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RAC-25WEC
Hitachi RAC-25WEC Air Conditioner Manuals
Manuals and User Guides for Hitachi RAC-25WEC Air Conditioner. We have
3
Hitachi RAC-25WEC Air Conditioner manuals available for free PDF download: Service Manual, Installation Manual
Hitachi RAC-25WEC Service Manual (114 pages)
Brand:
Hitachi
| Category:
Air Conditioner
| Size: 14.77 MB
Table of Contents
Specifications
1
Specifications
6
Figure Showing the Installation of Lndoor and Outdoor Unit
7
Manual Operation
9
Names and Functions
9
Operation Mode Selection
9
Room Temperature Setting
9
Timer Reservation
10
Powerful Operation
10
ON Time Setting
10
Adjusting the Airflow Direction
11
How to Exchange the Batteries
11
ECO Operation
11
Adjust the Airflow Upward and Downward
12
Adjust the Airflow to Left and Right
12
Precautions During Installation
13
Precautions During Operation
13
Safety
13
Indoor Unit Indications
14
Indoor Unit
14
Outdoor Unit
14
Maintenance
15
Cleaning of Front Panel
15
Attaching the Front Panel
15
Removing the Front Panel
15
Regular Inspection
16
After Sales Service
16
Capabilities
16
Construction and Dimensional Diagram
18
Main Parts Component
21
Thermostat Specifications
21
Fan Motor Specifications
21
Main Electric Components for Outdoor Unit
21
Compressor Motor Specifications
22
Wiring Diagram
23
Wiring Diagram of the Printed Wiring Board
24
Circuit Diagram
25
Block Diagram
28
Basic Mode
29
Mode Data File
30
Basic Cooling Operation
31
Cooling Defrost
32
Cooling Powerful Operation
32
Dehumidifying
33
Dehumidifying Powerful Operation
34
Basic Heating Operation
35
Reversing Valve Defrosting
36
Setting Defrosting Inhibit Period
36
Heating Powerful Operation
37
Leave Home
37
Eoc
38
Refrigerating Cycle Diagram
39
Cooling Cycle
39
Heating Cycle
39
Procedure for Disassembly and Reassembly
42
Front Panel
42
Control P .W.B. and Indicating P.W.B.
42
Front Cover
42
Table of Contents
43
Tangential Air Flow Fan and Fan Motor
43
Electrical Parts
43
Outdoor Unit
44
Electrical Parts
44
Fig. 11
44
Description of Main Circuit Operation
45
Control Power Circuit
45
Fig
45
Reset Circuit
46
Timing Chart
46
Drive Circuit of the Indoor Fan Motor
47
The Circuit Check
47
Typical Circuit Waveform
47
Fig
47
Buzzer Circuit
48
Fig
48
Remote Control Reception Circuit
48
Heat Exchanger Thermistor Circuit
49
Initial Setting Circuit
49
Room Temperature Thermistor Circuit
49
Temporary Switch Circuit
49
Dip Switch Circuit
50
Dip-Switch
50
Functions of DIP Switch
50
Enlarged Waveform
51
Indoor/Outdoor Communication Circuits
51
Connector Circuit Waveform While the Motor Runs
52
Stepping Motor Drive Circuit
52
Diode Stack
53
Main Parts
53
Power Circuit
53
Power Circuit (Low Voltage)
54
P.W.B. for Power Circuit
55
Reversing Valve Control Circuit
56
Temperature Detection Circuit
57
Electric Expansion Valve Circuit
58
Fan Motor Speed Controller During Starting
59
Fan Motor Speed Controller During Unit Operating
59
Outdoor DC Fan Motor Control Circuit
59
Checking Fan Motor
60
Igbt
62
Smoothing Capacitors
62
Cooling Operation
70
Dehumidification
70
Heating Operation
70
Service Call Q & a
70
Common, Etc.
71
Wireless Remote Control
72
Inspection Instructions
73
Trouble Shooting
73
Discharge, Procedure and Power Shut off Method for Power Circuit
74
Removing Control P.W.B
75
Removing the Indicating P.W.B
75
Structure of an Indoor Unit Electric Parts
75
Detaching and Reattaching the Board Connector
76
Detaching and Reattaching the Receptacles for Tab Terminal
76
Receptacle Types and How to Unlock Them
76
Troubleshooting Support
77
How to Count the Lamp Blinking Frequency
78
Self-Diagnosis Display Function (Indoor Side Display)
78
Self-Diagnosis Lighting Mode
79
Forced Cooling Operation
81
How to Start the Operation
81
How to Stop the Operation
81
Initiating Troubleshooting
82
Check Results and Next Check Items
83
Checking the Indoor Unit Electrical Parts
83
Failure Phenomenon: the Power will Not Become Turned on
84
The Product will Not Receive a Remote Control Signal
85
Failure Phenomenon: the Compressor will Not Run
88
Failure Phenomenon: the Fan Motor will Not Stop
89
Timer Lamp Blinking: Blinking Four Times
90
Timer Lamp Blinking: Blinking Once
90
Timer Lamp Blinking: Blinking Three Times
90
Timer Lamp Blinking: Blinking Twice
90
Timer Lamp Blinking: Blinking 9 Times
91
Timer Lamp Blinking: Blinking 10 Times
92
Timer Lamp Blinking: Blinking 12 Times
93
Checking the Electrical Parts of the Outdoor Unit
94
Remove Rear Cover as Shown in Figure
100
Setting the Prevention of Mutual Interference for Remote Controller
100
How to Change the Shift Value Setting Temperature
101
Checking the Refrigerating Cycle
102
How to Run the Product with the Outdoor Unit Test Switch
103
How to Operate the Outdoor Unit Independently
104
Parts List and Diagram
105
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Hitachi RAC-25WEC Installation Manual (2 pages)
Brand:
Hitachi
| Category:
Air Conditioner
| Size: 1.41 MB
Hitachi RAC-25WEC Installation Manual (2 pages)
Brand:
Hitachi
| Category:
Air Conditioner
| Size: 1.87 MB
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