Midea MTB1T-96CWN1 Technical & Service Manual page 88

Midea R410A T3 50Hz Top-discharge Series
11.4 Trouble shooting (The Duct Type)
No.
All lamps flashing at 5Hz
1
Timer lamp flashing at
2
Operation lamp flashing
3
Defrosting lamp flashing
4
Alarm lamp flashing at
5
Operation lamp and timer
6
lamp flashing at 5Hz
11.5 Trouble shooting (The Floor-standing Type)
No. Display content
1
2
3
4
5
87
Display
The PRO terminal on PCB of indoor unit without connected to Null line, or
optical coupler on PCB malfunction
Room temperature sensor malfunction.
5Hz
Evaporator temperature sensor malfunction.
at 5Hz
Condenser temperature sensor malfunction.
at 5Hz
Water-level checking malfunction.
5Hz
EEprom malfunction
Fault or protection meaning
E0 EEprom error
E1 T1, room temperature sensor, fault of open circuit, short circuit.
E2 T2, pipe temperature sensor, fault of open circuit, short circuit.
P1 Under cooling mode, T2 is on low temperature protection.
P2 Under heating mode, T2 is on high temperature protection.
Fault or protection meaning
MCAC-UTSM-201707