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Hitachi Manuals
Air Conditioner
RAK-18NH6
Service manual
Table Of Contents - Hitachi RAK-18NH6 Service Manual
Indoor unit
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Also See for RAK-18NH6
:
Information booklet & user manual
(68 pages)
,
Installation manual
(2 pages)
,
Installation manual
(2 pages)
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Table Of Contents
78
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of
78
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78
Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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Table of Contents
Specifications
1
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
Conductive Container
3
Body Earth
3
Grounding Of The Working Table
4
Grounding A Soldering Iron
4
Specification Of Room Air Conditioner
7
Cool / Heat Capacity Spec. For Indoor Units
8
Indoor Units Combinations To Be Able To Install
9
Connecting Posision To Be Able To Install
10
Features
11
New Refrigerant
11
Safety During Servicing
11
Refrigerant Piping Materials
12
Thickness Of Refrigerant Piping
12
Flare's Expansion Pipe
12
Flare Nut Dimensions
12
Servicing Tools
13
New Tools
13
Servicing Work
14
Safety Precaution
15
Precautions During Installation
15
Precautions During Shifting Or Maintenance
15
Precautions During Operation
15
Names And Functions Of Each Part
17
Indoor Unit
17
Model Name And Dimensions
17
Indoor Unit Indicators
18
Operation Indicator
18
Temporary Switch
18
Names And Functions Of Remote Control Unit
19
Remote Controller
19
Precautions For Use
19
Various Functions
20
Automatic Operation
20
Auto Restart Control
20
Heating Operation
21
Dehumidifying Operation
22
Dehumidifying Function
22
Cooling Operation
23
Fan Operation
24
Fan Speed (Auto)
24
How To Set The Timer
25
Time, Day, Month
25
Off-Timer
25
On-Timer
25
How To Set The Sleep Timer
27
How To Cancel Reservation
27
Explanation Of The Sleep Timer
28
Adjusting The Air Deflector
29
How To Exchange The Batteries In The Remote Controller
30
The Ideal Ways Of Operation
31
Suitable Room Temperature
31
Install Curtain Or Blinds
31
Ventilation
31
The Air Conditioner And The Heat Source In The Room
32
Not Operating For A Long Time
32
When Lightning Occurs
32
Interference From Electrical Products
32
Attaching The Air Cleansing And Deodorizing Filters
33
Maintenance
34
Air Filter
34
Washable Front Panel
35
Removing The Front Panel
35
Attaching The Front Panel
35
Maintenance At Beginning Of Long Off Period
36
Regular Inspection
36
After Sale Service And Warranty
37
Construction And Dimensional Diagram
39
Main Parts Component
40
Thermostat
40
Thermostat Specifications
40
Fan Motor Specifications
40
Wiring Diagram
41
Circuit Diagram
42
Remote Control
42
Printed Wiring Board Location Diagram
44
Block Diagram
46
Basic Mode
47
Fan Speed By Mode
48
Room Temperature Shift Value
48
Basic Cooling Operation
49
New Cool Rhythm
50
Cooling Sleep Operation
50
Cooling Defrost
50
Dehumidifying
51
Dehumidifying Sleep Operation
51
Basic Heating Operation
52
Reversing Valve Defrosting
53
Setting Defrosting Inhibit Period
53
Heating Sleep Operation
53
Refrigerant Cycle Diagra M
54
Cooling, Dehumidifying Defrosting
54
Heating
55
Auto Swing Function
56
Description Of Main Circuit Operation
57
Reset Circuit
57
Receiver Circuit
58
Buzzer Circuit
58
Auto Sweep Motor Circuit
59
Microcomputer Output Signals
59
Auto Sweep Motor Rotation
59
Room Temperature Thermistor Circuit
60
Heat Exchanger Temperature Thermistor Circuit
60
Initial Setting Circuit
61
Service Call Q & A
62
Cooling Mode
62
Dehumidifying Mode
62
Heating Mode
62
Auto Fresh Defrosting
63
Auto Operation
63
Nice Temperature Reservation
63
Infrared Remote Control
63
Others
64
Troubleshooting When Timer Lamp Blinks
65
Self-Diagnosis Lighting Mode
65
Checking Indoor Unit Electrical Parts
66
Power Does Not Come On
66
Only Indoor Fan Does Not Operate
67
Air Deflector Does Not Move
67
Check The Main P.w.b.
68
Checking The Remote Controller
69
Using The Test Card
69
Procedure For Disassembly And Reassembly
70
Front Panel
70
Main P.w.b. And Reception/Indication
70
Front Cover
70
Tangential Air Flow Fan And Fan Motor
71
Parts List And Diagram
72
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This manual is also suitable for:
Rak-35nh6
Rak-25nh6
Rak-50nh6
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