Midea MSV1-09HRDN1, Service Manual

Service manual 

11.7.3 Defrosting Actions: 

                                                          max. 10 minutes   
                                      60s 
                          ON                10s                                            30s             
      Com.                                                                                OFF 
                          ON                                                                                ON 
      4 way valve                                          OFF 
                          ON                                                                                ON 
   Outdoor fan                     OFF 
                          ON                                                                                ON 
   Indoor fan           
                OFF 

Breeze 10 seconds, then stop                                 

11.7.4  Rated capacity test 

Set mode to cooling mode 
Set temp. to 30 °C 
Set fan speed to high speed 
Push turbo button 5 times in 10 seconds. 
Using special remoter controller   
After 5 hours, cancel rated capacity test 

11.8. Outdoor low temperature protection (optional) 

Factory standard unit has not this function.   
Unit stops when outdoor temp. is low than -15°C and lasting time more than 60 minutes, and unit runs 
again when outdoor temp. more than -12°C. 
When indoor PCB J1 jump is on, this function is available.   

11.9. Automatic operation mode   

The air conditioner automatically selects one of the following operation modes: cooling, heating or fan 
only according to the temp. difference between room temp. (TA) and set temp. (TS). 

TA—TS Operation 

mode 

TA—TS>2

℃

 Cooling 

-1

℃

≤

TA-TS

≤

+2

℃

 Fan-only 

TA-TS<-1

℃

Heating (air-only for cooling only type) 

11.10. Manual switch  

11.10.1 

Mode changes when push this button . 

Cooing mode  Auto mode Unit off  Cooing mode 

11.10.2 

At Cooing mode, after 30 minutes cooling operation whose fan speed is set as low, the A/C 

operates with a setting temp. of 24

℃

. 

11.10.3 

At auto mode, the A/C operates with a set temp. of 24

℃

11.11. Timer Function  

11.11.1 

The maximum length of timer is 24 hours and the minimum resolving power is 15 minutes. 

11.11.2 

Timer on: first turn off the A/C, the A/C will be automatically on at the set time. 

11.11.3 

Timer off: first turn on the A/C, the A/C will be automatically off at the set time 

11.11.4 

Timer on/off function( on time is earlier than off time): first turn off the A/C, it will be 

automatically on at set time, and later be off at the set time, then unit turns on at set time. 

11.11.5 

Timer off/on function( off time is earlier than on time): first turn on the A/C, it will be 

automatically off at set time, and later be on at the set time, then unit turns off at set time. 

11.12. Sleep mode 

11.12.1 

It is available at cooling, heating or auto mode. 

11.12.2 Cooling: 

The set temperature rise 1

℃

  per hour. Two hours later, the set temperature will maintain as a constant 

and the fan speed is kept at low speed. 

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