I am running an e3d toolchanger , Core XY printer with 4 tools. Running latest version of RRF2
The Fan on P6 has not been working for a while now, so after unplugging the board and rewiring it again , I am now no longer getting fan p8 to turn on as well,.
What I am seeing -- when I plug and measure the current from P6 and P8 it is reading in the 23-24V range all the time, even if the tools are not active.
The 2 cooling Fans in P2 and P4 have a Voltage of 0 when not running and ramp up as I slide the fan from the web UI.
I applied a 24v charge to the 2 cooling fans on tools 3 and 4 (P6,P8) and they were spinning ok.
It is when I decided to measure the tools with working fans that I noticed that those had an initial voltage of 0 when powered off and not constant like the other 2.
All the thermostatic fans 1,3,5 and 7 are working fine. When I turn on the hotend the hotend fan will fire up as expected without fail.
Run out of ideas on what else to check -- hoping it may just be a config setting that I may have overlooked.
thx: