5.3.1 Cooling operation .......................................................................................................................................... 80

5.3.2 Dry operation ................................................................................................................................................. 82

5.3.3 Heating operation .......................................................................................................................................... 84

5.3.4 Automatic cooling and heating operation ...................................................................................................... 86

5.3.5 Defrost operation control ............................................................................................................................... 87

5.4

Standard control functions..................................................................................................................... 89

5.4.1 Freezing protection during cooling process or dry operation ........................................................................ 89

5.4.2 Prevention control for excessively high discharge gas temperature ............................................................. 90

5.4.3 Activation for protection device control .......................................................................................................... 91

5.4.4 Preheating control of compressor ................................................................................................................. 92

5.4.5 Prevention control for high pressure increase during cooling operation ....................................................... 92

SMGB0091 rev.2 - 11/2015

5 .

C o n t r o l s y s t e m

Table of Contents