Technibel iSeries Technical Data & Service Manual page 14

Settings
Jumpers
JP1: Factory use. Default: open.
JP2: Defrost type selection. Default: closed.
JP3: Heating only option. Default: open (heating and cooling).
Dip-switch:
SW1: Factory use. Default: 1=Off, 2=Off.
Note:
Jumper and dip-switch settings can be changed only when unit is powered off.