Smooth glass electric cooktop built into a wooden counter

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Electric range partly works: display on, oven or big elements won't heat

An electric range runs its electronics and lights on 120 V (one hot leg to neutral) but heats with 240 V across both legs. If one leg is lost, the range looks alive but cannot heat properly. Typical causes are half of the double-pole breaker tripped or failed, a burned terminal block or cord connection, or a damaged receptacle. A building on 208 V will heat, just more slowly.

Cross-checked ~45 min moderateBrands: All

Before you start

Turn the range breaker fully OFF and verify both legs read 0 V before opening the terminal block cover or moving the range
Live voltage checks at the receptacle or terminal block are for trained techs only; keep fingers off the lugs
Melted or blackened terminal block, cord or receptacle: leave the power off; receptacle and branch-circuit repair is electrician work
Never bypass a burned connection or add a 'jumper' to restore a leg

Diagnostic steps

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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