Mitsubishi Electric PUHY-P250YHA Manuals

Manuals and User Guides for Mitsubishi Electric PUHY-P250YHA. We have 1 Mitsubishi Electric PUHY-P250YHA manual available for free PDF download: Service Handbook

Mitsubishi Electric PUHY-P250YHA Service Handbook

Mitsubishi Electric PUHY-P250YHA Service Handbook (302 pages)

Brand: Mitsubishi Electric | Category: Air Conditioner | Size: 11 MB

Table of Contents

Safety Precautions
2
Before Installing the Unit
5
Table of Contents
8
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
Pressure Characteristics
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
28
Sample System Connection
35
An Example of a System to Which an MA Remote Controller Is Connected
37
An Example of a System to Which an ME Remote Controller Is Connected
47
An Example of a System to Which both MA Remote Controller and ME Remote Controller Are Connected
49
Restrictions on Pipe Length
51
Operation
52
Outdoor Unit Components
56
Outdoor Unit Components and Refrigerant Circuit
58
Control Box of the Outdoor Unit
60
Outdoor Unit Circuit Board
61
INV Board
63
Fan Board
64
Noise Filter
65
Remote Controller
66
Functions and Specifications of MA and ME Remote Controllers
68
Group Settings and Interlock Settings Via the ME Remote Controller
69
Interlock Settings Via the MA Remote Controller
73
Using the Built-In Temperature Sensor on the Remote Controller
74
Electrical Wiring Diagram
76
Electrical Wiring Diagram of the Outdoor Unit
78
Electrical Wiring Diagram of Transmission Booster
79
Refrigerant Circuit
80
Refrigerant Circuit Diagram
82
Principal Parts and Functions
83
Indoor Unit
86
Control
88
Functions and Factory Settings of the Dipswitches
90
Controlling the Outdoor Unit
96
Initial Control
96
Bypass Control
97
Refrigerant Recovery Control
101
Control at Initial Start-Up
102
Emergency Operation Mode
105
Operation Mode
107
DEMAND Control
108
Operation Flow Chart
109
Heating Operation
112
Dry Operation
113
Test Run Mode
114
Items to be Checked before a Test Run
116
Test Run Method
117
Operating Characteristic and Refrigerant Amount
118
Adjusting the Refrigerant Amount
118
Refrigerant Amount Adjust Mode
121
The Following Symptoms Are Normal
123
Standard Operation Data (Reference Data)
124
Troubleshooting
162
Error Code Lists
164
Responding to Error Display on the Remote Controller
167
Overload Protection
184
System Configuration
197
Investigation of Transmission Wave Shape/Noise
228
Troubleshooting Principal Parts
231
Solenoid Valve
233
Outdoor Unit Fan
234
Refrigerant Leak
251
Compressor Replacement Instructions
253
Troubleshooting Using the Outdoor Unit LED Error Display
255
LED Monitor Display on the Outdoor Unit Board
256
How to Read the LED on the Service Monitor
258

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