Hitachi Econofresh User Manual

INDOOR UNITS SYSTEM FREE SERIES
& Complementary Systems
FSN2(M)(E)
Service Manual
RCI
RCIM
RCD
RPC
RPI
RPIM
RPK
RPF
RPFI
KPI
Econofresh

Hitachi Econofresh Specifications

General

Brand	Hitachi
Model	Econofresh
Category	Air Conditioner
Language	English

Summary

General Information

1.2 Safety

Explains safety symbols, precautions, and warnings for handling and installing the equipment.

Unit Installation

2.1 RCI - 4-way cassette

2.2 RCIM - 4-way cassette (compact)

2.3 RCD - 2-way cassette

2.4 RPC - Ceiling

2.5 RPI(M) - Ducted indoor unit (0.8-6.0)FSN2E(-DU)

2.6 RPI - Ducted indoor unit (8-10)FSN2E

2.7 RPK - FSN2M Wall mounted

2.8 RPF - Floor type, RPFI - Floor concealed type

2.9 KPI energy / heat recovery unit

Piping Work and Refrigerant Charge

3.1 Gas Refrigerant Pipe Selection

Instructions on selecting gas refrigerant pipe sizes, considering outdoor unit compatibility and lubrication.

3.2 Copper Pipes, Sizes, Connection and Insulation

Details copper pipe specifications, connection methods, and proper insulation techniques.

3.3 General Instructions on the Installation of Gas Refrigerant Pipes

3.4 Copper Gas Refrigerant Pipe

Covers principles, dimensions, preparation, bending, brazing, and insulation of copper refrigerant pipes.

3.5 Refrigerant and Drain Hose Installation

Specific instructions for installing refrigerant and drain hoses for various indoor unit types.

3.6 Refrigerant Gas Charge

Guidance on consulting technical catalogues for refrigerant charge requirements based on installation.

3.7 Precautions in the Event of Refrigerant Gas Leaks

Crucial safety information on HFC concentration limits, leak detection, and countermeasures.

Electrical Wiring

4.1 Unit Electrical Wiring and Connection

Covers wiring selection, main switch requirements, and electrical connections for various indoor units.

4.2 Setting of DIP Switches and RSW Switches

Explains the location and functions of DIP and RSW switches for configuring unit operations.

4.3 Wiring Diagrams for the KPI Indoor Units and Complementary Systems

Provides detailed electrical wiring diagrams for KPI indoor units and associated complementary systems.

Control System

5.1 Device Control System

Details control logic for compressor, fans, expansion valves, and solenoid valves in various operating modes.

5.2 Safety Protection and Control

Outlines safety devices like high pressure switches, oil heaters, and fan motor protection mechanisms.

5.3 Standard Control Functions

Test Run

7.1 Checks Prior to the Test Run

Essential pre-operation checks including verification of connections, voltage, and component readiness.

7.2 Test Procedure Using the Remote Control

Step-by-step guide for performing test runs using the wired remote control, including fault identification.

7.3 Test Procedure Using the Wireless Remote Control

Instructions for conducting test runs using the wireless remote control and checking operational status.

7.4 Test Run Check List

A comprehensive checklist for verifying all installation and operational aspects of the system.

Troubleshooting

8.1 Self-check of the Indoor Unit PCB (for RPK only)

8.2 Electronic Expansion Valve Check Procedure

Steps to check the electronic expansion valve's operation, temperature rise, and fault conditions.

8.3 Procedure for Checking Fan Motors in Indoor Units

Servicing

10.1 RCI - 4-way Cassette (1.0-6.0)FSN2E

10.2 RCIM - 4-way Cassette (1.0-2.0)FSN2 (compact)

10.3 RCD - 2-way Cassette

10.4 RPI - Ducted Indoor Unit

10.5 RPI-(8.0-10.0)FSN2E - Ducted Indoor Unit

10.6 RPIM - Ducted Indoor Unit

10.7 RPC - Ceiling

10.8 RPK - FSN2M Wall mounted

10.9 RPF(I)- (1.0-2.5)

10.10 KPI

Electrical Checks of the Main Parts

11.1 Thermistor

11.2 Electronic Expansion Valve

Procedures for checking electronic expansion valve voltage, coil resistance, and operational parameters.