Bosch Dryer E07 — Heat Pump Compressor Fault (Heat Pump Models)
Bosch Dryer · Error code E07
What E07 Means
On heat-pump models, control has detected a compressor fault — failure to start, overload trip, or refrigerant pressure issue. Dryer runs without heat or shuts down.
Symptoms
- No heat on heat-pump model
- Clothes cold at end of long cycle
- Clicking sound from base of dryer
- Cycle ends prematurely
Common Causes
Compressor hums but can't start; capacitor is a common wear item.
Internal klixon trips on overcurrent — often due to refrigerant or ventilation issues.
Loss of refrigerant — requires sealed-system repair by certified tech.
Dust/lint buildup on heat-exchange fins causes high-pressure trip.
Electronics that drive the compressor have failed.
How to Fix It
- Unplug the dryer and allow 10 minutes for capacitors to discharge.
- Remove the kickplate and inspect the evaporator/condenser fins behind the condenser unit — vacuum gently with a soft brush.
- Verify the condenser unit and lint filters are clean.
- Listen at startup — humming with no compressor run suggests capacitor or start relay failure.
- Test the compressor start capacitor with a meter; replace if out of spec.
- If refrigerant leak is suspected (oily residue, no cooling at evaporator), call a certified appliance tech — sealed system work is not DIY.
- If compressor windings test open or shorted, schedule a service call — heat-pump compressor replacement is professional-only.
- Document model and serial before contacting Bosch service — many heat-pump dryers have extended sealed-system warranties.
Parts You May Need
If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.
More Bosch Dryer Codes
Verified against manufacturer documentation: bosch-home.com
Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.