DNA40 issue and fix

[davetherayon]

Today the HCigar DNA40 was acting strangely. The atty ohmage was shooting up when fired, from its nominal 0.12 ohms right up to 0.45. Duff coil or connections? Ok, so a new coil went in, and all connections were cleaned with isopropyl... same result, 0.15 on resting, up to over 0.40 fired. No surprise then that every other atty put on the unit behaved the same, so clearly the DNA40 was out of whack. A google later, the solution! Change the temperature control right up to 500F, which then resets the DNA40 (it asks you if it's a new coil, which it wasn't doing before). The ohmage reading stabilised right then. Back to my favoured temp (430F) and all is well again

[VapingBad]

Most (not all) of the time unscrewing the atty and pressing fire will get you the new coil choice after you fix a connection problem. But once the problem is sorted the refinement mode should recalibrate it without the need to do anything, but it takes a bit of time to do this as it reads the coil and board temps after a minute of inactivity as they cool to get a better picture.

[letsavit]

Make sure the ground screw is tight to mate, mine gave me trouble from day one until I tighten it.

Didn't know about turing it up to 500f to force the new atty...