Runs but no heat
The drum turns and the timer runs, but the clothes come out cool and damp.
Start here: Start with airflow first, then check whether the dryer ever produces heat at all.
Dryer error code troubleshooting
Electrolux Dryer H2 B2 Code
Direct answer: An Electrolux dryer H2 or B2 code usually means the dryer is seeing a heat or airflow problem. Most of the time, the first thing to check is a packed lint screen, crushed vent hose, or a vent run that is too restricted for the dryer to move hot air properly.
Most likely: The most likely cause is poor airflow through the dryer and vent, which can make the heater run too hot, trip a safety device, or shut heat down.
Start with the easy outside clues: weak exhaust at the wall cap, longer dry times, a hot cabinet, or a load that tumbles but never gets properly dry. Reality check: a lot of these code calls end up being a vent problem, not an internal failure. Common wrong move: replacing a dryer heating part before checking the vent all the way to the outside.
Don’t start with: Don’t start by ordering a dryer control board or guessing at gas valve parts. On this complaint, airflow and simple heat checks come first.
If the dryer runs but clothes stay damp,check the lint screen, vent hose, and outside hood before opening the cabinet.
If the code comes back right after clearing airflow,move on to the dryer heating circuit and safety cutoff checks.
Last reviewed: 2026-04-17
What this code usually looks like in the house
Heats briefly then quits
You feel heat for a short time, then the dryer goes cool and the code returns.
Start here: Look for a restricted vent or a tripped dryer thermal cutoff before anything else.
Very long dry times
Loads eventually dry, but only after extra cycles, and the cabinet may feel hotter than normal.
Start here: Treat this like an airflow problem until proven otherwise.
Code appears early in cycle
The code shows up within the first several minutes, sometimes before the load gets warm.
Start here: Check for a blocked vent path, then move to the dryer heating element or dryer high-limit thermostat branch.
Most likely causes
1. Restricted dryer vent or lint buildup
This is the most common reason a dryer overheats, dries poorly, or throws a heat-related code. Hot air has nowhere to go, so temperatures climb where they should not.
Quick check: Run the dryer on a heat cycle with the vent disconnected from the back for a short test. If heat and airflow improve noticeably, the vent path is the problem.
2. Clogged dryer lint screen or lint screen housing
A screen coated with softener residue or a packed lint chute can cut airflow enough to trigger heat complaints even when the outside vent is partly clear.
Quick check: Wash the dryer lint screen with warm water and mild dish soap, dry it fully, and look down into the lint screen slot for packed lint.
3. Open dryer thermal cutoff or failed dryer high-limit thermostat
When a dryer has been running too hot, a safety device can open and leave you with a tumbler that runs but will not heat properly.
Quick check: If airflow is now good but the dryer still has no heat at all, a safety part in the heating circuit becomes much more likely.
4. Failed dryer heating element
On electric dryers, a broken element can leave you with no heat or weak uneven heat after airflow checks pass.
Quick check: If the vent is clear, the dryer has proper power, and the machine still never heats, the dryer heating element is a strong suspect.
Step-by-step fix
Step 1: Check the easy airflow clues first
Most H2 or B2 complaints are caused by air not moving out of the dryer fast enough. This is the safest and most common place to start.
- Turn the dryer off and let it cool if it has been running hot.
- Pull out the dryer lint screen and clean off lint.
- If the screen looks waxy or water beads on it, wash it with warm water and a little mild dish soap, then dry it fully.
- Look into the lint screen housing with a flashlight for packed lint near the opening.
- Go outside and check the vent hood. Make sure the flap opens freely and is not packed with lint, a bird nest, or wet debris.
- Behind the dryer, look for a crushed, kinked, or badly sagging vent hose.
Next move: If you find a clear blockage or a crushed hose and correct it, run a test load. The code may be gone without any part replacement. If nothing obvious is blocked, keep going and compare airflow with the vent connected versus disconnected.
What to conclude: A dryer that cannot breathe will often act like it has a bad heater even when the real problem is the vent path.
Stop if:
- You smell burning lint or melting plastic.
- The vent connection is damaged enough that it will not stay attached safely.
- The dryer cabinet is unusually hot to the touch even after a short run.
