Hitachi RAM-90QH5 Manuals

Manuals and User Guides for Hitachi RAM-90QH5. We have 2 Hitachi RAM-90QH5 manuals available for free PDF download: Service Manual, Information Booklet & User Manual

Hitachi RAM-90QH5 Service Manual (84 pages)

OUTDOOR UNIT

Brand: Hitachi | Category: Air Conditioner | Size: 25.59 MB

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
Grounding of the Working Table
4
Grounding a Soldering Iron
4
Caution
5
Specifications
6
Installation
17
Construction and Dimensional Diagram
21
Wiring Diagram
22
- Compressor Motor Specifications
  23
- Fan Motor Specifications
  24
Main Parts Component
24
- Circuit Diagram - Remote Control
  25
- Circuit Diagram - Model RAM-90QH5
  26
Block Diagram
27
- Basic Mode
  28
- Basic Cooling Operation
  30
- Cooling Sleep Operation
  31
- Cooling Defrost
  31
- Dehumidifying
  32
- Dehumidifying Sleep Operation
  32
- Heating Basic Operation
  33
- Heating Sleep Operation
  34
- Expansion Valves
  35
- Compressor Rotation Speed
  35
- Defrost
  36
- Time Chart When Executing Defrost (Unit 1 and Unit 2 Operated, Unit 3, Unit 4 and Unit 5 Stopped)
  37
- Auto-Fresh Defrost
  38
- Forced Cooling
  39
- Pocessing at Overheat Thermistor (OH) High Temperature
  40
- Restriction Start Conditions
  40
- Restriction Release Condition (in Common for All)
  40
Refrigerating Cycle Diagram
42
- Power Circuit
  43
- Intelligent Power Module (IPM)
  43
- Active Module, Diode Stacks
  43
Description of Main Circuit Operation
43
Trouble Shooting
74
Parts List and Diagram
80

Hitachi RAM-90QH5 Information Booklet & User Manual (68 pages)

Monozone/Multizone, Summit, Monoduct, Bigflow, Air Exchanger, Room Air Conditioner

Brand: Hitachi | Category: Air Conditioner | Size: 8.35 MB

Indoor Units
7
Features and Benefits
8
High Performance
9
Outdoor Units
24
Air Exchanger
62

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Hitachi RAM-90QH5 Manuals

Hitachi RAM-90QH5 Service Manual (84 pages)

Table of Contents

Hitachi RAM-90QH5 Information Booklet & User Manual (68 pages)

Table of Contents

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