Service manual

SiENBE12-522A

Table of Contents v

5.20 Thermistor or Related Abnormality (Outdoor Unit)...............................232

5.21 Electrical Box Temperature Rise..........................................................234

5.22 Radiation Fin Temperature Rise ..........................................................236

5.23 Output Over Current Detection.............................................................238

5.24 Insufficient Gas.....................................................................................240

5.25 Low-voltage Detection..........................................................................242

5.26 Anti-icing Function in Other Rooms / Unspecified Voltage (between Indoor

and Outdoor Units)243

6. Check ..................................................................................................244

6.1 How to Check .......................................................................................244

Part 7 255

Removal Procedure255

1. Outdoor Unit (80 / 90 Class) ...............................................................256

1.1 Removal of Outer Panels .....................................................................256

1.2 Removal of Propeller Fans...................................................................259

1.3 Removal of Electrical Box ....................................................................260

1.4 Removal of PCB...................................................................................267

1.5 Removal of Fan Motor..........................................................................270

1.6 Removal of Electronic Expansion Valve and Thermistor .....................272

1.7 Removal of Sound Blanket and Reactor ..............................................273

1.8 Removal of Shunt.................................................................................275

1.9 Removal of Solenoid Valve and Four Way Valve.................................276

1.10 Removal of Compressor.......................................................................278

2. Outdoor Unit (50 / 52 / 58 / 68 / 75 Class) ..........................................280

2.1 Removal of Outer Panels .....................................................................280

2.2 Removal of Electrical BOX ...................................................................281

2.3 Removal of PCB...................................................................................285

2.4 Removal of Fan Motor..........................................................................288

2.5 Removal of Sound Blanket...................................................................289

2.6 Removal of Four Way Valve Coil, Solenoid Valve Coil, Electronic Expan-

sion Valve Coil and Thermistor290

2.7 Removal of Four Way Valve, Solenoid Valve and Shunt .....................292

2.8 Removal of Solenoid Valve and Shunt.................................................293

2.9 Removal of Compressor.......................................................................294

Part 8

Others295

1. Others .................................................................................................296

1.1 Test Run from the Remote Controller ..................................................296

1.2 Jumper Settings ...................................................................................297

Part 9

Appendix299

1. Piping Diagrams..................................................................................300

1.1 Indoor Units ..........................................................................................300

1.2 Outdoor Units .......................................................................................305