Midea V8 VRF Series

V8 VRF Indoor Units
87
Troubleshooting Guide
6.1.39 P71 - Main control board EEPROM fault
Error display
Digital display
Display position
Panel, display box, and wired controller
Error impact
The faulty IDU stops. Other IDUs of the same system: operate normally.
ODU of the same system: operate normally.
Error trigger
When the master chip cannot receive data from EEPROM (EEPROM: a non-volatile memory whose
data are kept even when powered off)
Error recovery
Automatic recovery
Possible cause
 The IDU main control board is damaged.
 External interference (such as noise and electromagnetic)
Troubleshooting
P71
Is the fault cleared?
Replace the main control
board of the IDU
The main control board
of IDU is normal and
subject to external
interference (such as
noise and
electromagnetic)
Yes
No
Power off and then
power on the IDU