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
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
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
Parts List and Diagram
88
- Parts List
  89
- Outdoor Unit Diagram
  90
- Outdoor Unit Parts List
  91

Hitachi RAC-50YH7 Service Manual (103 pages)

Brand: Hitachi | Category: Air Conditioner | Size: 14.1 MB

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
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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