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RAM-90NP5B
Hitachi RAM-90NP5B Manuals
Manuals and User Guides for Hitachi RAM-90NP5B. We have
5
Hitachi RAM-90NP5B manuals available for free PDF download: Service Manual
Hitachi RAM-90NP5B Service Manual (76 pages)
Brand:
Hitachi
| Category:
Air Conditioner
| Size: 26.22 MB
Table of Contents
Table of Contents
1
Service Manual
1
Technical Information
1
Room Air Conditioner
1
Safety During Repair Work
2
Working Standards for Preventing Breakage of Semiconductors
3
Items to be Observed in Handling
3
Body Earth
3
Grounding a Solder Iron
4
Grounding of the Working Table
4
Caution
5
Specifications
6
Combinations to Able to Operate Simultaneously
8
Indoor Units Combinations to be Able to Install
11
New Refrigerant
13
Refrigerant Piping Materials
14
Servicing Tools
15
Air Purging by Using Vacuum Pump
16
Height Difference
17
Pipe Length
17
Installation
17
Connecting the Pipe
18
Flare Adaptor for Piping
18
Condensed Water Disposal of Outdoor Unit
19
When Using and Installing in Cold Areas
19
Connection of the Connecting Cords and Power Cord (Outdoor Unit)
20
Construction and Dimensional Diagram
21
Wiring Diagram
22
Compressor Motor Specifications
23
Fan Motor Specifications
24
Main Parts Component
24
Circuit Diagram
25
Block Diagram
26
Printed Wiring Board Location Diagrams
27
Basic Mode
32
Basic Cooling Operation
34
Cooling Sleep Operation
35
Cooling Defrost
35
Dehumidifying
36
Dehumidifying Sleep Operation
36
Heating Basic Operation
37
Heating Sleep Operation
38
Expansion Valves
39
Compressor Rotation Speed
39
Defrost
40
Release Condition of Auto-Fresh
42
Outputs During Auto-Fresh
42
Start Conditions for Auto-Fresh
42
Auto-Fresh Defrost
42
Forced Cooling
43
Processing at Overheat Thermistor (OH) High Temperature
44
Refrigerating Cycle Diagram
46
Description of Main Operation Circuit
47
Control Power Supply Circuit
47
Inverter Microcomputer Power Control
48
Specifications and Checkpoints for Control Power Supply Circuits
48
Converter Circuit
49
Smoothing Capacitor
50
Inspection When Timer Lamp on Indoor Unit Blinks Once
51
Temperature Detection Circuit
52
Electric Expansion Valve Circuit
53
Outdoor Fan Motor Control Circuit
55
Procedure for Checking the Outdoor Fan Motor
56
Indoor/Outdoor Communication Circuit
57
Troubleshooting
58
Precautions for Checking
58
Self-Check Diagnosis Result
59
Self-Check Diagnosis Method
59
Collect Refrigerant Using Test Switch Operation
60
How to Operate the Outdoor Unit Independently
61
Lighting Mode of the Self-Diagnosis Lamp
61
Mounting Location of the Self-Diagnosis Lamp
61
Refrigerant Cycle Check (Gas Leak or Compressor Failure)
63
Checking Electrical Parts of Outdoor Unit
64
Dismantle and Assembly Procedure
69
Parts List and Diagram
72
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Hitachi RAM-90NP5B Service Manual (109 pages)
Brand:
Hitachi
| Category:
Air Conditioner
| Size: 78.52 MB
Table of Contents
Table of Contents
1
Specifications
6
How to Use
10
Construction and Dimensional Diagram
44
Main Parts Component
46
Wiring Diagram
47
Circuit Diagram
49
Block Diagram
51
Basic Mode
52
Refrigerating Cycle Diagram
64
Procedure for Disassembly and Reassembly
66
Description of Main Circuit Operation
68
Service Call Q&A
77
Parts List and Diagram
105
Rak-25Rpb Rak-35Rpb
109
Hitachi RAM-90NP5B Service Manual (92 pages)
Brand:
Hitachi
| Category:
Air Conditioner
| Size: 11.39 MB
Table of Contents
Table of Contents
1
Specifications
6
How to Use
9
Construction and Dimensional Diagram
29
Main Parts Component
30
Wiring Diagram
31
Circuit Diagram
33
Block Diagram
35
Basic Mode
36
Refrigerating Cycle Diagram
47
Procedure for Disassembly and Reassembly
49
Description of Main Circuit Operation
51
Service Call Q&A
61
Various Settings
71
Parts List and Diagram
90
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Hitachi RAM-90NP5B Service Manual (90 pages)
Brand:
Hitachi
| Category:
Air Conditioner
| Size: 38.71 MB
Table of Contents
Table of Contents
1
Specifications
6
How to Use
9
Construction and Dimensional Diagram
29
Main Parts Component
30
Wiring Diagram
31
Circuit Diagram
33
Block Diagram
35
Basic Mode
36
Refrigerating Cycle Diagram
48
Procedure for Disassembly and Reassembly
49
Description of Main Circuit Operation
51
Service Call Q&A
60
Various Settings
70
Parts List and Diagram
88
Rak-18Rpc Rak-25Rpc
90
Hitachi RAM-90NP5B Service Manual (86 pages)
Brand:
Hitachi
| Category:
Air Conditioner
| Size: 20.6 MB
Table of Contents
Table of Contents
1
Specifications
6
How to Use
8
Construction and Dimensional Diagram
28
Main Parts Component
29
Wiring Diagram
30
Circuit Diagram
32
Block Diagram
33
Basic Mode
34
Refrigerating Cycle Diagram
46
Procedure for Disassembly and Reassembly
47
Description of Main Circuit Operation
48
Service Call Q&A
56
Parts List and Diagram
84
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