Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406
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9.4 Duct type indoor unit malfunction and protection codes
Names of indicators in receiving kit (When selecting remote controller)
Fault or protection meaning
Timer lamp flashing
or show [E1]
Communication error between indoor and outdoor unit.
Operation lamp flashing
or show [E2]
T1, room temperature sensor error.
Operation lamp flashing
or show [E3]
T2, pipe temperature sensor error.
Operation lamp flashing
or show [E4]
T2B, temperature sensor error.
Timer lamp flashing slowly
or show [E6]
Defrost lamp flashing slowly
or show[E7]
Alarm flashing slowly or
show [Ed]
Notes: the LED error code display is also available for weekly wired controller.