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PU(H)Y-P250YGM-A
User Manuals: Mitsubishi Electric PU(H)Y-P250YGM-A Air
Manuals and User Guides for Mitsubishi Electric PU(H)Y-P250YGM-A Air. We have
2
Mitsubishi Electric PU(H)Y-P250YGM-A Air manuals available for free PDF download: Service Handbook, Service Manual
Mitsubishi Electric PU(H)Y-P250YGM-A Service Handbook (216 pages)
Brand:
Mitsubishi Electric
| Category:
Air Conditioner
| Size: 6.82 MB
Table of Contents
Safety Precautions
2
Before Installing the Unit
5
Before the Test Run
7
Table of Contents
8
Read before Servicing
10
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
20
Remedies to be Taken in Case of a Refrigerant Leak
20
Characteristics of the Conventional and the New Refrigerants
21
Notes on Refrigerating Machine Oil
22
II Restrictions
24
System Configuration
26
Types and Maximum Allowable Length of Cables
27
Switch Settings and Address Settings
29
An Example of a System to Which an MA Remote Controller Is Connected
31
Wiring Method/Address Setting Method
32
System with Two Refrigerant Circuits
33
System in Which Two MA Remote Controllers Connected to One Indoor Unit
35
System in Which Two Indoor Units Are Grouped with MA Remote Controller
37
Restrictions on Pipe Length
39
Outdoor Unit Components
40
Outdoor Unit Components and Refrigerant Circuit
42
Control Box of the Outdoor Unit
46
Outdoor Unit Circuit Board
48
Indoor Unit Components
52
External Dimensions
54
Indoor Unit Components and Internal Structure
56
Control Box of the Indoor Unit
60
Indoor Unit Circuit Board
61
Separating the Top and Bottom of the Indoor Unit
62
Electrical Wiring Diagram
66
Electrical Wiring Diagram of the Outdoor Unit
68
Electrical Wiring Diagram of the Indoor Unit
70
Refrigerant Circuit
72
Refrigerant Circuit Diagram
74
Principal Parts and Functions
77
Control
82
Functions and Factory Settings of the Dipswitches
84
Controlling the Outdoor Unit
89
Initial Control
89
Control at Start-Up
89
Bypass Control
89
Compressor Frequency Control
90
Defrost Operation Control
91
Refrigerant Recovery Control
92
Capacity Control of Outdoor Fan and Heat Exchanger
93
Subcool Coil Control (Linear Expansion Valve)
93
Control at Initial Start-Up
94
Emergency Operation Mode
95
Capacity Control between Outdoor Units
96
Dehumidification Priority Control
96
Operation Mode
96
Controlling the Indoor Unit
97
Thermostat Functions
97
Thermostat Reading
97
Actuator Control
98
Temperature Setting Range
98
Anti-Freeze Control (in Cooling Mode)
99
Switch between Pulse and Level of MA Remote Controller External Input
100
Operation During Electrical Power Failure
100
Operation Flow Chart
101
Operations in each Mode
103
Cooling Operation
103
Heating Operation (for Warming up the Indoor Unit)
104
Test Run Mode
106
Items to be Checked before a Test Run
108
Test Run Method
109
Operating Characteristic and Refrigerant Amount
110
Adjusting the Refrigerant Amount
111
Refrigerant Amount Adjust Mode
113
The Following Symptoms Are Normal
115
Standard Operation Data (Reference Data)
116
Troubleshooting
118
Error Code Lists
120
Responding to Error Display on the Remote Controller
123
Temperature Sensor Failure (Outdoor Unit)
135
Transmission Error
138
System with the Main Remote Controller Connected
141
Errors that Are Not Limited to a Particular System
142
System Error
144
Troubleshooting According to Malfunction of the Remote Controller
146
Flowchart When the MA Remote Controller Cannot be Operated
149
In Case of Main Remote Controller
150
In Case of External Input (Including Operation Mode)
152
Investigation of Transmission Wave Shape/Noise
153
M-NET Transmission
153
Wave Shape Check
153
MA Remote Controller Transmission
155
Troubleshooting Principal Parts
156
High-Prmessure Sensor (63HS)
156
Pressure Sensor Configuration
156
Low-Pressure Sensor (63LS)
157
Solenoid Valve
158
Outdoor Unit Fan
160
LEV Troubleshooting
161
Indoor Unit LEV
161
LEV Valve Closing and Opening Operation
161
Outdoor Unit LEV
162
Outdoor Unit LEV1 Coil Removal Procedure
164
Inverter Troubleshooting
165
Inverter Output Related Troubles
166
Trouble Treatment When the Main Power Breaker Is Tripped
169
Checking Procedure for Individual Components of Main Inverter Circuit
170
Intelligent Power Module (IPM)
171
Diode Stack
172
Control Circuit Troubleshooting
173
Control Power Source Function Block
173
Indoor Unit
173
Troubleshooting Transmission Power Circuit of Outdoor Unit
175
Refrigerant Leak
176
Leak Spot: in the Case of Extension Pipe for Indoor Unit
176
Leak Spot: in the Case of Outdoor Unit
176
Compressor Replacement Instructions (Only P500 Type)
177
Collecting the Cooling Liquid from the Accumulator (Only P500 Type)
178
Maintenance/Inspection Schedule
179
Approximate Long Evity of Various Parts
179
Details of Maintenance/Inspection
180
X LED Monitor Display on the Outdoor Unit Board
182
How to Read the LED on the Service Monitor
184
XLED Monitor Display on the Outdoor Unit Board
184
Time Data Storage Function
185
Table of LED Codes
186
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Mitsubishi Electric PU(H)Y-P250YGM-A Service Manual (41 pages)
Brand:
Mitsubishi Electric
| Category:
Air Conditioner
| Size: 0.92 MB
Table of Contents
Table of Contents
1
1 Specifications
3
Main Features
3
List of Possible Combinations of Indoor and Outdoor Units
4
Unit Specifications
5
2 Capacity Curves
6
Cooling Capacity
6
Cooling Input
6
SHF Curves
7
Correction by Refrigerant Piping Length
8
Operation Limit
8
3 Sound Levels
9
Noise Level
9
NC Curves
10
Fan Characteristics Curves
10
4 External Dimensions
11
5 Electrical Wiring Diagrams
15
6 Refrigerant Circuit Diagram and Thermal Sensor
19
7 System Design
21
Refrigerant Piping System
21
Control Wiring
22
Types of Switch Settings and Setting Methods
23
Sample System Connection
25
External Input/Output Specifications
29
8 Air Conditioning the Computer Room
32
Main Features of the Floor-Duct Air Conditioners
32
Features of Air-Conditioner for Computer Room
32
Step-By-Step Plan for the Implementation of the Air-Conditioning
33
Conditions for the Installation of Computer-Room Air Conditioners
34
Setting the Air Conditioners
35
Automatic Control of the Computer Room
37
9 Maintenance/Inspection
38
Maintenance/Inspection Schedule
38
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