Daikin RWEQ120TA Manuals

Manuals and User Guides for Daikin RWEQ120TA. We have 1 Daikin RWEQ120TA manual available for free PDF download: Service Manual

Daikin RWEQ120TA Service Manual (506 pages)

VRV Water Cooled System

Brand: Daikin | Category: Heat Pump | Size: 18 MB

Caution Items
9
Warnings and Cautions Regarding Safety of Workers
9
Warnings and Cautions Regarding Safety of Users
11
Icons Used
14
Revision History
15
Table of Contents
16
Features and Benefits
17
Model Names
18
Outside Units
18
Branch Selector Unit
18
Indoor Unit
19
Air Treatment Equipment
19
External Appearance
20
Outside Units
20
Branch Selector Unit
21
Indoor Unit
22
Air Treatment Equipment
23
Combination of Outside Units
24
Capacity Range
25
Connection Ratio
25
Indoor Unit Connection Capacity
26
Limitation of Capacity Index for Heat Recovery
28
Specifications
29
Rweq-Tatju, Rweq-Tatja, Rweq-Tbtja
29
Part 1 General Information
31
Rweq-Taydu, Rweq-Tayda, Rweq-Tbyda
45
Rweq-Taycu, Rweq-Tbycu
61
Refrigerant Circuit Part
78
Refrigerant Circuit (Piping Diagrams)
78
Outside Unit
78
Branch Selector Unit
81
Indoor Unit
93
Outdoor-Air Processing Unit
96
Functional Parts Layout
97
Front View
97
Right View
98
Refrigerant Flow for each Operation Mode
99
In Case of Heat Pump Connection
99
Oil Return Operation
101
In Case of Heat Recovery Connection (Single Outside Unit Installation)
102
Applicable Models
108
Names and Functions
109
Brc1E73
109
Service Check Function
111
Part 3 Remote Controller
111
Brc1H71W
112
Button Locations and Descriptions
112
Overview of Screens
113
Information Screen
118
Wireless Remote Controller
120
Main/Sub Setting
121
Brc1E73
121
Field Settings
121
Brc1H71W
123
When Wireless Remote Controller Is Used Together
125
Address Setting for Wireless Remote Controller
126
Centralized Control Group No. Setting
128
Brc1E73
128
Brc1H71W
130
Wireless Remote Controller
130
Group No. Setting Example
131
Service Settings Menu, Maintenance Menu
132
Brc1E73
132
Service Settings Menu
133
Maintenance Menu
134
Administrator Menu, Installer Menu
136
Brc1H71W
136
Function General
139
Operation Mode
139
Normal Operation
140
Stop Control
141
When System Is in Stop Control
141
Stop Control of Slave Units While Master Unit Is in Operation on Multi Outside Unit System
142
Abnormal Stop
143
Standby Control
144
Restart Standby
144
Crankcase Heater Control
144
Startup Control
145
Startup Control in Cooling
145
Startup Control in Heating
145
Normal Control
146
Compressor PI Control
146
Cooling Operation
147
Heating Operation
148
Injection Control
149
Compressor Operation Frequency Steps
150
Electronic Expansion Valve Control
153
Heat Exchange Mode in Heating Operation or Simultaneous Cooling/Heating Operation
154
Protection Control
157
High Pressure Protection Control
157
Low Pressure Protection Control
160
Discharge Pipe Protection Control
163
Suction Pipe Protection Control
164
Inverter Protection Control
165
Cooling Fan Control
167
Special Control
168
Oil Return Control
168
Oil Return Control of Water Heat Exchanger
172
Pump down Residual Control
172
Refrigerant Drift Prevention
174
Other Control
175
Outside Unit Rotation
175
Exhaust Heat Cancellation Operation
176
Water Quantity Control
177
Backup Operation
180
Demand Operation
180
Outline of Control (Indoor Unit)
181
Operation Flowchart
181
Set Temperature and Control Target Temperature
185
Remote Controller Thermistor
187
Thermostat Control
189
Dry Operation
189
Thermostat Control with Operation Mode Set to AUTO
191
Drain Pump Control
192
Control of Electronic Expansion Valve
194
Freeze-Up Prevention Control
195
List of Swing Flap Operations
197
Hot Start Control (in Heating Operation Only)
198
Louver Control for Preventing Ceiling Dirt
199
Heater Control (Except FXTQ-TA, FXTQ-TB Models)
200
Overload Control
200
Heater Control (FXTQ-TA, FXTQ-TB Models)
201
3-Step Thermostat Processing (FXTQ-TA, FXTQ-TB Models)
204
Fan Control (Heater Residual) (FXTQ-TA, FXTQ-TB Models)
205
Interlocked with External Equipment (FXTQ-TA, FXTQ-TB Models)
205
Field Settings with Remote Controller
208
Wired Remote Controller
208
Wireless Remote Controller
213
Simplified Remote Controller
214
List of Field Settings for Indoor Unit
215
Applicable Field Settings
217
Details of Field Settings for Indoor Unit
221
Setting Procedure
227
External ON/OFF Input
229
Factory Setting
229
Auto Restart after Power Failure
230
Airflow Direction Setting
232
Room Temperature Display
238
List of Field Settings for Outdoor-Air Processing Unit
240
Operation Control Mode
240
Field Setting from Outside Unit
242
DIP Switch Settings
242
Accessing the BS Buttons on the PCB
245
Operating the BS Buttons and DIP Switches on the PCB
246
Access Mode
247
Connecting of the Optional PC Configurator Cable to the Outside Unit
249
Monitoring Function and Field Settings
249
