Sinclair SDV 6 Service Manual page 108

Figure 1 Schematic diagram of the R32 refrigerant leakage detection system
1-1: Common terminal
Connecting an
2-2: Sending R32 refrigerant leakage signal
alarm or a fan
3-3: Sending sensor module fault signal
1-1/2-2/3-3
AC220V
three-core communication cable
output
(configured on site)
S1 button
Buzzer
Adapter board
Ten-core
communication cable
(configured by factory)
UART protocol
AC220V input
R32 sensor module
IDU main control board Control board for R32 refrigerant detection device
105