Midea V8 VRF Series - Page 79

V8 VRF Indoor Units
78
Midea
V8
Series VRF Indoor Units
6.1.31 dE2 - PM2.5 sensor fault
Error display
Digital display
Display position
Panel, display box, and wired controller
Error impact
The faulty IDU and other IDUs of the same system: operate normally.
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
dE2
Cause 3: The IDU main control board
is damaged
Cause 4: If the error cannot be cleared
after causes 1/2/3 have been
eliminated, the PM2.5 sensor is
damaged
Replace the main
control board of the
IDU
Replace the PM2.5
sensor (1)
Cause 1: The communication cable
between the PM2.5 sensor and the
sensor control board becomes
disconnected or short circuited
Replace the
communication
cable and properly
connect the cable
Cause 2: The communication cable
between the PM2.5 sensor and the
adapter board has become loose
Connect the cable
properly
Note:
1. If the PM2.5 sensor is integrated with the sensor control board, making disassembly difficult, then replace
the sensor control board directly.