Induction cooktops are one of the biggest loads in a kitchen, and they contain power electronics that can leak small currents to earth. When the safety switch trips as you turn on a zone, the cause can be the cooktop, the circuit, or the protection itself.
If a single reset doesn't fix it, call 0421 772 661. We test cooktop circuits across the Inner West from our base in Hurlstone Park.
If the cooktop glass is cracked, there's a burning or hot-plastic smell, or liquid has run down into the cabinetry beneath, stop using it. Switch it off at the switchboard and leave it off. If there's smoke or fire, get everyone out and call 000. Never throw water on an electrical fire.
Don't remove the cooktop from the benchtop or open anything to look at wiring. A cooktop is hard-wired; its connections are for a licensed electrician only.
Is it the safety switch, the cooktop's circuit breaker, or the main switch? Note which one before you reset it.
Turn it back on. If it trips again immediately or when you switch on a zone, leave it off and arrange testing.
A boil-over that's run under the edge or into vents can cause tripping. Wipe up spills with the cooktop off and cool, and let everything dry before trying again.
If it resets and holds, turn on one zone at a time at low power. If one particular zone or the boost setting always trips it, note that for the technician.
Many kitchens share one RCD between several circuits. Turn off or unplug other kitchen appliances and see if the tripping stops.
Spills and moisture. Liquid that finds its way past the glass seal or into the cooling vents can create a leakage path. Sometimes drying out solves it; sometimes the electronics are damaged and need the manufacturer's service.
Leakage adding up on a shared RCD. Induction cooktops naturally leak a small amount of current through their internal filters. Add a dishwasher, fridge and oven on the same safety switch and the total can approach its trip point. Giving the cooktop its own RCBO usually solves this cleanly.
Wiring and connection faults. A loose or overheated terminal at the cooktop's isolator or at the switchboard, damaged cable in the cabinetry, or an undersized circuit can all cause tripping. This is our job: we test insulation, tighten or replace terminations and confirm the cable suits the cooktop's rating.
Internal cooktop faults. If the circuit tests clean and the cooktop still trips the RCD on its own circuit, the fault is inside the appliance. That's a repair for the manufacturer's warranty or service network.
Call a licensed electrician if the safety switch trips more than once, if the breaker trips on high settings, if the isolator switch near the cooktop feels warm, or if tripping began after a kitchen renovation or new appliance.
We check the circuit size against the cooktop's requirements, the protection type and what shares it, and the condition of the connections. Our guide on induction cooktop wiring requirements explains what the circuit should look like.
Boost draws the most current. If a breaker trips, the circuit may be undersized or have a loose connection. If the safety switch trips, leakage increases under load. Both need testing.
Not necessarily. It may be sharing an RCD with too many other appliances, or the circuit may not suit it. Check the installation before returning the cooktop.
Yes, it normally needs a dedicated circuit sized to its rating. The installation manual states what it requires.
No. The safety switch protects people from electric shock. Leave it in place and get the cause found.
We fix the supply, protection and connections. Faults inside the cooktop go to the manufacturer's service network.
NSW Electrical Contractor Licence 332956C · Fully insured · Since 2016 · Based in Hurlstone Park
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