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-   -   Trying to figure out how to program fan control on MSPNP2 (https://www.miataturbo.net/megasquirt-18/trying-figure-out-how-program-fan-control-mspnp2-97499/)

Goldwar 07-15-2018 05:37 PM

Trying to figure out how to program fan control on MSPNP2
 
1 Attachment(s)
So I'm trying to have my condenser fan on when my radiator fan comes on on a 1996 NA. I found that there are separate wires that ground side switch the rad condenser and a/c clutch separately or at least they all have a different pins at the computer.
So the ALED controls the fan temp for the radiator fan but i don't how to setup the control for the condenser fan without hard wiring it? PLZ help...

Stealth97 07-15-2018 09:39 PM

Should just be a matter of finding which output switches it on, and setting that output to switch as a function of CLT. It’s been awhile since I messed with MS2, but the output should be in MSPNP documtation

Goldwar 07-16-2018 10:39 AM

Yeah i read through the documentation and cant find which port just the condenser fan ties to and how to switch it on without running a new wire.

Stealth97 07-16-2018 01:33 PM


Originally Posted by Goldwar (Post 1491624)
Yeah i read through the documentation and cant find which port just the condenser fan ties to and how to switch it on without running a new wire.


does it come on with A/C?if so you should not need to run any new wires.

Goldwar 07-16-2018 03:42 PM

yes came with factory a/c but i dont know what output mega squirt uses for the condenser fan?

acedeuce802 07-16-2018 04:40 PM

MegaSquirtPNP by DIYAutoTune.com

At the bottom. WLED.

Goldwar 07-16-2018 09:11 PM

Thanks I was looking at MSPNP Gen 2 manual not install guide. the WLED still doesn't come on with the other fan with the parameters set the same as ALED and tried it at a lower temp then ALED Still wont come on but is on switched with the a/c clutch So fan control works. Is there a jumper or something that could be wrong?

Goldwar 07-16-2018 11:47 PM

Update: The control side for the ac/ clutch and condenser fan are connected internal or external of the computer . I believe in the computer because the diagram I have has them separated to the computer. So I think if I connect the rad fan control with condenser fan control wires then it will work as long as i put a diode in between the spice and the Computer. When the rad fan activates it activate the condenser fan relay without turning on the a/c compressor clutch and added bonus when the a/c is activated both fans will run as well because of the the diode direction. What do you guys think?

cpierr03 07-19-2018 09:56 PM

Pulse your I/O outputs in Output test mode to figure out what triggers your condenser fan. Then, set a condition for the condenser fan to turn on in programmable outputs. Ideally, at a higher temp than your rad fan, so your electrical system doesn't get overloaded at once.


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