Table of Contents
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HITACHI UTOPIA SERIES
INVERTER-DRIVEN SPLIT-SYSTEM
HEAT PUMP AIR CONDITIONERS
- DC Inverter UTOPIA for Europe -
Models
Indoor Units
• In-the-Ceiling Type
RPI-2.5HRG
RPI-4.0HRG
RPI-3.0HRG
RPI-5.0HRG
• 4-Way Cassette Type
RCI-2.5HRG
RCI-4.0HRG
RCI-3.0HRG
RCI-5.0HRG
• 2-Way Cassette Type
RCD-2.5HRG
RCD-4.0HRG
RCD-3.0HRG
RCD-5.0HRG
• Ceiling Type
RPC-2.5HRG
RPC-4.0HRG
RPC-3.0HRG
RPC-5.0HRG
Outdoor Units
RAS-3HVRG
RAS-4HVRG
RAS-5HVRG
P5413554
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Table of Contents
Troubleshooting
Related Manuals for Hitachi Utopia RAS-5HVRG
Summarization of Contents
Troubleshooting
Initial Troubleshooting
Covers initial checks like rotary switch, dip switch settings, and electrical wiring.
Troubleshooting Procedure
Details troubleshooting steps using alarm codes and check modes.
Procedure of Checking Each Main Parts
Guides on self-checking PCBs and remote control switches.
Servicing
Outdoor Unit
Step-by-step procedures for disassembling and servicing the outdoor unit components.
Main Parts
Inverter
Specifications and arrangement details for the inverter power unit.
AC Chopper
Details on the AC Chopper, its specifications, and control features.
Auto-Louver Mechanism
Explanation of auto-louver operation for 4-way, 2-way, and ceiling cassette types.
Scroll Compressor
Information on scroll compressor structure, principle, and reliable mechanisms.
Thermistor
Positioning and characteristics of thermistors used in indoor and outdoor units.
Electronic Expansion Valve
Specifications and wiring for electronic expansion valves in outdoor and indoor units.
High Pressure Switch and Pressure Switch for Control
Function and operation of high pressure and control pressure switches.
Field Work Instruction
Overheating in Case of Using PC-5H
Troubleshooting steps for overheating issues when using PC-5H remote controller.
Alarm 36
Guidance for Alarm code '36' concerning incorrect indoor/outdoor unit combinations.
Select Guide of Drain Pipe for Indoor Unit
Guidelines for selecting drain pipe diameter based on flow volume and slope.
Maintenance Work
Routine maintenance checks for indoor and outdoor units.
Service & Maintenance Record by 7-Segment Display
Record sheet for service data collected via the 7-segment display.
Service & Maintenance Record by Remote Control Switch
Record sheet for service data collected via the remote control switch.
Service & Maintenance Record
General service and maintenance record checklist for technicians.
Electrical Wiring Diagrams
Electrical Wiring Diagram (for models: RCI-1.5~5.0FSG2Ei)
Detailed electrical wiring diagram for RCI-1.5 to 5.0FSG2Ei models.
Electrical Wiring Diagram (for models: RCD-1.5~3.0FSG2)
Electrical wiring diagram for RCD-1.5 to 3.0FSG2 models.
Electrical Wiring Diagram (for models: RCD-4.0~5.0FSG2)
Electrical wiring diagram for RCD-4.0 to 5.0FSG2 models.
Electrical Wiring Diagram (for models: RPC-2.0~5.0FSG2Ei)
Electrical wiring diagram for RPC-2.0 to 5.0FSG2Ei models.
Electrical Wiring Diagram (for models: RPI-1.5~5.0FSG2Ei)
Electrical wiring diagram for RPI-1.5 to 5.0FSG2Ei models.
Electrical Wiring Diagram (for models: RPI-2.0~5.0FSG2Ei)
Electrical wiring diagram for RPI-2.0 to 5.0FSG2Ei models.
Electrical Wiring Diagram (for models: RPK-1.5~2.0FSG2M)
Electrical wiring diagram for RPK-1.5 to 2.0FSG2M models.
Electrical Wiring Diagram (for models: RPF(I)-1.5/2.5FSG2Ei)
Electrical wiring diagram for RPF(I)-1.5/2.5FSG2Ei models.
Electrical Wiring Diagram (for models: RAS-3/4HVRG)
Electrical wiring diagram for RAS-3/4HVRG models.
Electrical Wiring Diagram (for models: RAS-5HVRG)
Electrical wiring diagram for RAS-5HVRG models.
Refrigerant Cycle
Refrigeration Cycle Single Type
Diagram illustrating the refrigeration cycle for single type systems.
Refrigeration Cycle Twin Type
Diagram illustrating the refrigeration cycle for twin type systems.
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