Microwave runs but does not heat food; turntable and light work normally, no error code displayed.

Critical safety warning: The high-voltage system inside an OBH Nordica microwave is extremely dangerous. Do not attempt to test or replace the magnetron, capacitor, transformer, or diode unless you are a trained technician.

• Step 1 – Confirm symptom: Place a cup of water in the oven and run on full power for 1–2 minutes. If the water remains cold and the turntable and light operate, the issue is in the heating circuit.
• Step 2 – Check door function: Ensure the door closes firmly and that the door switches click. A faulty door switch can also prevent high-voltage activation.
• Step 3 – Visual inspection only: With power disconnected and cover removed, look (without touching) for burnt wiring, arcing marks, or a blown high-voltage fuse (often in a plastic holder near the transformer). Do not handle the capacitor terminals.
• Step 4 – Professional repair: Because diagnosis requires high-voltage testing and capacitor discharge, contact an authorized OBH Nordica service center. Provide the model number and describe that the unit runs but does not heat.
• Step 5 – Replacement decision: On older or low-cost models, replacing the magnetron or transformer may approach the cost of a new unit. Ask the technician for a repair vs. replace estimate.