Bosch Induction Hob Error Displayed: Identify the Code Safely

Use only checks that match the exact appliance or system and its official guide.

1. Check 1

   Write down the exact error display, the cooking zone involved, whether the displays are flashing or beeping, what cookware was present, and whether the hob had just been used at high power. Take a clear photograph of the panel if it can be done without touching hot glass.

   Expected result: The same general complaint can represent a wet panel, child lock, demo mode, overheating, supply fault, or an unlisted electronics fault. The exact characters and timing distinguish those branches.

   Next step: Continue to the matching visible condition below. If the glass is cracked, the panel is smoking, or the code is accompanied by burning smell or repeated tripping, stop immediately and arrange service.

   Stop if: Stop for cracked glass, smoke, burning smell, sparking, or water entering the hob.

   Why this matters

   Why: Bosch directs users to identify the precise fault code and have the cooktop model number ready if the code is not listed.

2. Check 2

   If all displays are flashing, switch the hob off at its normal control if it responds, then inspect the dry, cool control area for spilled liquid, condensation, or an object resting over a touch key. Remove only the object and wipe the accessible surface dry with the appliance off.

   Expected result: Bosch identifies a wet control panel or objects lying on it as a cause of all displays flashing. If the display clears after the panel is dry and clear, the warning was likely caused by the control surface rather than an internal component.

   Next step: Retry one zone only after the surface is dry and clear. If the display returns without a spill or obstruction, stop and arrange service; do not open the hob.

   Why this matters

   Why: The panel must be dry and unobstructed for touch controls to interpret input safely.

3. Check 3

   If a key or padlock symbol is shown, check the model manual for the child-lock control and use only the documented touch-and-hold command with the hob cool and clear. Do not force the glass or repeatedly press unrelated controls.

   Expected result: A key symbol indicates that the child lock is active, so a cooking zone may not respond even though the hob has power. When the lock symbol clears, the controls should accept a normal zone selection.

   Next step: If the model-specific lock command does not clear the symbol, record the model and code and arrange Bosch or qualified appliance support rather than trying to bypass the lock.

   Why this matters

   Why: This is a control-state condition, not evidence that an induction coil or power board has failed.

4. Check 4

   If the code is dE and the zones do not heat, check the model manual for demo mode. If a zone shows F1, F6, F2, F4, E7015, F5, U2, or U3, remove cookware from the control area where indicated and let the electronics or zone cool completely before trying one normal operation.

   Expected result: Bosch associates dE with demo mode on applicable models; F1/F6 and U2/U3 indicate an overheated zone, F2/F4/E7015 indicate overheated electronics, and F5 can indicate hot cookware near the control panel.

   Next step: Retry once only after cooling and clearing the control area. If the code returns, the hob does not restart, or the glass is damaged, stop use and arrange qualified service.

   Why this matters

   Why: These messages may be protective or configuration states, but a recurring code after cooling is evidence that the underlying condition remains.

5. Check 5

   If the cookware or power-level display flashes without a clear fault code, center a suitable pan on the selected zone, keep it away from the touch controls, and check the model manual for the zone-size and cookware requirements. Do not test the hob with damaged or unstable cookware.

   Expected result: Bosch explains that induction zones may not detect cookware that is not magnetic, too small, or poorly placed. A correctly detected pan with a normal power indication points away from a general control failure.

   Next step: If the same compatible pan is still not detected on more than one zone, record the display and stop further tests; arrange qualified service.

   Why this matters

   Why: Induction heating depends on cookware detection, so a flashing level can be a pan or placement issue rather than an error in the hob electronics.

6. Check 6

   If the display shows an unlisted E or F code, E9000, E9010, U1, or U400, do not attempt voltage measurements or repeated breaker resets. If the hob is safely accessible and the model manual permits one reset, use only that documented procedure; otherwise leave it off and record the code.

   Expected result: Bosch treats an unlisted E or F code as a fault requiring the precise code for support. E9000, E9010, U1, and U400 indicate supply-voltage conditions outside the normal range and are not user-adjustable settings.

   Next step: Arrange a qualified electrician or appliance technician as appropriate, especially if the circuit trips or the code returns. Do not remove the hob or its electrical cover.

   Stop if: Stop immediately for repeated tripping, heat at the switch or cable, smoke, or any visible electrical damage.

   Why this matters

   Why: A recurring or supply-related code can involve the installation or internal electronics; guessing at a reset or component replacement can create a shock or fire hazard.