Bosch Dryer E03 Error: Condensation Tank Full
What Does Bosch Dryer Error Code E03 Mean? Error code E03 on a Bosch dryer simply means the condensation water tank is full. Bosch condenser and heat pump dryers collect moisture from clothes in a removable tank. When it fills up, the dryer pauses. What You Can Do Pull out the water tank, empty it […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Yes. Simply empty the tank and the dryer will resume normally.
Can I reset the code?
Yes. The error clears automatically once the tank is emptied and properly reseated.
When to stop immediately?
Stop if you notice: Tank is empty but error persists, Float switch appears stuck.
Symptoms You May Notice
Dryer stops and indicator light comes on
The dryer pauses mid-cycle and the water tank indicator illuminates on the display.
Drying cycle won't restart
Pressing Start has no effect until the water tank is emptied.
Possible Causes
Full water tank
The condensation tank has filled up during the drying cycle and needs to be emptied.
DIY PossibleTank float switch stuck
The float sensor inside the tank is stuck in the full position even when the tank is empty.
Requires ProfessionalSafe Checks You Can Do
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1
Empty the water tank
Pull out the condensation water tank (usually at the top of the dryer), empty it into a sink, and replace it.
Empty the tank before every drying cycle to prevent interruptions.
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2
Check the tank seating
Ensure the tank is fully pushed in and seated properly after emptying.
A misaligned tank can trigger the full sensor even when empty.
When to Call a Professional
Contact a qualified technician if:
- Error persists with empty, properly seated tank
- Float switch does not move freely
- Tank housing is cracked
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