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PUHY-P250YJM-A
Mitsubishi PUHY-P250YJM-A User Manual
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2
Table of Contents
Default Chapter
2
Safety Precautions
2
Before Installing the Unit
5
Electrical Work
6
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
Restrictions
24
System Configuration
26
Types and Maximum Allowable Length of Cables
27
Switch Settings and Address Settings
29
Demand Control
31
An Example of a System to Which an MA Remote Controller Is Connected
33
Restrictions on Pipe Length
41
Outdoor Unit Components
44
Outdoor Unit Components and Refrigerant Circuit
46
Control Box of the Outdoor Unit
48
Outdoor Unit Circuit Board
49
Inv Board
51
Fan Board
52
Noise Filter
53
Indoor Unit Components
54
External Dimensions
56
Indoor Unit Components and Internal Structure
58
Control Box of the Indoor Unit
62
Indoor Unit Circuit Board
63
Separating the Top and Bottom of the Unit
64
Electrical Wiring Diagram
68
Electrical Wiring Diagram of the Outdoor Unit
70
Electrical Wiring Diagram of the Indoor Unit
71
Refrigerant Circuit
74
Refrigerant Circuit Diagram
76
Principal Parts and Functions
79
Control
84
Functions and Factory Settings of the Dipswitches
86
Controlling the Outdoor Unit
91
Defrost Operation Control
94
Refrigerant Recovery Control
95
Controlling the Indoor Unit
103
Actuator Control
104
Emergency Operation Mode
104
Operation Flow Chart
107
Test Run Mode
112
Items to be Checked before a Test Run
114
Test Run Method
115
Operating Characteristic and Refrigerant Amount
116
Adjusting the Refrigerant Amount
116
Refrigerant Amount Adjust Mode
118
The Following Symptoms Are Normal
120
Standard Operation Data (Reference Data)
121
Initialization Procedure for System Rotation Settings
122
Troubleshooting
130
Error Code Lists
132
Responding to Error Display on the Remote Controller
135
Error Code
157
System Controller
181
Investigation of Transmission Wave Shape/Noise
187
Troubleshooting Principal Parts
190
Indoor Unit
207
Refrigerant Leak
209
Compressor Replacement Instructions
210
Troubleshooting Using the Outdoor Unit LED Error Display
212
Replacement Instructions for Motor and Bearing
213
Maintenance/Inspection Schedule
219
LED Monitor Display on the Outdoor Unit Board
222
How to Read the LED on the Service Monitor
224
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Mitsubishi PUHY-P250YJM-A Specifications
General
Brand
Mitsubishi
Model
PUHY-P250YJM-A
Category
Air Conditioner
Language
English
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