Hitachi RAS-4.0UFESNH1 - Table of Contents

Table of Contents
1. Option list ...............................................................................................................................................1
1.1 Wired remote controller ...............................................................................................................1
1.2 Wireless remote controller ..........................................................................................................10
1.3 IR Receiver .................................................................................................................................15
2. Troubleshooting....................................................................................................................................16
2.1 Trouble guide...............................................................................................................................16
2.2 Fault codes .................................................................................................................................21
3. Checking components .........................................................................................................................30
3.1 Check refrigerant system............................................................................................................30
3.2 Check parts unit .........................................................................................................................32
4.
Disassembly and assembly for compressor and motor ......................................................................3
6
5.
Control logic description .....................................................................................................................46
5.1 Fan only mode
............................................................................................................................46
5.2 Cooling mode..............................................................................................................................46
5.3 Heating mode ............................................................................................................................47
5.4 Auto mode ..................................................................................................................................4
8
5.5 Evaporator low-temperature protection ......................................................................................48
5.6 Condenser high-temperature protection.....................................................................................49