Vaporizer 101 · Getting Started
Why Isn't This Working? (The Vaporizer Troubleshooting Guide)
"Before you send it back, try these fixes. I've made every one of these mistakes."
Roughly 95% of "my vaporizer is broken" messages are technique problems, not hardware. Weak vapour, harsh hits, and "it doesn't get me high" are almost always solved by fixing temperature, draw speed, grind, pack density, battery level, or cleaning. This is the decision tree I run through every time someone messages me at 11pm convinced they need to send it back.
Before you contact the manufacturer, run the seven-point checklist at the bottom. You'll probably find your answer.
The DM I Get Every Week
"Dennis, I think my vaporizer is broken."
I get some variation of this message constantly. Instagram DMs. Emails through the site. Mates of mates texting at 11 p.m. (a time I now, at forty-two, consider to be well past bedtime and yet, somehow, still answer anyway). The device isn't producing vapour. Or it's harsh. Or it's not getting them high. Or it tastes like burnt popcorn and disappointment.
95% of the time, it's not the device. It's something fixable.
I nearly quit vaping in my first week back in 2018, because I couldn't figure out why my expensive new device was producing nothing but warm air and frustration. Turned out I was overpacking, drawing too hard, and not waiting for proper heat-up. Three fixable mistakes that almost sent me back to spliffs. Dave, having watched me panic for a week, diagnosed all three in about ninety seconds.
This guide covers every problem I've encountered, every mistake I've made, and every fix that actually works. Before you return your device, go through this list. You'll probably find your answer.
Problem 1: Weak or No Vapour
Symptoms: wispy draws, barely visible vapour, feels like inhaling warm air, "nothing's happening."
This is the most common complaint I hear. The good news: it's almost always technique, not hardware. I've talked more people through this over WhatsApp than any actual IT support I've done at work. Which says something about either my priorities or my employer's.
1. Temperature Too Low
If you're vaping below 175°C, you're in microdose territory. You'll get terpenes and a hint of THC, but nothing substantial. For a proper session, try 185–195°C. That's where most cannabinoids vaporise efficiently. If you've been running at 165°C wondering why nothing's happening, this is your answer. (See The Temperature Guide for the science.)
2. Drawing Too Hard (The Bong Rip Problem)
This was my biggest mistake in week one. I'd been smoking bongs for years — hard, fast pulls to clear the chamber. I applied the same technique to my vaporizer. Result: nothing. Warm air. Confusion.
Here's why: when you draw hard and fast, you pull cool ambient air through the device faster than the heater can warm it. The effective temperature drops. The herb barely heats. You get thin, disappointing results.
The fix: Slow, steady draws. Think "sipping hot tea," not "clearing a bong." 3–5 seconds per draw for session vapes, 7–10 seconds for convection-heavy devices like the V3 Pro. Match draw rate to heater output: better vapes lose less heat from your draw, so it matters less.
Jake learned this the hard way on his V3 Pro before we eventually convinced him his £299.99 TinyMight 2 wasn't actually broken — it was just his brain and the TinyMight 2 disagreeing about pacing. Two devices, same lesson. Forever immortalised.
3. Grind Issues
Your grind matters more than you'd think. Vaporisation works by heating the outer surfaces of plant material. More surface area = more efficient extraction.
If you're not grinding at all: that's your problem. Whole nugs have minimal surface area. You're heating a dense mass instead of exposing trichomes to heat. Use a grinder. Always.
If your grind is wrong for your device type, here's the cheat sheet:
| Device Type | Recommended Grind | Why |
|---|---|---|
| Conduction (PAX, chamber-on-bottom designs) | Fine to medium-fine | Maximum surface contact with heated walls |
| Convection (Arizer, TinyMight 2) | Medium to medium-coarse | Hot air needs to flow through the material |
| Hybrid (Mighty+, V3 Pro) | Medium | Balance airflow with surface contact |
I spent my first month grinding everything powder-fine. Clogged screens constantly, choked the airflow on my convection devices, got frustrated. Medium grind transformed my experience.
4. Pack Density Issues
Overpacked: this was the primary reason my first week was a disaster. I treated the chamber like a spliff — cram in as much as possible, pack it tight. Wrong. Completely wrong. Overpacking restricts airflow. The hot air (or draw) can't move through the material properly. You get weak, thin vapour despite a full chamber.
