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PURY-P72
Mitsubishi Electric PURY-P72 User Manual
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Models
PUR
Y
-P72, P96, P120, P144T(Y)JMU-A
PUR
Y
-P168, P192, P216, P240, P264, P288T(Y)SJMU-A
2
Table of Contents
Default Chapter
2
Safety Precautions
2
Before Installing the Unit
5
Before the Test Run
7
III Outdoor Unit Components
8
IV Remote Controller
8
Read before Servicing
8
Table of Contents
8
V Electrical Wiring Diagram
8
VI Refrigerant Circuit
8
VII Control
8
VIII Test Run Mode
8
1 I Read before Servicing
12
I Read before Servicing
12
Necessary Tools and Materials
13
Piping Materials
14
Storage of Piping
16
Pipe Processing
16
Brazing
17
Air Tightness Test
18
Vacuum Drying (Evacuation)
19
Refrigerant Charging
21
Remedies to be Taken in Case of a Refrigerant Leak
21
Characteristics of the Conventional and the New Refrigerants
22
Notes on Refrigerating Machine Oil
23
Restrictions
24
2 II Restrictions
26
System Configuration
26
Types and Maximum Allowable Length of Cables
27
Switch Settings and Address Settings
28
M-NET Address Settings
29
Power Supply Switch Connector Connection on the Outdoor Unit
31
Settings for the Centralized Control Switch for the Outdoor Unit
31
Selecting the Position of Temperature Detection for the Indoor Unit
31
Various Start-Stop Controls (Indoor Unit Settings)
32
Various Types of Control Using Input-Output Signal Connector
32
Demand Control
34
Contact Input and Control Content
34
Sample System Connection
35
An Example of a System to Which an MA Remote Controller Is Connected
37
Group Operation of Units in a System with Multiple Outdoor Units
41
Address Setting Method
46
A System with Multiple BC Controller Connections
47
An Example of a System to Which an ME Remote Controller Is Connected
51
An Example of a System to Which both MA Remote Controller and ME Remote Controller Are Connected
53
Restrictions on Pipe Length
56
Refrigerant Pipe Size
62
Connecting the BC Controller
63
Size of the Pipe that Fits the Main BC Controller Ports
65
Size of the Pipe that Fits the Sub BC Controller Ports
66
Outdoor Unit Components
68
3 III Outdoor Unit Components
70
Outdoor Unit Components and Refrigerant Circuit
70
Control Box of the Outdoor Unit
75
Outdoor Unit Circuit Board
79
BC Controller Components
89
Control Box of the BC Controller
92
BC Controller Circuit Board
93
4 Remote Controller
96
Functions and Specifications of MA and ME Remote Controllers
98
Group Settings and Interlock Settings Via the ME Remote Controller
99
Remote Controller Function Selection Via the ME Remote Controller
101
Interlock Settings Via the MA Remote Controller
103
Using the Built-In Temperature Sensor on the Remote Controller
104
5 Electrical Wiring Diagram
106
Electrical Wiring Diagram of the Outdoor Unit
108
Electrical Wiring Diagram of the BC Controller
113
Electrical Wiring Diagram of Transmission Booster
123
6 Refrigerant Circuit
124
Refrigerant Circuit Diagram
126
Principal Parts and Functions
135
7 Control
144
Functions and Factory Settings of the Dipswitches
146
INV Board
148
Function of the Switch (Indoor Unit)
150
Function of the Switch - Remote Controller
151
Switch Functions - BC Controller
152
Controlling the Outdoor Unit
153
Startup Sequence Rotation
153
Bypass Control
154
Defrost Operation Control
156
Starting the Defrost Operation
156
Stopping the Defrost Operation
157
Problems During Defrost Operation
157
Change in the Number of Operating Indoor Units During Defrost
157
Refrigerant Recovery Control
158
Capacity Control of Outdoor Fan and Heat Exchanger
159
Control at Initial Start-Up
160
Emergency Operation Mode
162
Problems with the Outdoor Unit
162
Ending the Emergency Operation
162
Control Method
164
Cooling/Heating Circuit Control
165
General Function of System Equipment
165
Operation Mode
166
Operation Pattern for Automatic Cooling/Heating Mode
166
Relationship between the Operation Mode and the Load Capacity
166
Controlling BC Controller
168
Operation Flow Chart
169
8 Test Run Mode
176
Items to be Checked before a Test Run
178
Test Run Method
179
Operating Characteristic and Refrigerant Amount
180
Adjusting the Refrigerant Amount
180
Amount of Refrigerant to be Added
181
Refrigerant Amount Adjust Mode
183
The Following Symptoms Are Normal
185
Standard Operation Data (Reference Data)
186
Troubleshooting
202
9 IX Troubleshooting
204
Error Code Lists
204
Responding to Error Display on the Remote Controller
208
Serial Communication Error
208
Panel Communication Error
208
Discharge Temperature Fault
