Midea M2OA-18HRN1, Technical & Service Manual

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8 Electronic function 
8.1     Electric Control working environment 
8.1.1  input voltage: 175~253V 
8.1.2  Input power frequency:50Hz 
8.1.3 Ambient 

temperature: 

-7

°

C~+43

°

C 

8.1.4  Indoor fan normal working amp is less than 1A, 
8.1.5  Outdoor fan. Normal working amp is less than 1.5A 
8.1.6  Four-way valve normal working amp is less than 1A. 
8.1.7  Swing motor: DC12V. 
 
8.2 Display 

board 

  Signal receptor

1

22

3

4

5

8.2.1 AUTO indicator 
        This indicator illuminates when the air conditioner is in AUTO operation. 
8.2.2 TIMER indicator 
        This indicator illuminates when TIMER is set ON/OFF. 
8.2.3 PRE.-DEF. Indicator (For Cooling & Heating models only) 

This indicator illuminates when the air conditioner starts defrosting automatically or when 

the warm air control feature is activated in heating mode. 

8.2.4 TEMPERATURE indicator 

a) Usually it displays the temperature settings. When change the setting temperature, this 
indicator begins to flash, and stops 20 seconds later.   
b) It displays the room temperature when the air conditioner is in FAN only operation.   
c) When the unit stops operation, it returns to original factory settings. 
d) Displays the malfunction code or protection code. 

8.2.5 OXYGEN GENERATOR indicator (Optional) 
          This indicator appears only when the Oxygen Generatorr is in operation.(Optional) 
 
8.3 

Proper symbols and their meanings 

TA: Indoor ambient temperature 
TE: Indoor evaporator temperature 
TS: Setting temperature through the remote controller 
TE1: Anti-cold wind, from Fan Off to Breeze temperature 
TE2: Anti-cold wind, from Breeze to Setting Fan Speed temperature 
TE3: Anti-cold wind, from Setting Fan Speed to Breeze temperature 
TE4: Anti-cold wind, from Breeze to Fan Off temperature 
TE5: Evaporator low temperature protection entering temperature 
TE6: Evaporator low temperature protection restoring temperature