Daikin VRV RELQ72-240TAYDU Manuals

Manuals and User Guides for Daikin VRV RELQ72-240TAYDU. We have 1 Daikin VRV RELQ72-240TAYDU manual available for free PDF download: Service Manual

Daikin VRV RELQ72-240TAYDU Service Manual (345 pages)

Brand: Daikin | Category: Heat Pump | Size: 8 MB

Warnings and Cautions Regarding Safety of Workers
8
Warnings and Cautions Regarding Safety of Users
10
Used Icons
13
Table of Contents
14
Model Names
15
Indoor Unit
15
Outdoor Unit
15
Air Treatment Equipment
16
Branch Selector Unit
17
External Appearance
18
Indoor Unit
18
Outdoor Unit
19
Air Treatment Equipment
20
Branch Selector Unit
20
Combination of Outdoor Units
21
Relq-Tatju, Relq-Taydu, Relq-Taycu
21
Reyq-Taycu
21
Capacity Range
22
Combination Ratio
22
Outdoor Unit Combinations
23
Limitation of Capacity Index for Heat Recovery
24
Refrigerant Circuit Part
26
Refrigerant Circuit
26
Outdoor Unit
26
Indoor Unit
29
Outdoor-Air Processing Unit
31
Branch Selector Unit
32
Functional Parts Layout
38
Relq72Tatju, Relq72Taydu, Relq72Taycu, Reyq72-120Taycu
38
Front View
38
Relq96/120Tatju, Relq96/120Taydu, Relq96/120Taycu, Reyq144/168Taycu
40
Refrigerant Flow for each Operation Mode
42
Cooling Operation
42
Heating Operation
43
Simultaneous Cooling and Heating Operation
44
Cooling Oil Return Operation
45
Defrost Heating Oil Return Operation
46
Oil Return Operation at Simultaneous Cooling and Heating Operation
47
Applicable Models
49
Names and Functions
50
Brc1E73
50
Wireless Remote Controller
53
MAIN/SUB Setting
54
Brc1E73
54
Wireless Remote Controller
55
Centralized Control Group No. Setting
56
Brc1E73
56
Wireless Remote Controller
58
Group No. Setting Example
59
Service Mode
60
Brc1E73
60
Operation Flowchart (Outdoor Unit)
64
Stop Control
65
Stop Due to Error
65
When System Is in Stop Mode
65
Slave Unit Stops During Master Unit Operation
65
Standby Control
66
Restart Standby
66
Crankcase Heater Control
66
Startup Control
67
Startup Control in Cooling
67
Startup Control in Heating
68
Basic Control
69
Normal Operation
69
Compressor PI Control
70
Cooling Operation
70
Operating Priority and Rotation of Compressors
70
Compressor Step Control
72
Single Unit Installation
72
Electronic Expansion Valve PI Control
74
Step Control of Outdoor Fans
75
Heat Exchanger Control
76
Protection Control
77
High Pressure Protection Control
77
Low Pressure Protection Control
79
Discharge Pipe Protection Control
80
Compressor Body Protection Control
81
Inverter Protection Control
81
Special Control
83
Pump down Residual Operation
83
Oil Return Operation
84
Starting Conditions
84
Defrost Operation
87
Outdoor Unit Rotation
88
Cooling/Heating Mode Switching
89
Other Control
93
Backup Operation
93
Demand Operation
93
Heating Operation Prohibition
93
Outline of Control (Indoor Unit)
94
Operation Flowchart
94
Set Temperature and Control Temperature
96
With Optional Infrared Presence/Floor Sensor
97
Remote Controller Thermistor
98
Thermostat Control
100
Dry Operation
101
Drain Pump Control
103
Control of Electronic Expansion Valve
105
Freeze-Up Prevention
106
List of Swing Flap Operations
108
Hot Start Control (in Heating Only)
109
Louver Control for Preventing Ceiling Dirt
110
Heater Control (Except FXTQ-TA Models)
111
Normal Control
111
Overload Control
111
Heater Control (FXTQ-TA Models)
112
Step Thermostat Processing (FXTQ-TA Models)
115
Fan Control (Heater Residual) (FXTQ-TA Models)
116
Interlocked with External Equipment (FXTQ-TA Models)
116
Operation
117
Field Settings from Remote Controller
119
Wired Remote Controller
119
Wireless Remote Controller
121
Simplified Remote Controller
122
List of Field Settings for Indoor Unit
123
Details of Field Settings for Indoor Unit
126
External ON/OFF Input
132
List of Field Settings for Outdoor-Air Processing Unit
139
Setting of Operation Control Mode
139
Field Setting from Outdoor Unit
141
DIP Switch Setting Mounting a Spare PCB
141
Accessing the BS Buttons on the Logic Board
143
Operating the BS Buttons and DIP Switches on the Logic Board
144
Connecting of the Optional PC Configurator Cable to the Outdoor Unit
146
Monitoring Function and Field Settings
147
Cool / Heat Mode Changeover
157
Setting of Night-Time Low Noise Operation and Demand Operation
158
Image of Operation in the Case of a and B
159
Setting Mode 2 (H1P ON)
162
Test Operation
163
Checks before Test Operation
163
