Bosch Microwave ER4: Extreme Overheating and What to Do
ER4 on a Bosch microwave is a critical overheating shutdown. Why to keep the door shut, cut the power and stay off a reset until it is inspected.
Important safety information for faulty appliances
ER4 on a Bosch microwave is a critical overheating shutdown. Why to keep the door shut, cut the power and stay off a reset until it is inspected.
E115 on a Bosch oven is a critical safety shutdown after the oven passed its safe temperature. What to do in the first minutes, why not to reset it and who fixes it.
F4 on a Bosch cooktop means all the electronics have overheated and every zone shut down. How to cool and ventilate it safely, and when a dead fan or a tight install is the cause.
E9000 means the cooktop detected dangerous incorrect supply voltage — stop using it immediately. Why this points at the house wiring and what to check first.
A recall is scoped by model and production code, so only your own data plate can answer it. Where the plate is, which numbers matter, and what to do while you wait.
E005 means the display has lost communication with the control board. Why an unresponsive panel on a cooking appliance is a safety issue, and how to power cycle it properly.
Lint, not a faulty appliance, is what makes dryers dangerous. What to watch for, how often to clear the duct, and why a tripping thermal cutoff is a warning.
How to prevent and respond to Bosch dishwasher water leaks — AquaStop, E15, and flood prevention.
Critical safety information for Bosch oven overheating — E115, Er1, and what to do in an emergency.
How to prevent flooding from your Bosch washer — E23 response, hose inspection, and best practices.
If you have read the guide and still need assistance, we can help connect you with qualified service.