Ebike controller sounds rough

Parsons

Pedelecer
Jul 11, 2018
193
13
50
Hi guys in the pic is 2 controllers both 1500w 40amp.both use sw900
The top one is my Voldemort runs smooth and quiet but never got the pedal assist to work I think there's a fault with all their controllers but now I want one with pedal assist function to save on my battery instead of throttle all the time.
The bottom one is new I've connected all up checked all the connections all senses phase wise but is running like a bag of s*** and very noisy any idea guys what it could be
 

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