Dif dual fan controller over heating?

[S14Driftr91]

Has anyone ever had this controller overheat?

I have a DIF version d fan controller wired to a mishimoto fan shroud with the 2- 12" fans... wired everything up correctly (at least I think). I then programmed the controller... it pulsed 4 times on setting "E". After programming it I sent the first fan to "A" and the second fan to "C"... only one fan came off. I then noticed a smell and looked at the controller to notice a little bit of smoke coming from the controller. It was super hot to the touch.

I'm guessing the relay burnt up ? has anyone ever had this problem?

[fullthrottle]

Yep just had this Happen last week. Mine felt hot to the touch and never kicked on my fans ever again. Wired fans to power and kept rocking. Put them on switches and called it done.

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[S14Driftr91]

Yea Im about to do that too or try that adjustable controller you can pick up from autozone or advanced. This dif controller is such a piece of shit.

[Sileighty_85]

Post # 312

http://zilvia.net/f/builds-builds-only/332057-project-rb-how-11.html

Depending on the amperage draw of the fans, if the fans pull more than 15 amps each then the relays will fry.

[Andres_G]

My first dif controller burnt up, my second one was bad upon arrival, my third one has been working great for a little over two years.

Just kick it back to fr sport IF it's truly damaged. But first make sure that you programmed it correctly. The directions are a little ambiguous, so make sure you have a firm understanding of them.

I'd definitely get this controller again if I had to. Imho, it's worth it.

[KiLLeR2001]

I bought one from FRSport a few months ago, and it was DOA, so I sent it back and got another one, which took a little while since DIF had to analyze it and make sure it was a faulty unit. I got a new one and it works fine, although I don't have the integrated relays powering the fans, I'm using it as a signal to power a set of standalone bosch relays. This way I won't have to worry about the amperage issue Sileighty_85 posted about.

Ever since my transaction, I noticed FRSport stopped selling the DIF controller, probably due to the amount of issues with them.

[Andres_G]

I got a new one and it works fine, although I don't have the integrated relays powering the fans, I'm using it as a signal to power a set of standalone bosch relays. This way I won't have to worry about the amperage issue Sileighty_85 posted about.

That's a great idea you got there.

[S14Driftr91]

Yea I guess its either hit or miss with these controllers. It took me couple attempts to get the programming down but around the 4th time, the fans pulsed 4 times, followed the next steps, started the car, fan1 came on and then fan2.... shut the car off, fans were still going (30 second cool down feature). Next thing you know that 30 seconds turned into 3 minutes so as i went to pull the "B+" (power souce) off the box was burning hot and smoke started coming out of it.

Unfortunately, since these controllers are discontinued, I never got a chance to buy it though frs or 240sxmotoring and got it through a member on here so im kinda SOL :duh:

I went and purchased an imperial thermo fan control from advance this afternoon so we'll see how this goes. Anyone have any experience installing one of these ?

[Om1kron]

Post # 312

http://zilvia.net/f/builds-builds-only/332057-project-rb-how-11.html

Depending on the amperage draw of the fans, if the fans pull more than 15 amps each then the relays will fry.

Yeah none of the dif controllers can handle high amperage fans. (they have a heavy duty one fr sport mentioned) which is sure what that link is showing.

[Andres_G]

Unfortunately, since these controllers are discontinued, I never got a chance to buy it though frs or 240sxmotoring and got it through a member on here so im kinda SOL :duh:

I went and purchased an imperial thermo fan control from advance this afternoon so we'll see how this goes. Anyone have any experience installing one of these ?

If you know your way around a soldering gun, you can try replacing those relays...and then just use the fan controller as a trigger signal to some regular bosch relays, as it was mentioned a couple of posts above me.

Yeah none of the dif controllers can handle high amperage fans. (they have a heavy duty one fr sport mentioned) which is sure what that link is showing.

What's the most that e-fans are drawing now a days? My Flex-a-lite 220 Black Low-Profile 12" Dual Fans draw about 20 amps (10 Per fan), and they keep my car at around 185-190 degrees.

[ka4life87]

Just tap into condensor fan relay, and fans will automatically kick on at 195, i have dual fan setup on mine with 2 seperate bosch relays, use signal from ecu to trigger relays

[Sileighty_85]

Yeah none of the dif controllers can handle high amperage fans. (they have a heavy duty one fr sport mentioned) which is sure what that link is showing.


In my thread I talk about that and show the DIF PWM version which is rated at 60amps. which will handle the Dual FAL's which only pull around 32amps total