Hello friends how are you, I just wanted to contribute that, I have disassembled the 20kg inverter dryer dryer hall sensor, Mod: F2004RDT, very carefully I took out the coating and cut where the connector is below the connector that is attached to the housing of the I made the cut sensor with a cutter, we must be careful with the hands of not cutting, on the same plate the polarity is indicated and it works with 12v.cc. There are 2 resistors of 680ohms, SMD mount, would be R025 and R015 measured and were open without circuit or cut, replace them with 2 of the same value 1/4 of common Watts.
And continuing with the same as I am new I can not upload video. I did with a tester that I took from the internet and at least it was working. I want that for me it's a double hall sensor on the board says: GND, VCC, Sa, Sb these last two are the signal outputs. Sorry if I explain more, I'll correct it.