Searching online, you’ll find a lot of people complaining about how their DeWALT blower won’t stay on. But, you won’t find nearly as many helpful tips about dealing with it.
I want to change that by sharing this troubleshooting guide that should help fix the problem for some users. Check it out and go through the tips below one by one to see if any fix the issue for you!
4 Things To Do If Your DeWALT Blower Won’t Stay On
- Before You Troubleshoot…
First things first; there’s a known defect with certain DeWALT blowers. They blow for a few seconds and then stop working, regardless of if you’re holding the trigger or not.
On the occasion that your model is doing this after you bought it new, I suggest getting a refund immediately. This is a manufacturing issue that’s really common with some DeWALT blower models.
Instead of making it your problem, contact the company and arrange a refund or an exchange for a functional model. Don’t troubleshoot since that’ll void the warranty and make getting a refund harder.
- Clean Debris Around Contacts
Not everyone gets this issue right out of the box, though. Some users might encounter it after weeks, months, or even a year or so of use. If you’re one of them, the rest of these tips will help you bunches.
I think the biggest contributor to this mess is dirt piling up around the contacts of the DeWALT blower and its battery. You can see the picture below to get an idea of which points I’m talking about.
When something gets in the way of the contacts on the blower and battery, the battery can’t share power. The connection needs to be fully secure, otherwise the power flow cuts out.
So, your DeWALT blower may not be staying on because of dirty contacts. Use a cleaner to scrub off the dirt on both sets of contacts thoroughly.
Try to use them together again afterward to see if the blower still turns off.
- Try Another Battery
Most people get spare batteries with their power tools. If you happen to be one of them, I suggest trying to see if that extra battery works with the DeWALT blower and helps it stay on for longer.
This will help confirm if the problem lies with the battery or the tool itself. So, use an extra, healthy DeWALT battery like the one I have below to power the blower and see if it works.
You’ll know if you need a new battery or if something is wrong with the tool depending on if the extra battery works or not. An old battery may get weak enough to start cutting out during use, leading to this issue.
In case your DeWALT battery is not healthy anymore, I have a video which shows how you can identify the bad cell on your DeWALT battery. You can watch it below.
In order to identify the bad battery cell, you must open the DeWALT battery cover and use a multimeter to measure DC voltage. Use the red probe to touch the battery side with red wire and use black probe to touch the battery side with black wire.
Each battery cell should have an output voltage between 3.6V to 4V. If the measured voltage is less than 3.6V or more than 4V, it means that specific battery cell is not good anymore.
You can fix an unhealthy DeWALT battery by resetting it. I also have a short video which shows how you can do this and you can watch it below.
In order to do this, you need another healthy DeWALT battery which has a similar voltage. Connect the B+ terminal of the DeWALT battery to another B+ terminal, and the B- to another B- of the battery.
Press the battery indicator to make sure it is receiving power. Just jump start it for few seconds and the reset is done.
- Motor Getting Stuck
A DeWALT blower needs its motor to produce the air it blows out. Without the motor, it won’t work. So, if the battery seems to be fully functional, the motor is what users should point the blame at next.
Take the covers off of the tool and look for its motor. The image below shows where it is on my particular model. After getting a look at the motor, use your hands to spin it around.
While spinning it with your hands, do you feel any resistance? Is it moving around without any trouble or does it get stuck at certain points when you’re trying to move it?
Dirt and debris could be stopping it from moving freely, so give it a good cleaning. But, if that doesn’t work, I suggest checking the bearings on the motor.
If any of those seem rusted, you’ll have to replace them to get the motor to spin again with proper speed in order to produce enough torque for the DeWALT blower to work without issue.
