Connecting a fan 4028 to EBB V1.2 in RatOS

i have a 4028 fan connected to my EBB 42 V1.2, and i use RatOS V2.1
i use a inverter from 24v to 12v only for this fan
the fan cables red and black are in pin: PA1
blue is connected to pin: PA3
when i try to use the slider to 100% it is not working
What am I missing here !

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FANS

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Part cooling fan

[fan]
# 2-pin fan connected to 2-pin header on T0 (EBB42 v1.2) - input voltage pwm
enable_pin: PA3
cycle_time: 0.01
Solution
i solved it. it working now #################

FANS

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Part cooling fan

[fan]
enable_pin: toolboard_t0:PD3
cycle_time: 0.00004
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