Bosch Cooktop E9000 Error: Incorrect Supply Voltage
What Does Bosch Cooktop Error Code E9000 Mean? Error code E9000 indicates a voltage supply problem. The cooktop requires 240V and has detected voltage outside the acceptable range. What You Can Do Check the circuit breaker — it should be a double-pole breaker with both poles firmly on. Reset it if tripped. When to Call […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. Incorrect voltage can damage the cooktop electronics. Do not use until voltage is verified.
Can I reset the code?
Yes. If caused by a tripped breaker, resetting it resolves the issue.
When to stop immediately?
Stop if you notice: Cooktop is completely unresponsive, Zones heat then shut off.
Symptoms You May Notice
Cooktop won't power on
No zones respond, no lights, no display — the cooktop is completely dead.
Zones heat intermittently
Some zones work briefly then shut off as voltage fluctuates.
Possible Causes
Incorrect wiring
The cooktop is wired to the wrong voltage (e.g., 120V instead of 240V).
Requires ProfessionalCircuit breaker issue
A partially tripped breaker or failed leg of a 240V circuit.
Requires ProfessionalSafe Checks You Can Do
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1
Check the breaker
Verify the cooktop circuit breaker is fully in the ON position. Turn it off and back on.
A 240V cooktop uses a double-pole breaker — both poles must be on.
When to Call a Professional
Contact a qualified technician if:
- Voltage at junction box is not 240V
- One leg of the circuit is dead
- Wiring errors during installation
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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