210
Low Pressure Fault
211
High Pressure Fault 1 (Outdoor Unit)
212
High Pressure Fault 2 (Outdoor Unit)
213
Refrigerant Overcharge
213
Drain Sensor Submergence (Models with a Drain Sensor)
214
Drain Sensor Submergence (Models with a Float Switch)
215
Drain Pump Fault (Models with a Drain Sensor)
216
Drain Pump Fault (Models with a Float Switch)
217
Drain Sensor (Thd) Fault
218
Water Leakage
219
Out-Of-Range Outside Air Temperature
220
Open Phase
221
Transmission Power Supply Fault Error Detail Code FF (Outdoor Unit)
223
Indoor Unit Fan Operation Error
224
Power Supply Signal Sync Error
225
RPM Error/Motor Error
226
Abnormal Bus Voltage Drop
227
Abnormal Bus Voltage Rise
229
VDC Error
230
Logic Error
231
Low Bus Voltage at Startup
232
Heatsink Overheat Protection
233
Overload Protection
235
IPM Error
237
DCCT Overcurrent
239
Instantaneous Overcurrent
239
Overcurrent (Effective Value)
239
Short-Circuited Ipm/Ground Fault
240
Overcurrent Error Due to Short-Circuited Motor
241
Heatsink Overheat Protection at Startup
241
Return Air Temperature Sensor (TH21) Fault (Indoor Unit)
242
Return Air Temperature Sensor (TH4) Fault (OA Processing Unit)
242
Heat Exchanger Outlet Temperature Sensor (TH3) Fault (Outdoor Unit)
243
Heatsink Temperature Sensor (THHS) Fault
244
Liquid Inlet Temperature Sensor (TH11) Fault (BC Controller)
245
Bypass Outlet Temperature Sensor (TH12) Fault (BC Controller)
245
LEV3 Outlet Temperature Sensor Fault (BC Controller)
245
High-Pressure Sensor Fault
246
High-Pressure Sensor Fault (Outdoor Unit HPS/BC Controller PS1)
247
Intermediate Pressure Sensor Fault (BC Controller PS3)
247
ACCT Sensor Fault
248
DCCT Sensor Fault
249
ACCT Sensor Circuit Fault
249
DCCT Sensor Circuit Fault
250
Open-Circuited Ipm/Loose ACCT Connector
250
Faulty ACCT Wiring
251
Temperature Sensor Fault
253
Loose Float Switch Connector
254
Remote Controller Board Fault (Nonvolatile Memory Error)
254
Remote Controller Board Fault (Clock IC Error)
254
Address Overlaps
255
Polarity Setting Error
255
Transmission Processor Hardware Error
256
Transmission Line Bus Busy Error
257
Communication Error between Device and Transmission Processors
257
No ACK Error
258
No Response Error
267
MA Controller Signal Reception Error (no Signal Reception)
268
MA Remote Controller Signal Transmission Error (Synchronization Error)
269
MA Remote Controller Signal Transmission Error (Hardware Error)
270
MA Controller Signal Reception Error (Start Bit Detection Error)
271
Total Capacity Error
272
Capacity Code Setting Error
273
Wrong Number of Connected Units
274
Address Setting Error
275
Port Setting Error
276
Connection Information Signal Transmission/Reception Error
277
Remote Controller Sensor Fault
277
Function Setting Error (Incorrect Resistor Connection)
278
Model Setting Error
279
Incompatible Unit Combination
280
Troubleshooting According to the Remote Controller Malfunction
281
Outdoor Unit Stops at Times During Operation
293
Investigation of Transmission Wave Shape/Noise
294
Troubleshooting Principal Parts
297
High-Pressure Sensor
297
Low-Pressure Sensor
298
Solenoid Valve
299
Outdoor Unit Fan
304
Lev
306
Troubleshooting Principal Parts of BC Controller
308
Pressure Sensor
308
Temperature Sensor
310
Troubleshooting Flow Chart for LEV Solenoid Valve
312
Troubleshooting Flow Chart for Solenoid Valve Body
315
BC Controller Transformer
318
Inverter (TJMU-A)
319
Inverter Output Related Troubles
321
Trouble Treatment When the Main Power Breaker Is Tripped
324
Checking Procedure for Individual Components of Main Inverter Circuit
325
Intelligent Power Module
326
Diode Stack
327
Troubleshooting for IGBT Module
327
Inverter (YJMU-A) - -Nverter-Related Problems
329
Checking for Individual Components of Main Inverter Circuit
334
Control Circuit (TJMU-A)
336
Control Power Source Function Block
336
Indoor Unit
337
Troubleshooting Transmission Power Circuit of Outdoor Unit
338
Control Circuit (YJMU-A)
340
Refrigerant Leak
342
Compressor Replacement Instructions
344
Servicing the BC Controller
359
Troubleshooting Using the Outdoor Unit LED Error Display
362
10 LED Monitor Display on the Outdoor Unit Board
364
How to Read the LED on the Service Monitor
366
LED Monitor Display on the Outdoor Unit Board
366
Time Data Storage Function
367
LED Monitor Display
368
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Mitsubishi Electric PURY-P72 Specifications
General
Brand
Mitsubishi Electric
Model
PURY-P72
Category
Air Conditioner
Language
English
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