Underpacked: too little herb means too much empty space, inconsistent heating, and weak extraction.
The fix:
- Conduction vapes: Full chamber, moderate-firm pressure. Material must contact heated walls.
- Convection vapes: About 3/4 full, very light packing. Air needs to flow through.
- Hybrid vapes: Full but not compressed. Light tamp, not a press.
The "pack it tight for more effect" instinct from smoking doesn't transfer. A properly packed vaporizer chamber should have slight give when pressed — firm but not compressed.
5. Battery Too Low
Half-charged devices heat inconsistently. Some devices won't reach full temperature on low battery, and the ones that do often struggle to maintain heat between draws. The V3 Pro community specifically notes this: the device really only works well when the battery is fully charged. Performance drops noticeably as battery depletes.
The fix: Full charge before sessions. If vapour suddenly drops mid-session, check your battery level.
6. Device Needs Cleaning
Clogged screens restrict airflow dramatically. Resin buildup in the airpath or cooling unit creates resistance that makes drawing feel laboured. If your device was working fine a month ago and now produces weak vapour, cleaning is probably the answer. (See I Hate Cleaning Too for the lazy person's approach.)
7. Herb Quality / Moisture Content
Old, dry herb: already lost terpenes and some potency. Vaporises too quickly and harshly. The flavour will be minimal.
Too wet herb: energy gets spent boiling water before cannabinoids vaporise. Low-temp sessions feel weak until the bowl dries out.
The squeeze test: properly cured cannabis should spring back slightly when squeezed. If it crumbles to dust, it's too dry. If it feels damp and stays compressed, it's too wet. Boveda packs (62% humidity) in your storage container solve both problems.
Problem 2: Harsh, Hot, or Unpleasant Vapour
If vaping feels like smoking, something's wrong. The whole point is that it shouldn't.
I spent two weeks on my first vape thinking the sore throat was "normal" before someone told me my temperature was too high. That someone was Dave. He has, collectively, saved me from a great many preventable mistakes and he will never let me forget it.
Symptoms: throat burn, coughing, hot vapour, uncomfortable draws, "feels like I'm smoking."
1. Temperature Too High
Above 200°C gets harsh for most people. Above 210°C, you're approaching combustion territory — the terpenes are degrading, the throat hit increases, and you're defeating the purpose of vaporising.
The fix: Drop to 180–190°C and work up from there. You might be surprised how satisfying lower temps can be once you adjust your expectations.
2. Drawing Too Slowly
The opposite of the weak vapour problem. If you draw too slowly, air dwells in the heater too long and gets too hot. The vapour scorches before it reaches your lungs. The fix: Find the middle ground. Not sipping, not ripping. Steady, moderate draws.
3. Cooling Unit Dirty or Missing
Resin in the cooling path = hot, stale vapour. If your Mighty+ or Crafty+ V2 hasn't been cleaned in weeks, this is almost certainly contributing. Also check that your cooling unit is properly assembled. I've seen people running their Mighty+ with the cooling unit screens misaligned, wondering why the vapour was harsh.
4. New Device — Didn't Do Burn-Off
If this is a brand-new device and it tastes like hot plastic or chemicals, you probably skipped the burn-off cycles. Manufacturing residue — machine oils, dust, whatever — needs to be burned away before you use the device. Run 2–3 empty heat cycles at maximum temperature before loading any herb. I skipped this with my first vape. Those first sessions tasted like factory. Don't be me.
5. Herb Is Too Dry
Over-dried material at high temps is harsh and unpleasant. The vapour feels thin but hot, scratchy on the throat. The fix: Boveda packs for storage. Or accept slightly lower temperatures if your herb is dry.
6. You're Combusting
This is the serious one. If your device is actually burning your herb instead of vaporising it, you'll see black or ashy AVB (should be brown), smell acrid campfire (should smell toasted), and produce dense, lingering smoke (vapour should dissipate quickly). Causes: temperature set too high (210°C+ with certain devices), hot spots in cheap devices, holding the button too long on on-demand vapes, or DynaVap heated past the click. Fix: lower temperature. Check AVB colour after every session.
