Sinclair SDV 6 Service Manual page 101

8.1.32 dE2 - PM2.5 sensor fault
Error display
The faulty IDU and other IDUs of the same system: operate normally.
Error impact
ODU of the same system: operate normally.
Error trigger
If the main control board of an IDU has lost communication with PM2.5 sensor for 2 min
Error recovery
Automatic recovery
Possible cause
See the Troubleshooting section.
Troubleshooting
Note:
1. If the PM2.5 sensor is integrated with the sensor control board, making disassembly difficult, then replace
the sensor control board directly.
98
Digital display
Cause 1: The communication cable
between the PM2.5 sensor and the
sensor control board becomes
disconnected or short circuited
Cause 2: The communication cable
between the PM2.5 sensor and the
adapter board has become loose
dE2
Cause 3: The IDU main control board
Cause 4: If the error cannot be cleared
after causes 1/2/3 have been
eliminated, the PM2.5 sensor is
Panel, display box, and wired controller
is damaged
damaged
Display position
Replace the
communication
cable and properly
connect the cable
Connect the cable
properly
Replace the main
control board of the
IDU
Replace the PM2.5
sensor (1)