Table Of Contents - Hitachi FSG Series Service Manual

CONTENTS
1. TROUBLESHOOTING
1.1. INITIAL TROUBLESHOOTING.............................................................................................................. 1-1
1.1.1. ROTARY SWITCH AND DIP SWITCH SETTING .......................................................................... 1-1
1.1.2. CHECKING OF ELECTRICAL WIRING ......................................................................................... 1-5
1.1.3. CHECKING BY 7-SEGMENT DISPLAY......................................................................................... 1-6
1.1.4. EMERGENCY OPERATION WHEN INVERTER COMPRESSOR IS DAMAGED ......................... 1-7
1.1.5. FAILURE OF POWER SUPPLY TO INDOOR UNIT AND REMOTE CONTROL SWITCH............ 1-8
1.1.6. ABNORMAL TRANSMISSION BETWEEN REMOTE CONTROL SWITCH AND INDOOR
UNIT............................................................................................................................................... 1-9
1.1.7. ABNORMALITIES OF DEVICES.................................................................................................. 1-10
1.2. TROUBLESHOOTING PROCEDURE ................................................................................................. 1-18
1.2.1. ALARM CODE TABLE ................................................................................................................. 1-18
1.2.2. TROUBLESHOOTING BY ALARM CODE ................................................................................... 1-19
1.2.3. TROUBLESHOOTING IN CHECK MODE BY REMOTE CONTROL SWITCH ............................ 1-62
1.2.4. SIMPLE CHECKING BY 7-SEGMENT DISPLAY......................................................................... 1-68
1.2.5. FUNCTION OF RSW, DSW AND LEDS ...................................................................................... 1-76
1.3. PROCEDURE OF CHECKING EACH MAIN PARTS .......................................................................... 1-82
1.3.1. SELF CHECKING OF PCBS USING REMOTE CONTROL SWITCH.......................................... 1-82
1.3.2. SELF-CHECKING OF REMOTE CONTROL SWITCH ................................................................ 1-84
1.3.3. SELF-CHECKING OF INDOOR UNIT PCB ................................................................................. 1-86
1.3.4. SELF - CHECKING OF 7 - DAY TIMER (PSC-3T)....................................................................... 1-88
1.3.5. SELF - CHECKING OF CENTRAL STATION (PSC-3S1) ............................................................ 1-89
1.3.6. PROCEDURE OF CHECHING OTHER MAIN PARTS ................................................................ 1-90
1.4. TEST RUN.......................................................................................................................................... 1-101
1.4.1. TEST RUN MODE REMOTE CONTROL SWITCH.................................................................... 1-101
1.4.2. TEST RUN FROM OUTDOOR UNIT SIDE ................................................................................ 1-102
1.4.3. CHECKING LIST (FSG AND FS3 SERIES)............................................................................... 1-103
2. SERVICING
2.1. OUTDOOR UNIT.................................................................................................................................... 2-1
2.1.1. REMOVING AIR INTAKE GRILLE ................................................................................................. 2-1
2.1.2. REMOVING FRONT SERVICE PANEL ......................................................................................... 2-1
2.1.3. REMOVING FAN GUARD NETS ................................................................................................... 2-1
2.1.4. REMOVING OUTDOOR FAN ........................................................................................................ 2-2
2.1.5. REMOVING COMPRESSOR (RAS-5FSG AND FS3)................................................................... 2-3
2.1.6. REMOVING COMPRESSORS (RAS-8FSG, RAS-10FSG, RAS-16FSG, RAS-20FSG,
RAS-8FS3, RAS-10FS3, RAS-16FS3 AND RAS-20FS3) .............................................................. 2-5
2.1.7. REMOVING HIGH PRESSURE SWITCH, HIGH PRESSURE SENSOR AND LOW
PRESSURE SENSOR ................................................................................................................... 2-7
2.1.8. REMOVING COIL FOR REVERSING VALVE ............................................................................... 2-9
2.1.9. REMOVING COIL FOR SOLENOID VALVE .................................................................................. 2-9
2.1.10. REMOVING THERMISTOR FOR LIQUID PIPE............................................................................. 2-9
2.1.11. REMOVING REVERSING VALVE ............................................................................................... 2-10
2.1.12. REMOVING ELECTRICAL COMPONENTS ................................................................................ 2-11
2.2. IN-THE-CEILING TYPE (MODELS: RPI-0.8FSGE, RPI-1.0FSGE, RPI-1.5FSGE,
RPI-2.0FSGE, RPI-2.5FSGE, RPI-3.0FSGE, RPI-4.0FSGE AND RPI-5.0FSGE)................................ 2-12
2.2.1. REMOVING PRINTED CIRCUIT BOARD (PCB) ......................................................................... 2-12
2.2.2. REMOVING INDOOR FAN MOTOR ............................................................................................ 2-13
2.2.3. REMOVING THERMISTORS FOR LIQUID PIPE AND GAS PIPE .............................................. 2-14
2.2.4. REMOVING FLOAT SWITCH ...................................................................................................... 2-14
CONTENTS
1