Temp Control trouble shooting...

[Fredman1]

I want to set up a thread for when we have specific TC problems.
My first one is the power (watts) spikes before settling on the pre set setting...
I have a 2.5 316L spaced coil. Watts is set at 13.5. When it fires, it spikes to 18, 22 sometimes up to 33W before settling back and below 13.5W ...gives me a hellova fright, and an uncomfortable vape...
What causes that?

 

[ShowerHead]

I want to set up a thread for when we have specific TC problems.
My first one is the power (watts) spikes before settling on the pre set setting...
I have a 2.5 316L spaced coil. Watts is set at 13.5. When it fires, it spikes to 18, 22 sometimes up to 33W before settling back and below 13.5W ...gives me a hellova fright, and an uncomfortable vape...
What causes that?

What mod, tank, and coil type?

 

[Fredman1]

Ah ofcourse sorry..its a Ammit and the mod is the DNA 75 (jac) Coil type is above..

 

[Beamslider]

The Spike is likely the preheat punch,. You can control that setting on some mods but not all.

What mod do you use for TC.

 

[Beamslider]

DNA ok. Change the Preheat wattage with Escribe for that profile

 

[Fredman1]

Not very fimiliar with escribe.., but will give it a go.
I would've thought the 13.5W I set the mod on, is the pre set punch...? Does escribe over rule the mod...or what?
So on escribe I set the pre set watts to say 15W ?

 

[Beamslider]

DNA will throw at the coil what it has a preheat setting on wattage then cut back when the Temperature is hit.

Under the setting for the profile in DNA you will see on the general tab

If you connect a temperature-sensing coil

under that is Preheat Power and Wattage
Plus how long to apply

This defaults to 75W and 1 second on DNA75 unless changed

Also there is a bar to change hard or soft punch. This will change how much of the Wattage set is applied

 

[Beamslider]

The 15 W you set is what it will use to maintain temp by lowering and raising it. The Preheat is a separate ramp up wattage applied

 

[Myk]

IMO you're thinking of TC wrong. You want it to get to the temperature you set it to be at very fast. The wattage is only there to suggest how fast it gets there.

With every SS coil I've built 20w in power mode wouldn't push it hard enough to get to temperature by the time a puff was done.

 

[Beamslider]

He is using a DNA 75 mod it has a separate preheat wattage and normal wattage. They have different functions.

The preheat wattage can only be set in escribe for the DNA chip he has. He can also change the punch level of the preheat wattage and time to apply. On DNA color chips the punch level can be changed on the mod itself but not the one he has.

The preheat and punch is to ramp it fast to get it ready to go. When it hits preset temp the mod will cut back and only use the 15 watts he set on the mod by fluctuating that and limiting it to the 15 watts he set as top level.

The default is the high end of the wattage to be applied for 1 second. 75 Watts in this case. If the coil is a 15 W or less coil it will hit hard on the beginning with that setting of 75 W preheat then drop. 75 W is too much for that coil. The Preheat can be set high for coils that need a lot of power to ramp up.

He should drop the preheat wattage to 20 to 25 watts and keep the regular wattage set on the mod to slightly higher than the coil needs. So the coil he has isn't hit too hard causing a bad vape. While the mod will drop it fast when the temp is hit at the beginning 75 watts preheat with high punch will reach that instantly on a low wattage coil.

A high preheat is definitely good to get a high watt coil up and running fast though.

 

[Beamslider]

 

[Fredman1]

WoW a BIG thanks to all. I've got some courage to tackle escribe now. Should've asked this long ago. I have 4 DNAs that i've been wrestling with...from time to time that is. Mostly they work fine. Its the fine tuning on escribe that's been lacking...Thanks again

 

[mackman]

This should help
EScribe Software Download and Tutorial

 

[Fredman1]

Another one for you TC gurus
My other DNA mod (Elfin 75W) has a problem at the moment. I get this sporadically with the others to actually....
Once again the coil is a 2.5mm, 316L at 0.85 ohms....spaced.
13 Watts and temp at 205C. When it fires the watts gradually lowers and bottoms out at about 3.5. Way to low for a decent vape.
Why would that be?
Also Escribe connected?

 

[Fredman1]

The juice level was low and after I filled it, its good and working well again. Can the juice level do that? As I said it happens sporadically but not sure if its always connected to the level. I'll keep an eye on it though..

 

[Fredman1]

Nah its not that. It just started up cutting the power down again...
I then go out of TC and back to power mode. Every now and again I go back to see how it does...sometimes its good again...sometimes not...its frustrating.

 

[Beamslider]

Low juice level would cause it to not put out vapor because it would be cutting the power to keep temp. Several things could be happening. The coil wick may not be wicking fast enough. Not enough juice on coil and it will heat up fast. The ohm reading needs to be fairly accurate it to work right also. If the ohm reading is off it will either run hot or will run cold and cut out. If the coil is gunked up it will also cause issues.

Maybe try taking the tank off and let it set at room temperature for half hour, then press fire button before putting it back on to clear reading from mod. Then put back on and see if it works ok after that.

 

[Fredman1]

Yeah in this case it was the coil being gunked up. Not much..I actually inspected it before but it looked good enough. I wicked this about 4 days ago...got a love/hate with these NETs..
Anyway... it seems sometimes it don't need much gunk to confuse TC....?

 

[ShowerHead]

Yeah in this case it was the coil being gunked up. Not much..I actually inspected it before but it looked good enough. I wicked this about 4 days ago...got a love/hate with these NETs..
Anyway... it seems sometimes it don't need much gunk to confuse TC....?

I've run some REALLY crummy looking (and tasting) coils/wicks in my DNAs without it doing anything but tasting like crap.

Have you run case thermals on the mods?
Made certain the mod resistance is set to a good value?

 

[Fredman1]

Have you run case thermals on the mods?
Made certain the mod resistance is set to a good value?

Not to sure what that means , so I don't really know how to answer...
Its not the wicking thing for sure. I tried another few wicks and another build...2.0mm.0.64ohm. In TC it stays stable on 0.64 to.
Wicked it very carefully. It starts out good but after a while it fades until it becomes unvapable.