... vehicle/truck; ISO9001,TS16949 Quality Assurance,SQ/DENSO; Manual knob type; Attractive design CG220212 air conditioning control board ... internal climate control of construction vehicle. Main function : manual operation,cool,heating,fresh air,error alarm,air-flow regulate ... . of return air inlet, the defrost sensor controls defrost temp., defrost on at 2°c, defrost off at 4°cConnectorPlug DJ7081B-6. ...