OBH Nordica Heater Control / Relay Failure

Timer counts down but there is no heating; food remains cold.

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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

Failed heater relay on PCB, Broken heater wiring, Disconnected temperature sensor causing safety lockout, Firmware glitch

How to Fix / Troubleshooting

Safety first: Unplug the cooker and allow it to cool before opening the base.

  • Listen for relay click: When starting a program, you should hear a soft click from inside. If not, the relay may not be energizing.
  • Inspect heater wiring: Remove the bottom cover and check that the heater wires are firmly connected and not burnt.
  • Check sensor connection: Ensure the NTC sensor connector is properly seated; some models will not energize the heater if the sensor is disconnected.
  • Reset power: Unplug for 10 minutes and retry. If the timer still runs without heat, the heater relay or control circuit likely needs board-level repair or replacement.
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Repair Difficulty

Hard 4/5

Required Part

Main Control PCB
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