NAILER WONT FIRE NAILS

Sounds like either the battery is bad, or since one is new its possible the contacts in the gun are not making proper contact. Are you sure your charger is working as well ? If you have a volt meter check that the battery does have a charge on it.

don't have any of them but sounds jammed from sitting . too dry. anyplace tto put oil for the driver to move?

Did you take the nails out a check the safety , where the nail comes out ? Sounds like a stick or stuck safety switch . Good Luck !!!!!!!!

If your using refills that have wire holding the nails together.
Check to see if bits of wire, debris is collecting in around the striking hammer. I switched to paper and never looked back. Must have gone through 5k worth of nails and rarely jams. Other things to check,
1. Check the striking hammer, make sure it is not bent or damaged.
2. Check air pressure, Low pressure can cause jamming, misfires.
3. If the tool needs pneumatic oil, 2-3 drops before you start good rule of thumb.
4. Check spring return. Sufficient pressure must be maintained or the nails will not feed properly. Misfires, incorrect feed, jamming etc.
I had a Hitachi brad nailer and it was horrible. Fire 1 brad nail would jam or misfire. Did everything I could think of nothing worked. Put it up, got a Rigid brad nailer and never looked at the Hitachi again. :)
Sometimes you just get a lemon! (PS I understand you have a framing nail gun. Brad nail gun above is used for an example)
Hope this helps

replace the battery; they can drain and refuse to recharge after time in storage

Any time these guns become intermittent or stop firing but the fan still runs, the first the to check is the expiration date on the gas cartridges. The do expire and this will make the gun work inconsistently or not at all.

Start with the basics:
First check that the butane (or whatever gas is used) canister is full. If empty, put in a new one.

Second check to make sure your battery is fully charged to be able to fire the spark to work the nail gun. If not get the battery charged and/or replaced as needed.

Third make sure all of the safeties are working properly and that you have them engaged to the piece of wood you are nailing when you try the trigger.

If beyond that it does not work it could be a bad trigger, a bad safety switch, or even a bad connection from the battery to the device.

Hi,
Probably needs cleaning. You`ll need two new o`rings.

have you activated the fuel cell by pressing the black nozzle down onto the cylinder?

Does the fan run and the light blink ont he nailer? I have one that I just bought. I put in the wrong type of nails and got one stuck. I had to take the front apart to clear it and now the damm thing wont fire. The green light blinks and the gas cartridge is basically full, even the fan does run after I release the push lever, but no fire???

I wonder if yours is the same as mine did fire for a couple nails first just fine then got jammed...

I will try to charge the battery more.... MAybe like yours it needs a strong charge for the spark...
Russ