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The characteristic that resistance value reduces as the temperature increases is deemed to have
negative slope or negative temperature coefficient (NTC), and such thermistor is called as NTC
thermistor. The resistance value changes sensitively with temperature and typically changes 7% ~
3% per degree centigrade. Sensor used in the refrigerator is NTC thermistor.
There is following computing formula for the sensor:
Sampling voltage / reference voltage = R1 / (RNTC + R1)
AD value / reference AD value = R1 / (RNTC + R1)
The reference voltage is 5V, RNTC is the resistance value of the sensor, R1 is R31\R32\R33 in
schematic diagram that is 5.1K
10.4
Fan motor circuit of the freezing chamber
The fan in the freezing chamber is running when the compressor is operating. Check 12V and
Содержание HS-338FWEN-W
Страница 1: ...MODEL HS 338FWEN W Instruction Manual Upright Freezer...
Страница 2: ......
Страница 6: ...1 1 Safety Warning Code 1 1Warning for operation safety...
Страница 7: ...2...
Страница 8: ...3...
Страница 9: ...4 1 2Safety instruction for refrigerant...
Страница 35: ...30 11 Troubleshooting Method 11 1 No refrigeration...
Страница 36: ...31 11 2 Compressor failure 11 3 Defrosting is not working...