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Appliance Error Codes

Bosch WQB245AXUC E01 Error Code | E01 Lint Filter Clogged

Error e01 on Bosch wqb245axuc: Lint filter clogged — lint filter or condenser requires cleaning to restore airf. Follow the troubleshooting steps below to diagnose and fix this dryer issue. ## What Does E01 Mean on a Bosch WQB245AXUC? Your Bosch dryer is displaying an E01 error code, which means the lint filter needs cleaning. Bosch heat pump dryers monitor airflow through the system — when the lint filter becomes clogged with fiber accumulation, airflow drops below the minimum required for safe and efficient drying. E01 is triggered as a preventive warning before the restriction becomes severe enough to cause overheating. This is a maintenance code, not a mechanical failure. ## Fault Details | Field | Value | |-------|-------| | Error Code | E01 | | Appliance | Bosch WQB245AXUC 800 Series 24-inch Compact Ventless Heat Pump Dryer | | Fault Type | Lint filter clogged | | Severity | Low | | User Serviceable | Yes — follow steps below | | Applicable Models | WTW87NH1UC, WQB245AXUC, WQB245B0UC | ## Common Causes - Lint filter has accumulated fibers from multiple drying cycles without being cleaned

  • Lint filter not reinstalled correctly after previous cleaning — sitting off-center or tilted
  • Fine lint particles that passed through the filter mesh and accumulated on the condenser fins
  • Washing fabric softener sheets in the dryer — the coating clogs filter mesh pores
  • Dryer used for heavy lint-shedding loads (new towels, fleece) without more frequent filter cleaning ## Step-by-Step Troubleshooting | Step | Action | What To Do | Expected Result | |------|--------|------------|-----------------| | 1 | Remove and clean the lint filter | The lint filter is located inside the dryer door opening or behind the door on Bosch compact models. Pull it out and remove all lint by hand or with a lint brush. For fine lint embedded in the mesh, rinse under warm running water and allow to dry completely before reinstalling | Filter visibly clean — mesh clear when held up to light | | 2 | Clean the filter housing cavity | With the filter removed, use a vacuum with a narrow attachment to clean lint from the filter housing and the duct area just below the filter. Lint accumulates in this area over time even with regular filter cleaning | Filter cavity clean — no loose lint visible | | 3 | Check the condenser unit | On Bosch heat pump dryers, the self-cleaning condenser can accumulate residue over time. On models without auto-clean, the condenser is accessible via a bottom flap. Rinse condenser fins with warm water and allow to dry. Some 800 Series models clean the condenser automatically every 5 cycles | Condenser fins clear — water drains freely through the fins | | 4 | Restart the dryer and verify E01 clears | Reinstall the clean, dry filter. Close the door and start a new drying cycle. E01 should clear immediately if the filter was the cause. If E01 returns within a few minutes, the condenser or exhaust path may still be restricted | Cycle runs without E01 — airflow restored after filter cleaning | | 5 | Run a Bosch drum care program | Some Bosch models include a drum care or auto-clean program that helps clear residual lint and condenser deposits. Refer to your model’s manual for the cleaning program procedure | Auto-clean program completes; E01 does not return on next cycle | ## Frequently Asked Questions ### How often should I clean the Bosch dryer lint filter? Bosch recommends cleaning the lint filter after every single drying cycle. This is especially important for Bosch compact heat pump dryers, which are ventless — all lint is captured in the closed system. Regular cleaning prevents E01, reduces drying time, and extends the life of the heat pump compressor. ### Why does Bosch recommend cleaning after every cycle? Unlike vented dryers that exhaust some lint outside, heat pump dryers recirculate air in a closed loop. Every gram of lint that stays in the system accumulates. Even one forgotten cleaning cycle can noticeably reduce airflow and increase cycle time. The filter is accessible and quick to clean — it should become a habit like emptying a dryer vent. ### Can I put the Bosch lint filter in the washing machine? No. Do not wash the lint filter in a washing machine. The high-pressure water and agitation can damage the delicate mesh. Rinse the filter by hand under warm tap water and gently brush with a soft brush if needed. Always allow the filter to air dry completely before reinstalling. ### What is the Self-Cleaning Condenser on Bosch dryers? The Self-Cleaning Condenser (SCC) is a feature on some Bosch dryers (500 and 800 Series) that automatically rinses the condenser fins with water drawn from the condensate tank several times during each cycle. This eliminates the need to manually clean the condenser, which in older dryers required periodic user maintenance. Even with SCC, the lint filter must still be cleaned after every cycle. --- Source: Bosch 800 Series 24-inch Compact Ventless Heat Pump Dryer service documentation. Last Updated: March 2026 ### Is it safe to keep using my Bosch wqb245axuc with error e01? If error e01 does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the dryer with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error e01 on a Bosch wqb245axuc? Repair costs for error e01 on the Bosch wqb245axuc dryer depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a Bosch-authorized service provider for an accurate estimate based on your specific situation. ### What does error code e01 mean on a Bosch dryer? Error code e01 on Bosch dryer models indicates Lint filter clogged — lint filter or condenser requires cleaning to restore airflow. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue. ### Is it safe to keep using my Bosch wqb245axuc with error e01? If error e01 does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the dryer with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error e01 on a Bosch wqb245axuc? Repair costs for error e01 on the Bosch wqb245axuc dryer depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a Bosch-authorized service provider for an accurate estimate based on your specific situation. ### What does error code e01 mean on a Bosch dryer? Error code e01 on Bosch dryer models indicates Lint filter clogged — lint filter or condenser requires cleaning to restore airflow. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue.