Topic: Second guessing the fan controller...

[Jeffy]

It's been over 10 days with no word from DCC. Nothing new there but I'm starting to second guess myself now.     I'm wondering if I should just buy the 1A diodes, wire it up and save myself $190. 

[neale_rs]

My vote is for saving the $190.  Extra electronics just decreases reliability.

[Jeffy]

I'm still on the fence.  Although if this was sold by a larger company, I would have bought it in the beginning.

Currently I have my fan set up like this:



Ignore the High-speed side.  I'm only using one relay and the low speed side.  Looks like they have only one diode to keep the AC clutch from engaging when the 180* switch is on.  I could buy a pack of 20 of those diodes for $5.     I do really like the PWM though.  I think that is a big plus which is what's swaying me buy it.

I do like how simple my current system is.  I can bypass it or replace it with $5 parts.

I guess we'll see when we get closer to the 45 day mark.

[neale_rs]

Maybe PWM is not so great.  An air conditioning technician told me that fans last longer when just turned on to a fixed speed.  It makes some sense since every time the speed is increased the fan has to accelerate some mass which will put extra load on it.

[grumpygy]

Told you so.

I never did hear from him Got my money back thru Paypal.

[aka-justin]

I like the simple circuit. Add a diode to your current setup and be done with it. Hell, you can bypass a diode with a second inline relay if you have one lying around.

[Bounty Hunter]

DCC was a wait for me also but well worth it.  Everything is in one small package and very reliable.

The owner makes them to order, so its not a matter of pulling it off the shelf and shipping it.

[Mozman68]

DCC was a wait for me also but well worth it.  Everything is in one small package and very reliable.

The owner makes them to order, so its not a matter of pulling it off the shelf and shipping it.

As long as one of the relays he uses doesn't stick...

Hasn't happened in a while....when it does, I just give the hood a "Fonzie" bump near where the relay is and it is usually jarring enough to stop the fan. 

   ayyyyyyyy

[Jeffy]

I like the simple circuit. Add a diode to your current setup and be done with it. Hell, you can bypass a diode with a second inline relay if you have one lying around.

Hmm, I really like that.  I hadn't though of doing it that way.  Actually, since it's only triggering the low-speed side, you don't even need a 70A relay.  A 40A relay will do fine instead.

I opened a depute on Paypal and will see if I can get an accurate shipping date.  If it's too long a wait then I'll cancel the order.  The guy should at least give you an idea of how long an order is going to take.  I've never had any of my emails answered when I've asked.  He's basically getting an intrest free loan at this point.

[Jeffy]

As long as one of the relays he uses doesn't stick...

Hasn't happened in a while....when it does, I just give the hood a "Fonzie" bump near where the relay is and it is usually jarring enough to stop the fan. 

   ayyyyyyyy

Hey, does your fan run all the time when the AC is on or is it setup to just run when the compressor is on?

[Mozman68]

When the AC is one...tied into the wire that powers the whole AC unit, so the fan automatically runs when AC is selected inside.  I don't think I've used it since I installed the fan though...just tried it to make sure it worked.

[Jeffy]

When the AC is one...tied into the wire that powers the whole AC unit, so the fan automatically runs when AC is selected inside.  I don't think I've used it since I installed the fan though...just tried it to make sure it worked.

Ok, so once the AC is on the fan runs regardless if the clutch is on or not.  I think that's the proper way to do it.  I still have to make a Y harness and get the signal lead out from inside the evaporator.

[Mozman68]

yep...tied in before the wire even hits the computer.

[sharpxmen]

Hmm, I really like that.  I hadn't though of doing it that way.  Actually, since it's only triggering the low-speed side, you don't even need a 70A relay.  A 40A relay will do fine instead.

I opened a depute on Paypal and will see if I can get an accurate shipping date.  If it's too long a wait then I'll cancel the order.  The guy should at least give you an idea of how long an order is going to take.  I've never had any of my emails answered when I've asked.  He's basically getting an intrest free loan at this point.

downside the way i see it is that you need to add more wires and reconfigure your current setup, only add 1 wire with the diode.

[aka-justin]

downside the way i see it is that you need to add more wires and reconfigure your current setup, only add 1 wire with the diode.

Very true. I like the diode, I was just giving ideas.