Cannabis combusts at approximately 230°C. Quality devices with accurate temperature control shouldn't combust at displayed temps below this. But cheap devices with poor thermal management can have hot spots that reach combustion temperatures even when displaying "safe" numbers.
Problem 3: "It Doesn't Get Me High"
Symptoms: completed a session but effects feel weak or absent compared to smoking.
This is the one that nearly made me quit in my first week. I'd vape a full bowl, feel basically nothing, and wonder if I'd been scammed.
1. Tolerance Recalibration (The Spliff Problem)
If you're coming from spliffs (cannabis + tobacco), here's the uncomfortable truth: the high from vaping feels different, and you may need time to adjust. What you're losing:
- The nicotine head-rush from tobacco
- The "punch" from combustion byproducts
- The specific ritual and pacing of smoking
A landmark Johns Hopkins study found that vaporised cannabis actually produces higher blood THC levels than smoked cannabis at equal doses. At 25mg THC, participants showed peak blood THC of 14.4 ng/mL from vaping versus 10.2 ng/mL from smoking — roughly 40% higher.
Vaporisation is pharmacologically more efficient, not less. The "it doesn't hit as hard" perception is about subjective experience, not actual THC delivery.
Those numbers genuinely surprised me. I'd been assuming I was getting less THC from vaping. Turns out I was getting more — I just wasn't getting the combustion byproduct rush that my body had confused with "being high." This is, to spare Dave the trouble of texting me again, the "blame the wrong plant" thesis in a single paragraph.
The fix: Give it 5–7 days of exclusive vaping. Your tolerance and expectations need to recalibrate. The "lighter" feeling isn't less THC — it's cleaner THC without the combustion byproduct noise. (I wrote about this extensively in Your Lungs After 30 Days. The first week is rough. By week two, I didn't miss spliffs at all.)
2. A Technique Problem
Everything from Problem 1 applies here. Weak vapour = weak effects. If you're overpacking, drawing too hard, running low temperatures, or not waiting for proper heat-up, you're simply not extracting enough cannabinoids to feel much. Go back through the Problem 1 checklist. Fix the technique issues first.
3. Not Finishing the Bowl
Session vapes are designed for complete extraction over 5–15 minutes. If you take three draws and stop, you've barely started.
The fix: Ride the bowl to completion. Draw until vapour production drops off, the flavour turns "toasted popcorn," and the material is uniformly brown. That's when extraction is complete.
On-demand vapes are different — you can take one hit and stop. But session vapes expect you to finish what you started. (My mate Tom, who runs a Crafty+ V2 and whose morning cough vanished in six months, treats his session like a radio show: starts, rides it, ends cleanly. Follows the format. It's a useful mental model.)
Problem 4: Bad Taste
There's a specific flavour I call "neglected vaporizer." It's a cross between stale popcorn and the inside of an old kettle. If you know it, you know it — and you know your device needs cleaning.
Symptoms: stale, chemical, burnt, "hot plastic," or generic unpleasant flavour. Causes, most to least common:
- Needs cleaning. Resin buildup in the airpath creates a stale, "old vape" flavour that contaminates every session. (See the Cleaning Guide.)
- New device — no burn-off. Manufacturing residue tastes like chemicals and plastic. 2–3 empty heat cycles at max temperature before first use.
- Old herb. Degraded terpenes = minimal flavour. If your herb is months old and has been sitting in a bag, it won't taste like much regardless of your device.
- Temperature too high. Above 200°C, terpenes degrade rapidly. Everything tastes the same — generic "hot cannabis" rather than strain-specific flavour profiles. Fix: lower temperatures (175–190°C) for flavour.
- Combustion. If you're combusting, everything will taste burnt and acrid.
- Cheap device with poor materials. If your device has plastic near the heating element or in the airpath, you may be tasting that plastic. The only fix is a better device. This is why I recommend against £30 Amazon vapes.
Problem 5: Uneven Extraction
Symptoms: AVB is dark on edges, green in the middle. Inconsistent draws. Some hits strong, others weak.
- Conduction device without stirring. Material against the hot chamber walls cooks faster than material in the centre. The fix: stir mid-session. Open the chamber, give the herb a quick stir with a tool or the end of a paper clip, close, continue. Some people consider this a faff. It is. But it produces more even extraction.
