Gram Main Power Supply to Heating Circuit Fault

Oven does not heat in any mode; light and display work normally.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Tripped thermal cut-out, Faulty oven function selector switch, Broken wiring to elements, Failed electronic oven control relay

How to Fix / Troubleshooting

Safety first: Disconnect mains power before removing panels. Elements and wiring can be live even if not heating.

  • Check thermal cut-out: Locate the safety thermostat/thermal cut-out on top of the oven cavity. Some are manual reset types with a small button; press to reset if tripped.
  • Test selector switch: With the oven disconnected, remove the control panel and test the function selector switch for continuity between common and output terminals in each position. Replace if no continuity where expected.
  • Inspect wiring: Check for burnt or broken wires from the selector/EOC to the heating elements. Repair with high-temperature wire and proper connectors.
  • Control relay: On electronic models, listen for a relay click when starting a heating cycle. If absent and elements test good, the EOC relay may have failed and the board should be replaced.

Warning: Do not bypass thermal cut-outs; they protect against overheating and fire.

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Repair Difficulty

Hard 4/5

Required Part

Oven Function Selector Switch
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