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REYQ72-456XATJU
Daikin REYQ72-456XATJU User Manual
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Se
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Manual
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REY
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SiUS371901EB
2
Table of Contents
Default Chapter
2
Table of Contents
2
Introduction
8
Safety Cautions
9
Warnings and Cautions Regarding Safety of Workers
9
Warnings and Cautions Regarding Safety of Users
11
Icons Used
14
Revision History
15
Part 1 General Information
16
Model Names
17
Indoor Unit
17
Outdoor Unit
18
Air Treatment Equipment
19
Branch Selector Unit
19
External Appearance
20
Indoor Unit
20
Outdoor Unit
21
Air Treatment Equipment
22
Branch Selector Unit
22
Combination of Outdoor Units
23
Reyq-Xatju(A), Reyq-Xaydu(A), Reyq-Xaycu(A)
23
Capacity Range
24
Combination Ratio
24
Outdoor Unit Combinations
25
Limitation of Capacity Index for Heat Recovery
26
Specifications
27
Reyq-Xatju(A)
27
Reyq-Xaydu(A)
44
Reyq-Xaycu(A)
61
Part 2 Refrigerant Circuit
77
Refrigerant Circuit (Piping Diagrams)
78
Outdoor Unit
78
Refrigerant Circuit Part
78
Indoor Unit
82
Outdoor-Air Processing Unit
84
Branch Selector Unit
85
Functional Parts Layout
94
Reyq72/96/120Xatju(A), Reyq72/96/120Xaydu(A), Reyq72/96/120Xaycu(A)
94
Reyq144/168Xatju(A), Reyq144/168Xaydu(A), Reyq144/168Xaycu(A)
96
Refrigerant Flow for each Operation Mode
98
Cooling Operation
98
Heating Operation
99
Simultaneous Cooling and Heating Operation
100
Cooling Oil Return Operation
101
Defrost Heating Oil Return Operation
102
Oil Return Operation at Simultaneous Cooling and Heating Operation
103
Part 3 Remote Controller
104
Applicable Models
105
Names and Functions
106
Brc1E73
106
Brc1H71W
109
Wireless Remote Controller
117
Main/Sub Setting
118
Brc1E73
118
Brc1H71W
120
When Wireless Remote Controller Is Used Together
122
Address Setting for Wireless Remote Controller
123
Centralized Control Group No. Setting
125
Brc1E73
125
Brc1H71W
127
Wireless Remote Controller
127
Group No. Setting Example
128
Service Settings Menu, Maintenance Menu
129
Brc1E73
129
Administrator Menu, Installer Menu
133
Brc1H71W
133
Part 4 Functions and Control
134
Operation Flowchart
136
Outdoor Unit
136
Branch Selector Unit & Indoor Unit Operation Mode Detail
137
Stop Control
138
Stop Due to Error
138
When System Is in Stop Mode
138
Slave Unit Stops During Master Unit Operation
138
Standby Control
139
Restart Standby
139
Crankcase Heater Control
139
Startup Control
140
Startup Control in Cooling
140
Startup Control in Heating
141
Basic Control
142
Normal Control
142
Compressor PI Control
143
Compressor Step Control
144
Electronic Expansion Valve PI Control
146
Step Control of Outdoor Fans
147
Heat Exchanger Control
148
Protection Control
149
High Pressure Protection Control
149
Low Pressure Protection Control
151
Discharge Pipe Protection Control
152
Compressor Body Protection Control
153
Inverter Protection Control
153
Special Control
155
Pump down Residual Operation
155
Oil Return Operation
156
Defrost Operation
159
Outdoor Unit Rotation
160
Cooling/Heating Mode Switching
161
Other Control
164
Backup Operation
164
Demand Operation
164
Heating Operation Prohibition
164
Outline of Control (Indoor Unit)
166
Operation Flowchart
166
Set Temperature and Control Target Temperature
170
Remote Controller Thermistor
172
Thermostat Control
174
Drain Pump Control
177
Control of Electronic Expansion Valve
179
Freeze-Up Prevention Control
180
List of Swing Flap Operations
182
Hot Start Control (in Heating Operation Only)
183
Louver Control for Preventing Ceiling Dirt
184
Heater Control (Except FXTQ-TA Models)
185
Heater Control (FXTQ-TA Models)
186
Gas Furnace Control (CXTQ-TA Models)
189
3-Step Thermostat Processing (FXTQ-TA Models)
190
Fan Control (Heater Residual) (FXTQ-TA Models)
191
Interlocked with External Equipment (FXTQ-TA and CXTQ-TA Models)
191
Part 5 Field Settings and Test Operation
193
Field Settings for Indoor Unit
194
Field Settings with Remote Controller
194
List of Field Settings for Indoor Unit
201
Applicable Field Settings
203
Details of Field Settings for Indoor Unit
207
Gas Furnace Set up
224
List of Field Settings for Outdoor-Air Processing Unit
226
Setting of Operation Control Mode
226
Field Setting from Outdoor Unit
228
DIP Switch Setting When Mounting a Spare PCB
229
Accessing the BS Buttons on the PCB
231
Operating the BS Buttons and DIP Switches on the PCB
232
Connecting the PC Configurator to the Outdoor Unit
235
Monitoring Function and Field Settings
236
Cool/Heat Mode Changeover
259
Night-Time Low Noise Operation and Demand Operation
260
Field Settings for Branch Selector Unit
265
Field Settings for Single Branch Selector Unit
265
Field Settings for Multi Branch Selector Unit (Standard Series)
266
Field Settings for Multi Branch Selector Unit (Flex Series)
267
How to Check Miswiring for Multi Branch Selector Unit
