MTJU
REYQ192MTJU
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Table of Contents
Troubleshooting
Part 6 Troubleshooting
122
Troubleshooting by Remote Controller
125
malfunction code indication by outdoor unit pcb
136
Troubleshooting by Indication on the Remote Controller
138
Troubleshooting (OP: Central Remote Controller)
205
Troubleshooting (OP: Schedule Timer)
210
Troubleshooting (OP: Unified ON/OFF Controller)
217
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Reyq96
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