Bosch Dryer Error Codes

Complete Bosch Dryer Guide

This guide explains all Bosch Dryer error codes (CH series) with simple troubleshooting steps to help you identify and fix common issues safely before calling a technician.

E10
Heating System Fault
  • Check heating element for damage.
  • Inspect thermal fuse condition.
  • Test wiring connections.
  • Replace heater assembly if faulty.
E11
Temperature Sensor Fault
  • Inspect thermistor wiring.
  • Check sensor resistance.
  • Clean sensor area.
  • Replace sensor if readings are abnormal.
E12
Moisture Sensor Error
  • Clean moisture sensor bars.
  • Remove lint buildup.
  • Check wiring connections.
  • Replace sensor if faulty.
E13
Drum Motor Error
  • Check drum belt condition.
  • Inspect motor wiring.
  • Test motor rotation.
  • Replace motor if needed.
E14
Overheating Protection Triggered
  • Clean lint filter.
  • Inspect vent hose for blockage.
  • Ensure proper airflow.
  • Allow dryer to cool before restart.
E15
Control Board Fault
  • Reset dryer power.
  • Inspect PCB for burn marks.
  • Check wiring harness.
  • Replace control board if faulty.
E16
Door Switch Error
  • Ensure door is fully closed.
  • Inspect door latch.
  • Check door switch wiring.
  • Replace switch if defective.
E17
Power Supply Issue
  • Check outlet voltage.
  • Avoid extension cords.
  • Inspect power cable.
  • Reset circuit breaker.
E18
Condensation System Error
  • Check moisture drainage system.
  • Inspect water container (if applicable).
  • Clean condenser unit.
  • Replace sensor if needed.
E19
Fan Motor Error
  • Check blower fan operation.
  • Inspect wiring connections.
  • Remove lint blockage.
  • Replace fan motor if faulty.
E20
Airflow Blockage
  • Clean lint filter.
  • Inspect vent hose for blockage.
  • Check exhaust outlet.
  • Ensure proper airflow path.
E21
Motor Overload Error
  • Turn off dryer and allow motor to cool.
  • Check drum load for overloading.
  • Inspect motor for obstruction.
  • Restart after 20–30 minutes.
E22
Lint Filter Blocked
  • Remove and clean lint filter.
  • Check lint buildup inside housing.
  • Ensure filter is properly inserted.
  • Restart cycle after cleaning.
E23
Drum Rotation Failure
  • Check drive belt condition.
  • Inspect drum roller and support wheels.
  • Test motor function.
  • Replace belt or motor if needed.
E24
Humidity Sensor Error
  • Clean moisture sensor bars.
  • Check wiring connection.
  • Restart dryer.
  • Replace sensor if faulty.
E25
Heating Relay Fault
  • Inspect heating relay on PCB.
  • Check wiring harness.
  • Test continuity of relay circuit.
  • Replace control board if needed.
E26
Airflow Sensor Fault
  • Check airflow sensor for lint blockage.
  • Inspect wiring connections.
  • Clean sensor area.
  • Replace sensor if faulty.
E27
Temperature Cutoff Triggered
  • Allow dryer to cool down.
  • Clean lint and vent system.
  • Check thermal fuse.
  • Restart after cooling period.
E28
Condenser Blockage
  • Clean condenser unit.
  • Remove lint buildup.
  • Check water flow (if condenser type).
  • Restart dryer cycle.
E29
Internal Communication Error
  • Reset power supply.
  • Check wiring harness.
  • Inspect PCB connectors.
  • Replace control board if needed.
E30
System Reset Required
  • Unplug dryer for 10 minutes.
  • Check for previous error codes.
  • Restart cycle.
  • Call technician if recurring.

Frequently Asked Questions


Why is my Bosch dryer not starting?
Check if the door is fully closed and latched. Ensure the dryer is plugged in and has power supply. Disable child lock if activated. Check program selection or start button.
Why is my Bosch dryer not heating?
Check if a heat setting is selected. Clean lint filter to ensure proper airflow. Inspect heating element for faults. Check thermal fuse or thermostat if heat is missing.
Why is my Bosch dryer taking too long to dry clothes?
Clean lint filter before every cycle. Check condenser or heat exchanger. Ensure vent hose is not blocked or kinked. Avoid overloading the drum.
Why is my Bosch dryer showing a lint filter warning?
Remove lint filter and clean thoroughly. Check filter housing for buildup. Reinsert filter properly. Reset dryer after cleaning.
Why is my Bosch dryer making loud noise?
Check for loose items inside drum. Inspect drum rollers and bearings. Ensure dryer is level. Remove foreign objects inside drum area.
Why does my Bosch dryer stop mid-cycle?
Check for overheating or blocked airflow. Ensure door latch is secure. Inspect moisture sensor for lint buildup. Reset dryer and try again.
Why is my Bosch dryer not spinning?
Check drive belt for damage. Ensure door switch is working. Inspect motor for faults. Verify drum is not overloaded or jammed.
Why is my Bosch dryer showing water container full?
Empty the water container fully. Check condenser system for blockage. Ensure pump system is working. Reinsert tank correctly after emptying.
Why does my Bosch dryer smell bad?
Clean lint filter and condenser unit. Remove trapped moisture from drum. Run cleaning cycle if available. Check for mold inside seals.
How do I reset my Bosch dryer?
Turn off dryer and unplug for 5–10 minutes. Reconnect power and restart cycle. Clear lint or blockages first. Check if error clears after reset.
Why is my Bosch dryer not drying evenly?
Avoid overloading drum. Separate heavy and light fabrics. Clean moisture sensor strips. Ensure proper airflow inside dryer.
What should I do if Bosch dryer error codes keep appearing?
Reset dryer and clean all filters. Check vent and condenser system. Inspect for blockages or overheating. Contact technician if issue continues.
Important: Always disconnect power before performing repairs. Contact a qualified technician if the issue persists.