V-ZUG General Heating Circuit Failure Without Error Detection

Oven does not heat at all in any mode, but no error code is displayed; fan and light may still work.

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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, Failed main heating relay, Open neutral or phase at terminal block, Multiple heating elements failed simultaneously

How to Fix / Troubleshooting

Safety first: Turn off the circuit breaker and verify the oven is de-energized before opening any panels.

Step-by-step checks:

  • Check terminal block: Inspect the mains connection block for loose screws or burnt terminals. Tighten and replace damaged parts as needed.
  • Inspect thermal cut-out: Locate the cavity thermal limiter on top of the oven. Reset if it has a manual reset button; replace if open and non-resettable.
  • Test elements: Measure resistance of top, bottom, and ring elements. Replace any that are open-circuit.
  • Check power module: If all elements and thermal devices are good, the main power relay or PCB is likely faulty and should be replaced.

When to call a technician: If you cannot identify a simple cause, contact an authorized V-ZUG technician for full diagnostic testing.

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Repair Difficulty

Hard 4/5

Required Part

Power Module / Thermal Cut-Out
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