Help! Yosemite Fatbike (Electric fail, Ananda)

Larsen

Just Joined
Jan 21, 2025
2
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Hello.
I'm new here and Norwegian, so I`ll apologize in advance for stupid questions and for my English,
but I really need the help I can get here.

I have a Yosemite Fatbike (electric) that doesn't work.

The setup on the bike.

Display - Yosemite D15 (Ananda D15, but without the PAS 4 and 5 diodes)

Controller - Ananda MC5-B0

Engine - Bafang RM G060.250.D 10

The display blinks constantly on the PAS 2 diode.
(Don't know if PAS diode 4 or 5 also would have blinked because the display I have don't have those diodes)

My neighbor has the same bike so I borrowed it to troubleshoot with elimination, when I moved his controller to my bike the bike started up straight away but after a few meters it resulted in my bike destroying my neighbors controller too, now that one flashes in the exact same way as mine.

I measured the windings in the motor and between all three wires (green, yellow, blue) the resistance is 0.4 ohms, I have also checked that the hall sensors vary between 0v-5v.

Should there be 3 different measure readings on HALL a/b/c depending on where in the cycle the engine is?
A and C had the same readings at the same time and B had different readings.

I don't see any direct faults or measure anything that makes me think the engine is defective, but I see a bit of corrosion and rust, so it indicates that there has been water there.

My question: Is it possible to fix the controller and motor? Or do I have to get a new motor and controller?

If I have to buy new: Does anybody know where I can get bolt on without the need for customizing? (Soldering wires is no problem)
The only "extra" part on the bike not mentioned here is the PAS sensor, there is no sensor for speed or gas on this system.

Thank you in advance for the help.
 
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