Detailed Explanation of Setting Modes
262
Cool/Heat Mode Changeover
269
Heat Pump System
276
Heat Recovery System
276
Tightening Torque
277
Operation State
278
Operation Procedure
279
Field Settings for Branch Selector Unit
280
Field Settings for Single Branch Selector Unit
280
Field Settings for Multi Branch Selector Unit (Standard Series)
281
Field Settings for Multi Branch Selector Unit (Flex Series)
282
How to Check Miswiring for Multi Branch Selector Unit
284
Test Operation
285
Procedure and Outline
285
Check Work Prior to Turn Power Supply on
285
Turn Power on
286
Check Operation
287
Error Code
289
Symptom-Based Troubleshooting
293
Indoor Unit Overall
293
With Infrared Presence/Floor Sensor
296
Error Code Via Remote Controller
297
Brc1E73
297
Brc1H71W
298
Wireless Remote Controller
298
Troubleshooting by Error Code
300
Error Codes and Descriptions
300
Error Codes (Sub Codes)
302
Troubleshooting
302
External Protection Device Abnormality
310
Applicable Models
310
Indoor Unit Control PCB Abnormality
312
Drain Level Control System Abnormality
313
Indoor Fan Motor Lock, Overload
315
Indoor Fan Motor Abnormality
317
Overload/Overcurrent/Lock of Indoor Fan Motor
323
Blower Motor Not Running
324
Error Reset
324
Indoor Fan Motor Status Abnormality
325
Low Indoor Airflow
326
Swing Flap Motor Abnormality
327
Power Supply Voltage Abnormality
329
Blower Motor Stops for Over/Under Voltage
330
Electronic Expansion Valve Coil Abnormality, Dust Clogging
331
Drain Level above Limit
332
Self-Cleaning Decoration Panel Abnormality
333
Defective Capacity Setting
344
Transmission Abnormality between Indoor Unit Control PCB and Fan PCB
345
Applicable Models
345
Blower Motor Communication Error
347
Thermistor Abnormality
348
Combination Error between Indoor Unit Control PCB and Fan PCB
349
Capacity Setting Abnormality
350
Blower Motor HP Mismatch
351
Indoor Blower Does Not Have Required Parameters to Function
352
Remote Sensor Abnormality
353
Humidity Sensor System Abnormality
354
Infrared Presence/Floor Sensor Error
355
Diagnosis Procedure
356
Remote Controller Thermistor Abnormality
360
Outside Unit PCB Abnormality
361
Detection of Ground Leakage by Leak Detection Circuit
362
Missing of Ground Leakage Detection Core
363
Activation of High Pressure Switch
364
Activation of Low Pressure Sensor
366
Compressor Motor Lock
367
Electronic Expansion Valve Coil Abnormality
369
Discharge Pipe Temperature Abnormality
370
Suction Pipe Temperature Abnormality
372
Refrigerant Overcharged
374
Branch Selector Unit Electronic Expansion Valve Abnormality
376
Harness Abnormality (between Outside Unit Main PCB and Inverter PCB)
378
Applicable Models
378
Thermistor System Abnormality
379
Water System Abnormality
381
High Pressure Sensor Abnormality
383
Low Pressure Sensor Abnormality
384
Inverter PCB Abnormality
385
Reactor Temperature Rise Abnormality
386
Inverter Radiation Fin Temperature Rise Abnormality
387
Compressor Instantaneous Overcurrent
388
Compressor Overcurrent
390
Compressor Startup Abnormality
392
Transmission Error between Inverter PCB and Outside Unit Main PCB
394
Power Supply Voltage Imbalance
396
Reactor Temperature Abnormality
398
Inverter Radiation Fin Temperature Abnormality
399
Field Setting Abnormality after Replacing Outside Unit Main PCB or Combination of PCB Abnormality
400
Refrigerant Shortage Alert
401
Reverse Phase, Open Phase
402
Power Supply Insufficient or Instantaneous Failure
403
Check Operation Not Executed
405
Transmission Error between Indoor Units and Outside Units, Open Phase in Power Supply Wiring
406
Transmission Error between Remote Controller and Indoor Unit
409
Transmission Error between Outside Units
410
Transmission Error between Main and Sub Remote Controllers
416
Transmission Error between Indoor and Outside Units in the same System
417
Improper Combination of Indoor, Branch Selector and Outside Units
418
Incorrect Electric Heater Capacity Setting
427
Address Duplication of Centralized Controller
428
Transmission Error between Centralized Controller and Indoor Unit
429
System Not Set yet
432
System Abnormality, Refrigerant System Address Undefined
433
Check
435
High Pressure Check
435
Low Pressure Check
437
Superheat Operation Check
439
Power Transistor Check
441
Wet Operation Check
442
Refrigerant Overcharge Check
444
Refrigerant Shortage Check
445
Vacuuming and Dehydration Procedure
446
Thermistor Check
447
Pressure Sensor Check
450
Broken Wire Check of the Relay Wires
451
Fan Motor Connector Check (Power Supply Cable)
453
Fan Motor Connector Check (Signal Cable)
454
Electronic Expansion Valve Coil Check
456
Fan Motor Connector Check for FXTQ-TA, FXTQ-TB
460
High Voltage
460
Motor Checks
463
Wiring Diagrams
465
Outside Unit
465
Branch Selector Unit
471
Indoor Unit
480
Air Treatment Equipment
503

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