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Daikin
Air Conditioner
RXYQ72
Daikin RXYQ72 User Manual
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SiUS39-601
Specifications
5
Part 2
Specifications
1.
Specifications
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6
1.1
Outdoor Units
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6
1.2
Indoor Units
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11
15
17
Table of Contents
Default Chapter
2
Table of Contents
2
Introduction
7
Safety Cautions
7
Caution in Repair
7
Cautions Regarding Products after Repair
8
Inspection after Repair
9
Using Icons
10
Using Icons List
10
Preface
11
Part 1 General Information
12
Model Names of Indoor/Outdoor Units
13
External Appearance
14
Indoor Units
14
Outdoor Units
14
Model Selection
15
Part 2 Specifications
16
Specifications
17
Outdoor Units
17
Indoor Units
22
Ceiling Suspended Type
29
Wall Mounted Type
30
Floor Standing Type
32
Part 3 Refrigerant Circuit
34
Refrigerant Circuit
35
Rxyq72M, 96M
35
Refrigerant Circuit Part
35
Functional Parts Layout
37
Rxyq72M, 96M
37
Refrigerant Flow for each Operation Mode
38
Heating Operation
41
Part 4 Function
42
Operation Mode
43
Basic Control
44
Normal Operation
44
Compressor PI Control
45
Electronic Expansion Valve PI Control
49
Cooling Operation Fan Control
50
Special Control
51
Startup Control
51
Oil Return Operation
52
Defrosting Operation
54
Pump-Down Residual Operation
55
Restart Standby
56
Stopping Operation
57
Pressure Equalization Prior to Startup
59
Protection Control
60
High Pressure Protection Control
60
Low Pressure Protection Control
61
Discharge Pipe Protection Control
62
Inverter Protection Control
63
STD Compressor Overload Protection
64
Other Control
65
Outdoor Unit Rotation
65
Emergency Operation
66
Demand Operation
68
Heating Operation Prohibition
68
Outline of Control (Indoor Unit)
69
Drain Pump Control
69
Thermostat Sensor in Remote Controller
71
Freeze Prevention
73
Part 5 Test Operation
74
Test Operation
75
Procedure and Outline
75
Check Operation
76
Operation When Power Is Turned on
78
Outdoor Unit PC Board Layout
79
Field Setting
80
Field Setting from Remote Controller
80
Simplified Remote Controller
82
Detailed Explanation of Setting Modes
84
Contents of Control Modes
90
Field Setting from Outdoor Unit
92
Setting of Demand Operation
107
Test Operation
108
Image of Operation in the Case of a
108
Image of Operation in the Case of B
108
Additional Refrigerant Charge Total Flow
111
Part 6 Troubleshooting
116
CJ" Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller
116
Troubleshooting by Remote Controller
119
The INSPECTION / TEST Button
119
Self-Diagnosis by Wired Remote Controller
120
Self-Diagnosis by Wireless Remote Controller
121
Operation of the Remote Controller's Inspection / Test Operation Button
123
Remote Controller Service Mode
124
Remote Controller Self-Diagnosis Function
126
Malfunction Code Indication by Outdoor Unit Pcb
129
Troubleshooting by Indication on the Remote Controller
131
A0" Indoor Unit: Error of External Protection Device
131
A1" Indoor Unit: PC Board Defect
132
PC Board Defect
132
A3" Indoor Unit: Malfunction of Drain Level Control System (S1L)
133
Troubleshooting
134
A6" Indoor Unit: Fan Motor (M1F) Lock, Overload
135
Malfunction of Swing Flap Motor (MA)
136
A7" Indoor Unit: Malfunction of Swing Flap Motor (MA)
136
A9" Indoor Unit: Malfunction of Moving Part of
138
Electronic Expansion Valve (20E)
138
AF" Indoor Unit: Drain Level above Limit
140
AJ" Indoor Unit: Malfunction of Capacity Determination Device
141
C4" Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger
142
C5" Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes
143
C9" Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air
144
CJ" Indoor Unit: Malfunction of Thermostat Sensor in
145
In Remote Controller
145
Remote Controller
145
E1" Outdoor Unit: PC Board Defect
146
Actuation of High Pressure Switch
147
E3" Outdoor Unit: Actuation of High Pressure Switch
147
Actuation of Low Pressure Sensor
148
E4" Outdoor Unit: Actuation of Low Pressure Sensor
148
Compressor Motor Lock
150
E5" Compressor Motor Lock
150
Compressor Motor Overcurrent/Lock
152
E6" Compressor Motor Overcurrent/Lock
152
Malfunction of Outdoor Unit Fan Motor
153
E7" Malfunction of Outdoor Unit Fan Motor
153
E9" Outdoor Unit: Malfunction of Moving Part of
155
Of Electronic Expansion Valve (Y1E, Y2E)
155
Electronic Expansion Valve (Y1E, Y2E)
155
F3" Outdoor Unit: Abnormal Discharge Pipe Temperature
157
Abnormal Discharge Pipe Temperature
157
Refrigerant Overcharged
158
F6" Refrigerant Overcharged
158
H7" Abnormal Outdoor Fan Motor Signal
159
2.23 "H9" Outdoor Unit
161
H9" Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air
161
J2" Current Sensor Malfunction
162
2.25 "J3" Outdoor Unit
163
J3" Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R31~33T)
163
2.26 "J5" Outdoor Unit
164
J5" Outdoor Unit: Malfunction of Thermistor (R2T) for Suction Pipe
164
Malfunction of Thermistor (R2T) for
