Bosch IDS BOVB20 Installation Instructions Manual page 32

Installation Instructions
Main Control Board for 48/60 ODU Model
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Figure 55
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Bosch IDS BOVB20 Split System Heat Pump - BTC 761701316 C (02.2022)
Function description
Pressure equalizer valve port
Compressor crankcase heater port
Reversing valve port
Thermostat wire connections
EEV port
Th sensor port
TF sensor port
T3 T4 T3L sensor port
Pressure transducer port
T5 sensor port
Gateway connector
Reserve
Reserve
High pressure switch port
USB port
SW2 FORCE BUTTON
SW3 CHECK BUTTON
J2 Dip SWITCH: Select capacity
SW5 Dip SWITCH:Defrost logic settings
SW4 Dip SWITCH:Control logic settings
Reserve
IC20 ： EEPROM Chip
LED
IC14 ： Drive EEPROM Chip
ECM motor port
Compressor: W port
Compressor: V port
Compressor: U port
Power input
Power input