269
Test Operation
270
Checks before Test Operation
270
Checkpoints
270
Gas Furnace Test Operation
271
Part 6 Service Diagnosis
272
Symptom-Based Troubleshooting
275
Indoor Unit Overall
275
With Gas Furnace
278
Gas Furnace Lockout Reset
278
With Optional Infrared Presence/Floor Sensor
279
Troubleshooting with Remote Controller
280
Brc1E73
280
Brc1H71W
281
Wireless Remote Controller
281
Troubleshooting by Error Code
284
Error Codes and Descriptions
284
Error Codes (Sub Codes)
287
External Protection Device Abnormality
297
Indoor Unit Control PCB Abnormality
299
Drain Level Control System Abnormality
300
Indoor Fan Motor Lock, Overload
302
Indoor Fan Motor Abnormality
304
Overload/Overcurrent/Lock of Indoor Fan Motor
308
Blower Motor Not Running
309
Indoor Fan Motor Status Abnormality
310
Low Indoor Airflow
311
Swing Flap Motor Abnormality
312
Power Supply Voltage Abnormality
314
Blower Motor Stops for Over/Under Voltage
315
Electronic Expansion Valve Coil Abnormality, Dust Clogging
316
Gas Furnace Abnormality
317
Drain Level above Limit
318
Capacity Determination Device Abnormality
319
Transmission Abnormality between Indoor Unit Control PCB and Fan PCB
320
Blower Motor Communication Error
322
Climate Talk Communication Error
323
Thermistor Abnormality
324
Combination Error between Indoor Unit Control PCB and Fan PCB
325
Blower Motor HP Mismatch
326
Indoor Blower Does Not Have Required Parameters to Function
327
Remote Sensor Abnormality
328
Humidity Sensor System Abnormality
329
Infrared Presence/Floor Sensor Error
330
Remote Controller Thermistor Abnormality
335
Outdoor Unit Main PCB Abnormality
336
Detection of Ground Leakage by Leak Detection Circuit
337
Missing of Ground Leakage Detection Core
338
Activation of High Pressure Switch
339
Activation of Low Pressure Sensor
341
Compressor Motor Lock
343
Compressor Damage Alarm
345
Outdoor Fan Motor Abnormality
347
Electronic Expansion Valve Coil Abnormality
351
Discharge Pipe Temperature Abnormality
352
Wet Alarm
354
Refrigerant Overcharged
356
Branch Selector Unit Electronic Expansion Valve Abnormality
357
Harness Abnormality (between Outdoor Unit Main PCB and Inverter PCB)
359
Outdoor Fan Motor Signal Abnormality
360
Outdoor Fan PCB Abnormality
361
Thermistor Abnormality
362
High Pressure Sensor Abnormality
364
Low Pressure Sensor Abnormality
365
Inverter PCB Abnormality
366
Momentary Power Failure During Test Operation
368
Reactor Temperature Rise Abnormality
369
Inverter Radiation Fin Temperature Rise Abnormality
370
Compressor Instantaneous Overcurrent
373
Compressor Overcurrent
375
Compressor Startup Abnormality
377
Transmission Error between Inverter PCB and Outdoor Unit Main PCB
379
Power Supply Voltage Imbalance
381
Reactor Surface Thermistor Abnormality
383
Inverter Radiation Fin Temperature Abnormality
384
Field Setting after Replacing Outdoor Unit Main PCB Abnormality or Combination of PCB Abnormality
386
Refrigerant Shortage
387
Reverse Phase, Open Phase
388
Power Supply Insufficient or Instantaneous Abnormality
390
Check Operation Not Executed
392
Transmission Error between Indoor Units and Outdoor Units, Open Phase in Power Supply Wiring
393
Transmission Error between Remote Controller and Indoor Unit
396
Transmission Error between Outdoor Units
397
Transmission Error between Main and Sub Remote Controllers
403
Transmission Error between Indoor Units and Outdoor Units in the same System
404
Improper Combination of Indoor, Branch Selector and Outdoor Units
405
Incorrect Gas Furnace Connecting Number
412
Incorrect Electric Heater Capacity Setting
413
Address Duplication of Centralized Controller
414
Transmission Error between Centralized Controller and Indoor Unit
415
System Not Set yet
418
System Abnormality, Refrigerant System Address Undefined
419
Climate Talk Communication System Combination Error (before Initial Setting for Communication Completes)
421
Climate Talk Communication System Combination Error
421
Climate Talk Communication System Combination Error (after Initial Setting for Communication Completes)
422
Setting for Communication Completes)
422
Check
423
High Pressure Check
423
Low Pressure Check
424
Superheat Operation Check
426
Power Transistor Check
428
Refrigerant Overcharge Check
433
Refrigerant Shortage Check
434
Vacuuming and Dehydration Procedure
435
Thermistor Check
436
Pressure Sensor Check
439
Broken Wire Check of the Relay Wires
440
Fan Motor Connector Check (Power Supply Cable)
442
Fan Motor Connector Check (Signal Cable)
444
Electronic Expansion Valve Coil Check
446
Fan Motor Connector Check for FXTQ-TA
449
Part 7 Appendix
453
Wiring Diagrams
454
Outdoor Unit
454
Indoor Unit
459
Air Treatment Equipment
473
Branch Selector Unit
476
4
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Daikin REYQ72-456XATJU Specifications
General
Model
REYQ72-456XATJU
Category
Heating System
Refrigerant
R-410A
Type
VRV
Power Supply
380-415V/3Ph/50Hz
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