E27
Bosch Dryer
Severity: ModerateWhat Does This Error Mean?
E27 on a Bosch dryer means the air entering the dryer drum is already too warm. This is uncommon in normal use but can occur if the dryer is installed in a very hot room or in direct sunlight. The dryer pauses to protect the laundry.
Affected Models
- Bosch WTW87565GB
- Bosch WTH84000GB
- Bosch Serie 6 and Serie 8 Condenser Dryers
- Bosch Heat Pump Dryers
Common Causes
- Dryer installed in a room that is too hot (above 35 degrees C ambient)
- Dryer in direct sunlight causing the inlet area to overheat
- Dryer installed next to a boiler or heating appliance
- Inlet temperature sensor faulty — reading too high even in normal conditions
- Dryer used immediately after another appliance raised the room temperature significantly
How to Fix It
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Move the dryer to a cooler location or improve ventilation in the room.
Bosch dryers are rated for ambient temperatures of 2-35 degrees C. A utility room in summer or a garage in hot climates can exceed this range.
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Allow the room to cool before restarting the dryer.
Open windows or use a fan to bring the room temperature down. Once the ambient temperature is within range, E27 should not return.
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If E27 appears in a normally cool room, call a Bosch technician.
The inlet temperature sensor may be faulty. A technician will test the sensor resistance and replace it if needed.
Frequently Asked Questions
What ambient temperature is safe for a Bosch dryer?
Bosch dryers are designed to operate in ambient temperatures between 2 and 35 degrees C. Below 2 degrees C the dryer may not operate efficiently. Above 35 degrees C the dryer may trigger E27 or similar overtemperature alerts.