Two of the more alarming Caliburn faults are a device that fires by itself and one that refuses to charge, yet both usually have simple causes and fixes. A Caliburn auto fires, meaning it activates on its own, when liquid or pressure interferes with the draw sensor. It fails to charge usually because of a dirty port, a faulty cable or a flat connection, with most cases solved by cleaning, a cable swap or a quick reset. Here is how to tackle both.

For related issues, our guide on why a Caliburn is not hitting covers firing faults. Our guide on how to clean a Caliburn helps with the contacts.

Why a Caliburn auto fires

Auto firing is when the device activates by itself without you puffing, often heard as a crackle or hiss, which understandably worries people. On a draw activated Caliburn, firing is triggered by a sensor that detects the airflow of your puff. When that sensor is fooled into thinking you are drawing when you are not, the device fires on its own. The usual culprit is e-liquid or moisture reaching the sensor, along with any trapped pressure around it, both of which mimic the airflow of a real puff. It is almost always a contamination issue rather than a serious fault.

How to fix auto firing

The fix for auto firing follows directly from the cause: clear whatever is fooling the sensor. First, lock the device with five quick clicks of the button to stop it firing while you work. Then remove the pod and inspect the connection area and sensor at the bottom of the pod slot for any e-liquid, condensation or residue. Gently dry everything with a cotton bud or tissue, including the base of the pod, then refit it. If the pod is over saturated or worn, swap it for a fresh one. Clearing the sensor in this way resolves the large majority of auto firing cases.

If auto firing continues

If cleaning the sensor and fitting a fresh pod does not stop the auto firing, keep the device locked for safety and do not leave it firing unattended. Some Caliburn models include a fault detection feature that will disable the draw activation if it senses a problem, which is a protective measure rather than a breakage. A device that continues to auto fire after thorough cleaning and a new pod may have a genuinely faulty sensor, in which case it should be replaced rather than used. Never continue using a vape that fires on its own once you have ruled out contamination, since a persistent fault needs a new device.

Why a Caliburn will not charge

A Caliburn that will not charge is usually let down by something outside the device itself. The most common causes are a charging port clogged with pocket lint or debris, a faulty or low quality USB-C cable, plus the chance of a poor connection. Less often, the battery itself has reached the end of its life, which is more likely on an older, heavily used device. Before assuming the worst, it is worth methodically ruling out the simple causes, since a blocked port or a dud cable is far more common than a dead battery and both are quick and cheap to sort out.

If your device has reached the end of its life, the Uwell Caliburn collection stocks the full range, so a replacement is easy to find.

How to fix charging problems

Work through the charging fixes in order of likelihood. Start by inspecting the charging port and gently clearing any lint or dust with a dry cotton bud or a pin, since pocket fluff blocking the port is a very common cause. Next, try a different good quality USB-C cable, ideally the one supplied, as cheap or damaged cables often fail to deliver a proper charge. A quick reset with five clicks of the button can also clear a minor glitch. A Caliburn normally charges fully in around an hour, so if it still shows no charging light after trying a clean port and a known good cable, the port or battery may be at fault.

When to replace the device

Most auto firing and charging problems are fixable at home with cleaning, a fresh pod or a different cable. If, however, the device keeps auto firing after thorough cleaning and a new pod, the device has likely failed. The same applies if it will not charge after cleaning the port and trying a known good cable. Either way the device itself has likely failed. Caliburns are reliable but, like any electronic device, not immortal, since the sensor or battery can eventually fault. At that point the safest and simplest answer is a replacement, possibly under warranty if the device is still covered, rather than continuing to use a faulty unit.

Related faults to rule out

It is easy to confuse one fault for another, so a quick word on related problems helps. If your Caliburn is not firing at all rather than firing by itself, that is a different issue with its own checks, covered in our guide on why your Caliburn is not hitting. And if the trouble is a harsh, scorched taste rather than the device misbehaving, the coil is likely burnt, which our guide on why your Caliburn tastes burnt explains how to fix. Matching the exact symptom to the right guide saves time and avoids replacing parts that were never the problem.

Many of these electrical and sensor faults share a single root cause, which is liquid getting where it should not be, so good habits prevent most of them. Filling correctly, vaping gently and wiping up any leaks all keep liquid away from the sensor and contacts, while a regular clean keeps the charging port and connections clear. Our guide on how to clean a Caliburn walks through the simple routine, since keeping the device clean and dry is the best way to avoid both auto firing and charging faults in the first place.

The bottom line

A Caliburn that auto fires almost always has liquid or moisture on its draw sensor, so locking it, removing the pod and drying the contacts and sensor usually fixes it, with a fresh pod as backup. A Caliburn that will not charge is most often a dirty port or a faulty cable, both easily sorted by cleaning the port and trying a known good lead, with a reset worth a try too. If either fault persists after these steps, the device has likely failed and should be replaced rather than used.

For more guides across the range, visit the Brand Insights: Uwell Caliburn hub. When you are ready, head to the Uwell Caliburn collection.

Vaping products are intended for use by existing adult smokers and vapers aged 18 or over. Always follow the manufacturer instructions supplied with your Uwell Caliburn device. Sold in line with UK regulations.

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