164
J6" Outdoor Unit: Malfunction of Thermistor (R4T) for
165
J7" Malfunction of Receiver Outlet Liquid Pipe
166
Thermistor (R6T)
166
J8"Malfunction of Oil Equalizing Pipe Thermistor (R7T)
167
Malfunction of Sub-Cooling Gas Pipe Thermistor (R5T)
168
J9" Malfunction of Sub-Cooling Gas Pipe Thermistor (R5T)
168
2.31 "JA" Outdoor Unit
169
Malfunction of Discharge Pipe Pressure Sensor
169
JA" Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor
169
JC" Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor
171
Malfunction of Suction Pipe Pressure Sensor
171
2.33 "L4" Outdoor Unit
172
L4" Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise
172
L5" Outdoor Unit: Inverter Compressor Abnormal
173
Inverter Compressor Abnormal
173
L8" Outdoor Unit: Inverter Current Abnormal
174
L9" Outdoor Unit: Inverter Start up Error
176
Inverter Start up Error
176
2.37 "LC" Outdoor Unit
177
LC" Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board
177
P1" Outdoor Unit: Inverter Over-Ripple Protection
179
Inverter Over-Ripple Protection
179
2.39 "P4" Outdoor Unit
181
P4" Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor
181
PC Board or Faulty Combination of PC Board
182
PJ" Outdoor Unit: Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board
182
2.41 "UO" Outdoor Unit
183
UO" Outdoor Unit: Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure
183
U1" Outdoor Unit: Reverse Phase, Open Phase
185
Reverse Phase, Open Phase
185
2.43 "U2" Outdoor Unit
186
Or Instantaneous Failure
186
U2" Outdoor Unit: Power Supply Insufficient or Instantaneous Failure
186
U3" Outdoor Unit: Check Operation Not Executed
188
Check Operation Not Executed
188
U4" Malfunction of Transmission between Indoor Units
189
And Outdoor Units
189
U5" Indoor Unit: Malfunction of Transmission between
191
Remote Controller and Indoor Unit
191
Between Outdoor Units
192
U7" Indoor Unit: Malfunction of Transmission
192
U7" Indoor Unit: Malfunction of Transmission between Outdoor Units
192
2.48 "U8" Indoor Unit
194
Malfunction of Transmission between Main and Sub Remote Controllers
194
U8" Indoor Unit: Malfunction of Transmission between Main and Sub Remote Controllers
194
U9" Indoor Unit: Malfunction of Transmission between Indoor Units and Outdoor Units in the same System
195
UA" Improper Combination of Indoor Units
197
UA" Improper Combination of Indoor Units and
197
And Outdoor Units/Indoor Units and Remote Controller
197
Outdoor Units/Indoor Units and Remote Controller
197
UC" Address Duplication of Central Remote Controller
199
UE" Malfunction of Transmission between Centralized Controller and Indoor Unit
200
UF" System Is Not Set yet
202
UH" Malfunction of System, Refrigerant System Address Undefined
203
Troubleshooting (OP: Central Remote Controller)
205
PC Board Defect
205
M1" PC Board Defect
205
M8" Malfunction of Transmission between Optional Controllers for Centralized Control
206
Improper Combination of Optional Controllerslers for Centralized Controllers
208
MA" Improper Combination of Optional Controllers for Centralized Control
208
MC" Address Duplication, Improper Setting
210
Troubleshooting (OP: Schedule Timer)
211
UE" Malfunction of Transmission between Central Remote Controller
211
UE" Malfunction of Transmission between Central Remote Controller and Indoor Unit
211
PC Board Defect
213
M1" PC Board Defect
213
M8" Malfunction of Transmission between Optional Controllers for Centralized Control
214
Improper Combination of Optional Controllerslers for Centralized Controllers
216
MA" Improper Combination of Optional Controllers for Centralized Control
216
MC" Address Duplication, Improper Setting
218
Troubleshooting (OP: Unified ON/OFF Controller)
219
Operation Lamp Blinks
219
Display "Under Centralized Control" Blinks (Repeats Single Blink)
221
Display "Under Centralized Control" Blinks (Repeats Double Blink)
224
Part 7 Replacement Procedure for INV Compressor, VRV
228
Replacement Procedure for INV Compressor, VRV (RXYQ72M, 96M)
229
Replacement Procedure
229
Part 8 Appendix
230
Piping Diagrams
231
Outdoor Unit
231
Indoor Unit
232
Wiring Diagrams for Reference
234
Outdoor Unit
234
Field Wiring
235
Indoor Unit
237
List of Electrical and Functional Parts
241
Outdoor Unit
241
Indoor Side
242
Option List
246
Option List of Controllers
246
Option Lists (Outdoor Unit)
247
Example of Connection
248
Thermistor Resistance / Temperature Characteristics
250
Discharge Pipe
251
Pressure Sensor
252
Method of Replacing the Inverter's Power Transistors and Diode Modules
253
Part 9 Precautions for New Refrigerant (R-410A)
256
Precautions for New Refrigerant (R-410A)
257
Outline
257
Service Tools
259
Index
266
Malfunction of Capacity Determination Device
267
Malfunction of Thermistor (R2T) for Heat Exchanger
267
Drawings & Flow Charts
270
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Daikin RXYQ72 Specifications
General
Brand
Daikin
Model
RXYQ72
Category
Air Conditioner
Language
English
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