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RAC-50YH7
Hitachi RAC-50YH7 Manuals
Manuals and User Guides for Hitachi RAC-50YH7. We have
3
Hitachi RAC-50YH7 manuals available for free PDF download: Service Manual, Installation Manual
Hitachi RAC-50YH7 Service Manual (93 pages)
Brand:
Hitachi
| Category:
Air Conditioner
| Size: 21.78 MB
Table of Contents
Table of Contents
1
Specifications
1
Service Manual
1
Technical Information
1
Room Air Conditioner
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
Cautions
5
Specifications
6
Installation of Indoor and Outdoor Unit
7
Names and Functions of each Part
8
Dimensions
8
Temporary Switch
9
Operation Indicator
9
Indoor Unit Indicators
9
Safety Precautions
11
Precautions During Installation
11
Remote Control Unit
13
Automatic Operation
14
Auto Restart Control
14
Heating Operation
15
Defrosting
15
Dehumidifying Operation
16
Cooling Operation
17
Fan Operation
18
To Set the Timer
19
How to Cancel Reservation
19
To Set the Sleep Timer
21
To Exchange the Batteries in the Remote Controller
22
Circuit Breaker
22
The Ideal Ways of Operation
23
Suitable Room Temperature
23
The Air Conditioner and the Heat Source in the Room
24
Not Operating for a Long Time
24
When Lightning Occurs
24
Interference from Electrical Products
24
Attaching the Air Cleansing Filters
25
Maintenance
26
Air Filter
26
Washable Front Panel Removal/Attachment
27
Regular Inspection
28
Maintenance at Beginning of Long off Period
28
Construction and Dimensional Diagram
30
Construction and Dimensional Diagram for Outdoor
31
Thermostat (Room Temperature Thermistor)
32
Indoor Fan Motor
32
Outdoor Fan Motor
32
Main Parts Component
32
Compressor Motor Specifications
33
Wiring Diagram
34
Circuit Diagram
35
Printed Wiring Board Location Diagram
38
Block Diagram
41
Basic Mode
42
Mode Data File
43
Basic Cooling Operation
44
Cooling Defrost
45
Cooling Sleep Operation
45
Dehumidifying
46
Basic Heating Operation
47
Reversing Valve Defrosting
48
Heating Sleep Operation
48
Setting Defrosting Inhibit Period
48
Refrigerating Cycle Diagram
49
Auto Swing Function
50
Reset Circuit
51
Description of Main Circuit Operation
51
Receiver Circuit
52
Buzzer Circuit
52
Auto Sweep Motor Circuit
53
Room Temperature Thermistor Circuit
54
Heat Exchanger Temperature Thermistor Circuit
54
Initial Setting Circuit
55
Power Circuit
56
PWB for Power Circuit
58
Reversing Valve Control Circuit
59
Temperature Detection Circuit
60
Electric Expansion Valve Circuit
61
Outdoor DC Fan Motor Control Circuit
62
Checking Fan Motor Procedure
63
Cooling Mode
64
Dehumidifying Mode
64
Heating Mode
64
Service Call Q & a
64
Auto Refresh Defrosting
65
Auto Operation
65
Nice Temperature Reservation
65
At Starting Operation
66
Precautions for Checking
68
Trouble Shooting
68
Discharge Procedure and Method to Stop Energize the Power Circuit
69
Disconnection of Tab Terminal Receptacle
70
Disconnecting on Board Connector
70
Connector Disconnection During Discharge Is Prohibited
70
Checking the Indoor Timer Lamp if Blinking 1 Time
71
Checking the Indoor/Outdoor Unit Electrical Parts/Refrigerating Cycle
72
Troubleshooting When Timer Lamp Blinks
73
Self-Diagnosing Lighting Mode
73
Checking Indoor Unit Electrical Parts
74
Power Does Not Come on (no Operation)
74
Outdoor Unit Does Not Operate (but Receives Remote Infrared Signal)
75
All Systems Stop from Several Seconds to Several Minutes after Start
76
Air Deflector Does Not Move (Others Are Normal)
76
Only Indoor Fan Does Not Operate (Other Is Normal)
76
Check the Main P.W.B (Power Circuit)
77
Checking the Outdoor Unit Electrical Part
78
Self Check
82
To Operate Using Outdoor Unit Test Switch
83
Lighting Mode of Self-Diagnosis Lamp
84
Position of Self-Diagnosis Lamp
84
Checking the Remote Controller
86
Checking the Refrigerating Cycle
87
Troubleshooting Procedure (no Operation, no Heating, no Cooling)
87
Indor Unit Diagram
88
Parts List and Diagram
88
Parts List
89
Outdoor Unit Diagram
90
Outdoor Unit Parts List
91
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Hitachi RAC-50YH7 Service Manual (103 pages)
Brand:
Hitachi
| Category:
Air Conditioner
| Size: 14.1 MB
Table of Contents
Table of Contents
1
Service Manual
1
Technical Information
1
Room Air Conditioner
1
Specifications
6
Names and Functions of each Part
8
Indoor Unit Indicators
9
Safety Precaution
11
Precautions During Installation
11
Names and Functions of Remote Control Unit
13
Automatic Operation
14
Heating Operation
15
Dehumidifying Operation
16
Cooling Operation
17
Fan Operation
18
How to Set the Timer
19
How to Set the Sleep Timer
21
Circuit Breaker
23
Suitable Room Temperature
24
Attaching the Air Cleansing Filters
26
Construction and Dimensional Diagram
31
Main Parts Component
33
Circuit Diagram
36
Printed Wiring Board Location Diagram
39
Refrigerating Cycle Diagram
50
Description of Main Circuit Operation
52
Service Call Q & a
76
Trouble Shooting
79
Checking Indoor Unit Electrical Parts
84
Checking the Refrigerating Cycle
95
How to Operate the Outdoor Unit Independently
97
Parts List and Diagram
99
Hitachi RAC-50YH7 Installation Manual (2 pages)
SPLIT UNIT AIR CONDITIONER
Brand:
Hitachi
| Category:
Air Conditioner
| Size: 0.88 MB
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