- Pack too tight. Hot air can't reach the centre of a compressed pack. The outer material extracts; the inner material stays green. Lighter packing fixes it — especially for convection and hybrid devices.
- Grind too coarse. Uneven particle sizes = uneven heating. A consistent medium grind from a decent grinder produces more uniform results than tearing by hand.
- This is partly normal. Conduction devices will always have some extraction variation between centre and edges. If you want perfectly even AVB, convection or hybrid devices handle this better. (See Conduction vs Convection.)
Problem 6: Device-Specific Issues
I keep repair notes. The ADHD brain needs systems or everything falls apart. Sarah refers to the repair-notes spreadsheet as "extremely on-brand." She's right.
Mighty+ / Crafty+ V2 (Storz & Bickel)
| Issue | Cause | Fix |
|---|---|---|
| Restricted airflow | Cooling unit clogged (the most common issue) | Clean every 2–3 sessions. ISO soak for max 30 minutes, rinse, dry completely |
| Air leaks | O-ring degradation | Replace O-rings periodically. Available from S&B or Amazon |
| Inhalation difficult | Overfilled chamber; screen clogging | Use the filling aid. Don't overfill. Replace screens regularly |
| Orange light flashing | Low battery | Charge before use |
| Temperature fluctuation | Normal ±5°C oscillation during use | Take lighter, slower draws. Ensure battery is charged |
Community members report the cooling unit should be cleaned, not replaced — with proper maintenance it lasts years. ("I'm still on my original cooling unit after 4 years. Clean it often and replace the screens.")
PAX Devices
| Issue | Cause | Fix |
|---|---|---|
| Restricted airflow | Vapour path blockage | ISO-dampened pipe cleaner through the mouthpiece hole. Clean every 8–12 sessions |
| Mouthpiece sticky/unresponsive | Resin buildup | Deep clean, apply manufacturer lubricant |
| Temperature indicator wrong | Hidden residue affecting sensors | Deep clean; contact support if persistent |
| General weak performance | PAX requires more frequent cleaning than other devices | Accept the maintenance burden or consider alternatives |
PAX is notoriously maintenance-heavy. If you're not willing to clean regularly, a different device might suit you better.
Arizer Devices (Solo 2, Solo 3 v2, Air MAX, ArGo)
| Issue | Cause | Fix |
|---|---|---|
| Glass stem too tight (new) | Stiff rubber gasket | Heat unit to max first, then insert stem with firm pressure. Gasket softens with use |
| Glass stem too loose (used) | Gasket worn | Place small O-ring between cap and chamber. Arizer considers loose fit "optimal airflow" |
| Inconsistent vapour | Pack density issues; herb moisture | Check pack (too tight or too loose both cause problems). Ensure herb isn't over-dried |
| First draws weak | Convection design reaching thermal equilibrium | Wait 20–30 seconds after temperature reached before drawing |
| Glass breakage | You dropped it (or Jake did) | Keep spare stems. Use protective cases. Consider a shorter bent stem |
DynaVap
| Issue | Cause | Fix |
|---|---|---|
| Combustion | Heated past the click / wrong cap position / didn't hear click | Heat the middle of the cap, not the end. Rotate while heating. Stop immediately when you hear the click. Heat in a quiet environment |
| Cap not clicking | Disc calibration lost | Replace cap. Contact DynaVap support |
| No vapour first cycle | Normal for some conditions | Use "priming" technique: heat to click, cool without drawing, reheat and draw |
| Combustion with induction heater | Device depth in chamber too deep | Cap should slightly stick out of heating chamber |
DynaVap combustion is almost always technique. I combusted seven times in my first week before I figured it out. Sarah asked if the kitchen was on fire. It wasn't. But the DynaVap cap was glowing and my herb was charcoal. Respect the click.
