HVAC 24 RECEIVER DRIER (R.D) ,W¶V D VWRUDJH GHYLFH IRU OLTXLG UHIULJHUDQW and has three main functions. i) It absorbs the moisture in the refrigerant. ii) It allows only liquid (high pressure liquid) to pass through to the TXV. iii) It keeps a reserve of refrigerant to accommodate fluctuating refrigerant requirements. 10.1.5.6 THERMISTER OR THERMO SENSOR NOTE To remove thermister from the HVAC unit, the HVAC assembly needs to be dismantled. It is a temperature sensing device, which is positioned at the coldest point of the evaporator (as shown in the fig below). The control unit switches OFF the compressor at a temperature when condensed water tends to form ice on the fins of evaporator. Thus it maintains the evaporator temperature within a specified range. THERMISTER POSITION ON EVAPORATOR The thermister bulb should be fixed such that the sensing bulb is right over the point as shown figure above. ! CAUTION The point indicated above is the location of the sensing bulb and not the point where clip has to be inserted. Any minor change in position of the evaporator can lead to malfunctioning of the HVAC system. PIN OUT CONNECTION DETAILS PIN NUMBER CONNECTION 1 Sensor +ve 2 Sensor -ve NOTE
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