Hob showing error code
When your hob displays an error code — E, F, H or flashing digits — it is the built-in self-diagnostics system reporting a specific fault. These codes can appear on induction, ceramic and gas hobs from all major manufacturers: Bosch, Siemens, Electrolux, AEG, Whirlpool, Gorenje, Beko and IKEA.
The most frequent causes are a faulty NTC temperature sensor, IGBT power module overheat protection activation, pan detection sensor malfunction, unstable mains voltage, and a communication breakdown between heating zones on the control board. Each manufacturer uses its own code system: Bosch and Siemens use E and F series, Electrolux and AEG use codes with the letter E, Whirlpool uses F codes, and Gorenje uses flashing indicator lights.
We decode the codes from every major manufacturer and run diagnostics with a multimeter and oscilloscope to pinpoint the faulty component. We always agree on the repair cost before starting work. If the repair is not economically worthwhile, we say so honestly and return the appliance with no obligation. All completed work carries a 3-month warranty. Bring your hob in — we will decode any error code.
Likely causes
- Temperature sensor (NTC) failure — The NTC temperature sensor measures the zone temperature and reports data to the control board. If the sensor has failed or its resistance has drifted from the nominal value, the board receives incorrect readings and displays an error code — typically E3, E4 or F2 depending on the brand. Replacing the NTC sensor resolves the issue in a single visit.
- IGBT overheat protection triggered — The IGBT power module drives the induction coil, and when the temperature exceeds safe limits it activates a protective shutdown with an error code. The cause may be blocked ventilation beneath the panel, dust accumulation on the heatsink, or a failed cooling fan. Cleaning and restoring ventilation often resolves the issue without component replacement.
- Pan detection sensor malfunction — Induction hobs detect the presence of cookware on the heating zone using a dedicated sensor. If the sensor is faulty, the hob may refuse to activate the zone or display an error even with compatible cookware placed on it. Diagnosing the sensor and checking the coil determines the specific cause and whether replacement is needed.
- Power supply voltage out of range — Hobs are sensitive to voltage spikes and drops. If the mains voltage falls outside the acceptable range (typically 210–240 V), the control board logs an error and locks operation to protect the electronics. The problem may lie in the household wiring, a weak circuit breaker, or an unstable supply in the building.
- Control board communication error between zones — In modern hobs, heating zones exchange data via a bus on the control board. If contacts have oxidised, a ribbon cable is damaged, or a microcontroller in one zone has failed, a communication error code appears. We diagnose each zone individually, check ribbon cables, and repair or replace the board as needed.
Try this first
- Note the exact error code on the display — letters, digits, and which indicators are flashing — this is the key information for the technician
- Turn off the hob for 5 minutes, then restart — some errors are one-off glitches that clear after a power cycle
- Check whether all zones show the error or just one — if only one zone is affected, the problem is localised to that zone rather than the main board
- Make sure the hob is connected directly to a wall socket, not through an extension cord — induction hobs require stable power without intermediate connections
- Check whether your cookware is induction-compatible — hold a magnet to the base: if it does not stick, the pan is not compatible with an induction hob
When to bring it in
If after restarting and checking the error code reappears, bring the hob to the SATER service centre. Do not delay especially if the hob is completely locked out, if the error appears immediately upon power-on, or if you notice a burning smell. We will decode the error, carry out diagnostics, and agree on the repair cost before starting work. 3-month warranty on all repairs.
Fast on-site diagnostics. Warranty: 3 months.
Brands we repair
FAQ
Why customers choose SATER
- Built-in and freestanding appliances. We repair both — built-in ovens, hobs and microwaves.
- Ovens, cookers, microwaves, coffee machines — all under one roof. One service centre for all your kitchen and household appliances.
- Original and compatible spare parts. We use OEM parts or proven alternatives — depending on the task and budget.
- 30+ years of experience. The service centre has been operating since 1993.
- We serve all of Latvia. Electronics service centre in Riga — we accept devices from anywhere in the country.