Relay and Sensor Replacement for Electric Cooktop in Warsaw

A burner won’t switch on, heats at full power without regulation, or cuts out randomly? A failed relay or temperature sensor is often the cause. The relay controls the power supply to the burner while the sensor monitors the surface temperature. When either fails, the burner behaves unpredictably. We diagnose and replace these components on site across Warsaw — from Bemowo to Praga-Północ.

How much does it cost and what affects the price

The cost depends on the cooktop type (ceramic, induction, conventional), number of faulty components and model. Current prices in the table below. The service includes multimeter diagnostics; parts are charged separately. Warning: electric cooktop work involves high voltage — do not attempt repairs yourself.

How the relay / sensor replacement works

1. You describe the issue — which burner is affected and what happens.
2. The technician identifies the model and brings the right components.
3. We disconnect the cooktop (switch off the breaker — cooktops have a dedicated circuit).
4. We lift the cooktop out of the worktop to access the board and wiring underneath.
5. Relays and sensors are tested with a multimeter to locate the faulty part.
6. The relay or sensor is replaced; if needed, we re-solder board traces.
7. The cooktop is refitted, powered on, and all burners tested at various power levels.

Common mistakes

• Confusing a relay fault with a burner failure — replacing an expensive element when the cheap relay is to blame.
• Attempting DIY repairs — electric cooktops run on 220–380V, posing a lethal risk.
• Buying a relay without checking ratings — wrong voltage or current.
• Ignoring intermittent burner shutdowns — the first sign of a dying relay.
• Not checking wiring when replacing a sensor — a melted wire can cause repeat failure.

What to prepare

• Find the cooktop model — label underneath or in the documentation.
• Describe which burner is problematic and what it does.
• Switch off the dedicated breaker.
• Clear the worktop around the cooktop.
• Make sure the cooktop can be lifted out (not permanently sealed with silicone).
• Photograph the model and send it to the technician.
• Provide access to the consumer unit.
• If there’s an oven below the cooktop, it may need to be slid out.

A real case from Warsaw

A client in Bemowo reported that the front-right burner on a Bosch ceramic cooktop worked intermittently — sometimes on, sometimes not. The other three burners were fine. On site we removed the cooktop and checked the board — the relay for that burner was sticking. The internal contacts had burnt out and weren’t closing reliably. We replaced the relay and re-soldered hairline cracks on adjacent board traces caused by heat. All four burners tested stable across power levels. The repair took about an hour. Takeaway: if a burner works intermittently, it’s almost always the relay, not the burner itself.

Frequently asked questions

Who does the work

Relay and sensor replacements are handled by technicians experienced in cooktop repair. We cover all of Warsaw with multimeters and soldering stations. Burner playing up? Call us — we’ll diagnose and fix it.