Protection Function - Midea MPM1-10CEN1-BB6 Technical & Service Manual

8.4

Protection function

8.4.1 Time delay safety control (3 minutes).
When the compressor is stopped by the remote controller, it restarts after 3 minutes when the
remote controller is turn ON.
When the setting temperature is reached during cooling operation, the compressor stop and it
will not start for 3 minutes.
If the auto-restart is available, the compressor only needs to delay time and start the machine
in 1 minute.
8.4.2 Anti-freezing protect control
If the temperature of the indoor evaporator falls continuously below 2'C (65'F) for 3 minutes or
more, the compressor turn off to protect the indoor evaporator from freezing.
Compressor will restart again when the indoor evaporator temperature rises to 10'C.
See the below graph:
T2
t t
10'C
50'F
2'C
35.6'F
At the anti-freezing control, the pump 1 and pump 2 maintain the origin state. If the mode
change to Fan or Heat mode, the time delays safety control cancel. If turn back to cooling
mode, timing again.
8.4.3 Overheat protect
At cooling or dry mode, the unit state is ON.
8.4.3.1 If the water level is being the WL1 above, and the T3≥63'C for 3 seconds continuously.
The inner fan motor will be force to low wind and outer fan motor will be force to high
wind. If the T3≤57'C, the unit fan motor back to the origin state that setting by customer.
See the below graph:
Note: The over-heat protect have priority to the WL protect.
16
Recovery
3min
Comp. off
Electronic function