Range Hood Diagnostics
Bosch Range Hood
Bosch Range Hood
Error Codes
Meanings, severity levels, safe checks you can perform, and when to call a technician.
Enter the code shown on your range hood display
Is it safe to keep using it?
Depends on code severity. Low/Medium codes often allow continued use, High severity requires immediate stop.
Can error codes be reset?
Some codes clear after power cycle. Persistent codes indicate underlying issues needing repair.
When should I stop using it?
Stop immediately for water leak codes, burning smell, or any High severity error.
Most Common Codes
All Codes
Error Code Directory
Click any code for detailed troubleshooting steps
Low
Medium
High
Code
Meaning
Severity
Common Symptom
FAN-FAIL
Fan Motor Failure
High
The hood appears to turn on but no suction is felt when placing your hand near the filter area.
View
FAN-NOISE
Abnormal Fan Noise
Medium
An unusual noise that increases with fan speed, different from the normal airflow sound.
View
NO-LIGHT
Light Circuit Failure
Low
The fan operates normally at all speeds, but pressing the light button produces no light.
View
NO-POWER
No Power at All
High
No response from any controls — no lights, no fan, no display illumination.
View
SWITCH-FAIL
Speed Control Failure
Medium
Pressing different speed buttons has no effect — the fan stays at one speed or won't respond.
View
VENT-BLOCK
Ductwork Blocked
Medium
The fan runs but cooking smoke and steam linger in the kitchen instead of being exhausted.
View