F05 fault after replacing brushes
F05 - NTC failure (SC/OC)
All appliances managed by the electronics measure the temperature using a thermistors. These thermistors changes resistance depending on the temperature. There are two kinds of thermistors, NTC and PTC.
NTC has a negative temperature coefficient which means that with increasing temperature the resistance decreasing (used in washing machine, dishwasher, dryer, refrigerator....etc).
PTC has a positive temperature coefficient which means that with increasing temperature the resistance increasing (used in oven, refrigerator for starting compressor...etc).
If you look in the table below, it is clear that the resistance value of 100 ohm means that is NTC faulty. So, I really do not understand how it is possible that the resistance increases with temperature?
Resistance of NTC depending on temperature
0 °C 35.9 kohm
30 °C 9.8 kohm
40 °C 6.6 kohm
50 °C 4.6 kohm
60 °C 3.2 kohm
70 °C 2.3 kohm
95 °C 1.1 kohm
Dado
×