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RAS-35FH6
Hitachi RAS-35FH6 Manuals
Manuals and User Guides for Hitachi RAS-35FH6. We have
1
Hitachi RAS-35FH6 manual available for free PDF download: Service Manual
Hitachi RAS-35FH6 Service Manual (97 pages)
DC INVERTER (WALL TYPE) TYPE
Brand:
Hitachi
| Category:
Air Conditioner
| Size: 11.92 MB
Table of Contents
Table of Contents
1
Specifications
1
Room Air Conditioner
1
Technical Information
1
Service Manual
1
Safety During Repair Work
2
Working Standards for Preventing Breakage of Semiconductors
3
Grounding of the Working Table
4
Grounding a Soldering Iron
4
Specifications
6
Safety Precaution
7
Precautions During Installation
7
Precautions During Shifting or Maintenance
7
How to Use
7
Name and Function of each Part
8
Indoor Unit
8
Outdoor Unit
8
Indoor Unit Indications
8
Automatic Operation
9
Remote Controller
9
Auto Restart Control
9
Various Functions
9
Heating Operation
10
Dehumidifying Operation
10
Defrosting
10
Dehumidifying Function
10
Cooling Operation
11
Fan Operation
11
Fan Speed (Auto)
11
How to Set the Timer
12
How to Cancel Reservation
12
Time
12
Off-Timer
12
How to Set the Sleep Timer
13
Adjusting the Air Deflectors
13
How to Exchange the Batteries in the Remote Controller
13
Cleaning of Front Panel
14
Maintenance at Beginning of Long off Period
14
Air Filter
14
Maintenance
14
Information
15
Regular Inspection
15
After Sales Service and Warranty
15
Capabilities
15
Construction and Dimensional Diagram
17
Construction and Dimensional Diagram
18
Main Electric Components for Outdoor Unit
19
Thermostat
19
Fan Motor
19
Main Parts Component
19
Compressor Motor
20
Compressor Motor Specifications
20
Front Side of Outdoor Unit
20
Wiring Diagram
21
Circuit Diagram
22
Block Diagram
24
Basic Mode
25
Mode Data File
26
Basic Cooling Operation
27
Thermo Judgment
27
Compressor Speed
27
Cooling Sleep Operation
28
Cooling Defrost
28
Dehumidifying Sleep Operation
28
Basic Heating Operation
29
Setting Defrosting Inhibit Period
30
Heating Sleep Operation
30
Reversing Valve Defrosting
30
Refrigerating Cycle Diagram
31
Reset Circuit
32
Description of Main Circuit Operation
32
Receiver Circuit
33
Buzzer Circuit
33
Buzzer Operation
33
Microcomputer Output Signals
34
Auto Sweep Motor Circuit
34
Auto Sweep Motor Drive Circuit
34
Initial Setting Circuit (IC401)
35
Power Supply
35
Fan Motor Drive Circuit
36
Model RAC-35YH6
37
Power Circuit
38
Indoor/Outdoor Interface Circuit
40
Interface Circuit Used for the Indoor and Outdoor Microcomputers to Communicate with each Other
41
Voltages Waveforms of Indoor / Outdoor Microcomputers (Outdoor to Indoor Communications)
42
Voltages Waveforms of Indoor / Outdoor Microcomputers (Indoor to Outdoor Communications)
42
Serial Communications Format During Normal Communications
43
Serial Communications Data
44
IPM (Intelligent Power Module)
45
Intelligent Power Module and Its Peripheral Circuit
45
Switching Order of Power Module
46
Voltage Waveform at each Point
46
Power Module Circuit
47
IPM Drive Circuit
48
Power Circuit for P.W.B.
49
Check Points
50
Microcpomputer's Peripheral Circuits
51
Overload Control Circuit (OVL Control Circuit)
51
Is Ovl
52
ID Ovl
52
Rotation Speed Control
52
Start Current Control
53
Waveform at each Point
54
Temperature Detection Circuit
55
Reversing Valve Control Circuit
56
Electric Expansion Valve Control Circuit
57
Outdoor DC Fan Motor Control Circuit
58
Service Call Questions and Answers
60
Cooling Mode
60
Dehumidifying Mode
60
Heating Mode
60
Infrared Remote Control
61
Auto Operation
61
RAC-35YH6 Precautions for Checking
63
Trouble Shooting
63
Discharge, Procedure and Power Shut off Method for Power Circuit
64
Discharge Procedure
64
Structure of an Indoor Unit Electric Parts (RAS-35FH6)
65
Removing Electrical Parts
65
Removing Control P.W.B.
65
Removing the Indicating P.W.B.
65
Other Cautions
66
The Support Function of Failure Diagnosis
67
Troubleshooting When Timer Lamp Blinks
68
Self-Diagnosis Lighting Mode
68
Remove the Compressor Connector
70
Outdoor Unit
70
Checking the Indoor/Outdoor Unit Electrical Parts and Refrigerating
71
Checking the Indoor Unit Electrical Parts
72
Checking the Remote Controller
75
Removing the P.w.b.s
76
Checking the Outdoor Unit Electrical Parts
78
How to Change the Shift Value for Setting Temperature
85
Procedure
85
Checking the Refrigerating Cycle
86
How to Operate Using the Service Switch the Outdoor Unit
87
How to Operate the Outdoor Unit Independently
87
IPM (Intelligent Power Module) Diagnosis
88
Control P.W.B. and Indicating P.W.B.
90
Front Panel
90
Front Cover
90
Procedure for Disassembly and Reassembly
90
Outdoor Unit RAC-35YH6
91
Tangential Air Flow Fan and Fan Motor
91
Electrical Parts
91
Indoor Unit Exploded View
92
Parts List and Diagram
92
Outdoor Unit Exploded View
94
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