Checkpoints
163
Symptom-Based Troubleshooting
167
Indoor Unit Overall
167
With Optional Infrared Presence/Floor Sensor
170
Wired Remote Controller
171
Taking Corrective Action
171
Wireless Remote Controller
172
"DOWN" Button
172
Error Codes and Descriptions
174
Error Codes - Sub Codes
176
Troubleshooting by Error Code
189
External Protection Device Abnormality
189
Troubleshooting
190
Indoor Unit PCB Abnormality
191
Drain Level Control System Abnormality
192
Indoor Fan Motor Lock, Overload
194
Indoor Fan Motor Abnormality
197
Overload/Overcurrent/Lock of Indoor Fan Motor
201
Blower Motor Not Running
202
Indoor Fan Motor Status Abnormality
203
Low Indoor Airflow
204
Swing Flap Motor Abnormality
205
Power Supply Voltage Abnormality
207
Blower Motor Stops for Over/Under Voltage
208
Electronic Expansion Valve Coil Abnormality, Dust Clogging
209
Drain Level above Limit
210
Capacity Determination Device Abnormality
211
Transmission Abnormality between Indoor Unit PCB and Fan PCB
212
Blower Motor Communication Error
214
Thermistor Abnormality
215
Combination Error between Indoor Unit PCB and Fan PCB
216
Blower Motor HP Mismatch
217
Indoor Blower Does Not Have Required Parameters to Function
218
Remote Sensor Abnormality
219
Humidity Sensor System Abnormality
220
Infrared Presence/Floor Sensor Error
221
Remote Controller Thermistor Abnormality
226
Outdoor Unit PCB Abnormality
227
Detection of Ground Leakage by Leak Detection Circuit
228
Missing of Ground Leakage Detection Core
229
Actuation of High Pressure Switch
230
Actuation of Low Pressure Sensor
232
Inverter Compressor Motor Lock
233
Troubleshooting by Error Code
234
Compressor Damage Alarm
235
Outdoor Fan Motor Abnormality
237
Electronic Expansion Valve Coil Abnormality
241
Discharge Pipe Temperature Abnormality
242
Wet Alarm
244
Refrigerant Overcharged
245
BS Unit Electronic Expansion Valve Abnormality
246
Harness Abnormality (between Outdoor Unit Main PCB and Inverter PCB)
247
Outdoor Fan Motor Signal Abnormality
248
Outdoor Fan PCB Abnormality
249
Thermistor Abnormality
250
High Pressure Sensor Abnormality
252
Low Pressure Sensor Abnormality
253
Inverter PCB Abnormality
254
Troubleshooting by Error Code
255
Momentary Power Failure During Test Operation
256
Reactor Temperature Rise Abnormality
257
Inverter Radiation Fin Temperature Rise Abnormality
258
Inverter Compressor Instantaneous Overcurrent
261
Inverter Compressor Overcurrent
263
Inverter Compressor Startup Abnormality
265
Transmission Error between Inverter PCB and Outdoor Unit Main PCB
267
Error Code
267
Power Supply Voltage Imbalance
269
Reactor Surface Thermistor Abnormality
271
Inverter Radiation Fin Temperature Abnormality
272
Field Setting after Replacing Outdoor Unit Main PCB Abnormality or Combination of PCB Abnormality
274
Refrigerant Shortage
275
Reverse Phase, Open Phase
276
Power Supply Insufficient or Instantaneous Abnormality
278
Check Operation Not Executed
280
Transmission Error between Indoor Units and Outdoor Units
281
Transmission Error between Remote Controller and Indoor Unit
284
Transmission Error between Outdoor Units
285
Transmission Error between Main and Sub Remote Controllers
291
Transmission Error between Indoor and Outdoor Units in the same System
292
Improper Combination of Indoor and Outdoor Units, Indoor Units and Remote Controller
293
Incorrect Electric Heater Capacity Setting
297
Address Duplication of Centralized Control Equipment
298
Transmission Error between Centralized Control Equipment and Indoor Unit
299
System Not Set yet
301
System Abnormality, Refrigerant System Address Undefined
302
Check
304
High Pressure Check
304
Low Pressure Check
305
Superheat Operation Check
306
Power Transistor Check
307
Refrigerant Overcharge Check
312
Refrigerant Shortage Check
313
Vacuuming and Dehydration Procedure
314
Thermistor Check
315
Pressure Sensor Check
318
Broken Wire Check of the Relay Wires
319
Fan Motor Connector Check (Power Supply Cable)
320
Fan Motor Connector Check (Signal Cable)
320
Electronic Expansion Valve Coil Check
321
Wiring Diagrams
324
Outdoor Unit
324
Indoor Unit
329
Air Treatment Equipment
337
Outdoor-Air Processing Unit
337
Branch Selector Unit
340
Revision History
344

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Daikin VRV RELQ72-240TAYDU Service Manual (345 pages)

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