Quietside QSVMI-09A, Service Manual

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Controller Function Manual and Operating Method

Controller Function

The unit for temperature is centigrade in this function manual. If there's Fahrenheit, the transition relation is 

TFahrenheit =TCentigrade  1.8+32.  

Temperature Parameter

Indoor ambient temperature (T

amb.

) 

Indoor copper tube temperature (T

tube

) 

Evaporator inlet pipe temperature (T

inlet pipe

) 

Evaporator outlet pipe temperature (T

outlet pipe

) 

System Basic Functio

n

2.1 Cooling Mode 

(1) Fan motor and swing works under setting status 

(2) Indoor unit will run under the original status when outdoor unit malfunction or stop to run protection, malfunction 

displays. 

(3) The fan motor stops when the modes conflicts. 

      The temperature setting range is 60.8-86  under the mode. 

2.2 Dry Mode 

(1) Fan motor runs under low speed, swing runs by setting status. 

(2) Indoor unit will run under the original status when outdoor unit malfunction or stop to run protection, malfunction 

displays. 

      The temperature setting range is 60.8-86  under the mode. 

2.3 Fan Mode 

In this mode, only indoor fan is running at setting status. Under auto fan speed, it will run by cooling auto fan. 

2.4 Heating Mode 

(1) The indoor unit goes to anti-cool wind when the unit is ON; it goes to blow residual heat when the unit is OFF and

indoor fan motor was ON before. 

(2) Protection function, compressor is OFF as malfunction (including any temperature sensor malfunction), indoor fan

motor runs with blowing residual heat. 

(3) Anti-cool wind: indoor fan motor runs after 2 minutes delayed. 

      Blow residual heat: the indoor unit runs 60S with the original fan speed then stop; the fan speed cannot shift and

the guide board changes to the heating minimum angle when blowing residual heat. 

(4) Indoor fan motor stops and does not blow residual under defrost and oil return; the temperature sensor of indoor

unit cannot be inspected during defrost, oil return and exit in 3min process. 

      The temperature setting range is 60.8-86  under the mode. 

2.5 Auto Mode 

In this mode, the unit will select the cooling, heating running mode or fan mode automatically according to the change

of ambient temperature. Protection function is the same as that in heating, cooling mode. 

2.6 Mode Clash 

When the indoor receiving the information mode clash from outdoor unit and the digit is 1, the indoor load (indoor fan

motor, swing) stops, the malfunction indicator displays, the mode send to outdoor unit is the mode receiving by remote 

control.  

When the time of TIMER ON reach, if the indoor receiving the information mode clash from outdoor unit and the digit is 

1, the indoor load (indoor fan motor, swing) stops, the malfunction indicator displays, the mode send to outdoor unit is 

the mode receiving by remote control. 

3. Others 

3.1 Buzzer 

   When the controller energized, receiving signal from remote controller and auto button, the buzzer will give out

beep. 

3.2 Auto Button 

      Press the button when turn off the unit, the unit runs by auto mode, indoor fan motor runs under auto fan speed, 

turn on swing. Press auto button under the unit is ON, it will OFF. 

3.3 Auto Fan Speed Control 

   Under cooling, heating, fan mode, the indoor fan motor will select the high, med, low fan speed automatically 

according to the change of ambient temperature, the auto fan speed is low speed under FAN mode. The spacing of

shift each fan speed is 3.5 min. 

3.4 Sleep 

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