Step 2: Do a short vent-off airflow test
This separates a house vent problem from a dryer-internal heating problem early, before you chase parts.
- Unplug the dryer before moving it.
- Disconnect the vent from the back of the dryer.
- For a gas dryer, stop here and call a pro if moving the unit strains, bends, or loosens the gas connection.
- Plug the dryer back in and run it for just a few minutes on a heated cycle with the vent disconnected and the room watched the whole time.
- Feel for strong airflow at the dryer outlet and check whether the drum begins producing normal heat.
- Shut the dryer back off after the short test.
Next move: If airflow is strong and heat returns or improves with the vent off, the house vent is restricted and needs to be cleaned or corrected. If airflow is still weak or there is still no heat with the vent disconnected, the problem is inside the dryer.
What to conclude: A good vent-off test is one of the fastest ways to avoid replacing a perfectly good dryer heating part.
Step 3: Make sure the dryer is actually getting full power
An electric dryer can tumble on partial power and still have no heat, which looks a lot like a failed heater.
- If you have an electric dryer, check the breaker panel for a half-tripped double breaker.
- Reset the dryer breaker fully off, then back on once.
- Run the dryer again and see whether heat returns.
- If the breaker trips again, stop using the dryer.
- If you have a gas dryer, confirm the gas shutoff valve is fully open and the home has gas service to other appliances if applicable.
Next move: If heat returns after restoring full power, the code was tied to a supply issue rather than a failed dryer part. If power and supply look normal and the dryer still does not heat, move to the internal heating parts branch.
Step 4: Check the dryer heating safety parts if airflow is now good
Once the vent path and power are ruled out, the most common internal failure is a safety part that opened after overheating.
- Unplug the dryer before opening any access panel.
- Open the service area needed to reach the heating circuit components for your dryer style.
- Inspect for obvious signs of overheating such as burnt terminals, broken wires, or a split heater coil.
- Use a multimeter to check continuity on the dryer thermal cutoff and dryer high-limit thermostat after the dryer is unplugged.
- If either safety part tests open, replace the failed part and correct any airflow problem that likely caused it.
Next move: If a failed safety part is replaced and airflow is corrected, the dryer should heat normally without throwing the code again. If the safety parts test good, the heating element becomes the next likely repair on an electric dryer.
Step 5: Replace the failed heating part or call for service on the gas side
By this point you have narrowed the problem down enough to act without blind guessing.
- On an electric dryer, test the dryer heating element for continuity if the safety parts tested good.
- Replace the dryer heating element if it is open or visibly broken.
- Reassemble the dryer, reconnect the vent, and make sure the vent hose is not crushed when you push the dryer back.
- Run the dryer and confirm steady heat, strong airflow outside, and no returning code.
- On a gas dryer that still shows the code after airflow and supply checks, stop at diagnosis and schedule service for ignition or burner-side testing.
A good result: If the dryer heats steadily and the code stays gone through a full cycle, the repair path was correct.
If not: If the code returns even with good airflow and confirmed-good heating parts, the problem may be in wiring, sensing, or controls and is no longer a good guess-and-buy job.
What to conclude: You should end with either a clear confirmed part replacement on an electric dryer or a clean service call on the gas side instead of throwing parts at it.
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FAQ
What does an Electrolux dryer H2 or B2 code usually mean?
It usually points to a heat or airflow problem. In the field, the most common cause is restricted venting or poor airflow, with failed heating safety parts coming next if the dryer has been overheating.
Can a clogged vent really cause this code?
Yes. A clogged or crushed vent is one of the most common reasons for heat-related dryer codes. The dryer can overheat internally or shut heat down because the hot air is not leaving the machine fast enough.
Why does my dryer still tumble if the heat parts are bad?
The drum motor and the heating circuit are separate. A dryer can run and tumble normally while a dryer thermal cutoff, dryer high-limit thermostat, or dryer heating element has failed.
Should I replace the heating element first?
No. Check airflow and power first. A bad vent can make the dryer act like it has a failed heater, and replacing parts before clearing the vent often wastes money.
What if I have a gas dryer instead of an electric one?
Start with the same airflow checks, because vent restriction still matters. After that, gas-side ignition and burner diagnosis is a better service call than a guess-and-buy repair for most homeowners.