XMAX V3 Pro
| Issue | Cause | Fix |
|---|---|---|
| Weak/no vapour | Drawing too fast; airflow too open | Take long, slow draws (7–10+ seconds). Cover one air vent partially to increase heat |
| Performance drops mid-session | Battery-dependent performance | Device works best at full charge. Keep charged between sessions |
| Mouthpiece issues | Stock mouthpiece underwhelming | Upgrade to WPA or curved mini bubbler |
| Inconsistent | Battery depleted | Charge fully. The V3 Pro noticeably underperforms below 50% battery |
TinyMight 2
| Issue | Cause | Fix |
|---|---|---|
| Combustion | Button held too long / draw too slow | Shorter button holds (3–5 seconds, not 8–10). Faster draws. Lower temperature setting |
| Inconsistent hits | Technique learning curve | Practice. The TinyMight rewards precision |
| Glass stem breakage | Fragile by design | Keep spares. Handle carefully. Jake is not allowed to borrow mine anymore |
When It's Actually Broken
Sometimes the device is faulty. Here's how to tell the difference between user error and hardware failure.
Signs of Genuine Device Failure
- Won't turn on at all (after confirmed full charge). Check: charging cable, charging port, different power source. If still nothing: hardware failure.
- Heats but temperature wildly inaccurate. Combusting at displayed low temps, or no extraction at displayed high temps. Clean device, try different settings. If problem persists: temperature sensor or heating element failure.
- Physical damage. Cracked chamber, broken screen, battery swelling (stop using immediately), visible internal damage.
- Error codes or unusual indicator patterns. Check your manual first — some codes indicate user-fixable issues. If the code indicates hardware failure: contact manufacturer.
- Sudden performance drop after working fine. Check cleaning, battery, herb quality. If no improvement: possible heating element degradation.
What to Do
- Document the issue — photos, videos, description of symptoms
- Check warranty status — most quality devices have 2–3 year warranties
- Contact the manufacturer — not the retailer (unless the retailer is the manufacturer's authorised service centre)
- Be specific — "it doesn't work" isn't helpful. "Device reaches temperature but produces no vapour despite correct packing and full battery" is helpful.
Most warranty claims I've seen approved were for: heating element failure, battery not holding charge, temperature sensor malfunction, manufacturing defects. Most claims denied were for: user-caused damage (drops, water exposure), normal wear items (screens, O-rings, glass stems), and "I don't like how it performs" (not a defect).
Before You Send It Back: The Seven-Point Checklist
Ninety-five percent of "it doesn't work" problems are fixable without returning the device. Go through this checklist first:
- Check grind consistency (medium for hybrid/convection, fine for conduction)
- Check pack density (firm not compressed, 3/4 full for convection)
- Check temperature (185–195°C for proper sessions)
- Check draw technique (slow sips, 3–5 seconds)
- Check battery level (full charge)
- Clean the device (cooling units, screens, airpaths)
- Check herb quality (not too dry, not too wet)
If you're coming from spliffs: give it a week. The vape high feels different — cleaner, sometimes "lighter" — even though it's actually delivering more THC. Your tolerance and expectations need time to recalibrate.
If you've fixed everything and it still doesn't work: it might be the wrong device type for your consumption pattern. If you want quick, intense hits but bought a session vape, you'll always be disappointed. If you want relaxed, drawn-out sessions but bought an on-demand device that requires technique, same problem. (See also: Jake's £299.99 TinyMight 2 in a drawer. The Buying Guide walks through matching device to consumption style.)
If it's genuinely broken: document the issue, check warranty status, contact the manufacturer directly. Quality devices from reputable brands have proper support. Cheap devices from unknown brands… good luck.
What I'd Recommend
Three vapes, three philosophies. All easy to live with once the technique is sorted. Use code DENNIS5 at checkout for 5% off.
£255.99 · with DENNIS5: £243.19
Storz & Bickel engineering. Cannot combust at any sensible temperature. Most "is it broken?" issues with the Mighty+ are cooling-unit cleanliness — and S&B's design holds up for years if you maintain it.
£217.99 · with DENNIS5: £207.09
Glass airpath means you can actually see whether your draws are working. ISO-soak the stems and you've effectively done the maintenance. Hybrid heater handles both session and on-demand modes.
£79.99 · with DENNIS5: £75.99
Most "weak vapour" complaints with the V3 Pro are battery-state issues — carry a spare 18650 and the device performs above its price. Slow draws, full charge, you're sorted.
Use code DENNIS5 at checkout on herbvape.co.uk for 5% off any vaporizer.
