What Sparking Inside Cavity means on your Asko microwave (asko microwave sparking inside cavity)
An asko microwave sparking inside cavity has two very different possible explanations, and telling them apart matters: metal accidentally placed inside, or a scratched waveguide cover, causes visible arcing that stops as soon as the offending item or cover is addressed; a problem inside the cavity paint, the waveguide cover material breaking down, or a magnetron problem can also cause sparking with nothing obviously metallic present, and that version needs a technician. Either way, the immediate response is the same — stop the cycle.
Symptoms
The symptoms below are the ones that pin this problem on your Asko microwave rather than a similar-looking problem elsewhere in the machine. A microwave can show them one at a time or all together, slowly over weeks or suddenly after a surge, a spill, or a recent install-and-test.
- visible sparks, arcing, or flashes of light inside the cavity during a cycle
- a crackling or popping sound accompanies the sparking
- the sparking may be traced visually to a specific spot, such as the waveguide cover or a metal trim edge
- a burning smell may accompany persistent sparking
- the unit may stop the cycle on its own or continue running despite the sparking
Common causes
Several separate problems can leave your Asko microwave showing these symptoms, so the causes below are ordered from the most to the least likely. Working through them in that order on your microwave tells a quick owner-level check apart from a problem that needs an experienced technician and the right Asko parts.
- Metal object or metallic trim in the cavity — foil, a metal-rimmed dish, or twist ties left inside causes visible arcing that stops once removed
- Damaged waveguide cover — the small cover protecting the waveguide opening, once burned through or heavily scored, can arc even with nothing else in the cavity
- Chipped or worn cavity paint — exposed metal beneath damaged interior paint can arc under the microwave field
- Magnetron problem — a failing magnetron can, in some cases, cause arcing independent of anything inside the cavity
Troubleshooting steps you can try
Attempt the following on your Asko microwave step by step before calling out an engineer. Anything on the microwave that involves mains power, gas, a hot cavity, water, or a sealed component is where you should stop and bring in a qualified technician.
- Stop the cycle and open the door as soon as you see or hear sparking.
- Check for and remove any metal object, foil, or metallic-trimmed dish from the cavity.
- Inspect the waveguide cover, usually a small panel on a cavity wall, for visible burning or damage.
- If sparking happened with no metal present and nothing else obviously responsible, do not run the unit again until it has been checked.
- Book a technician if the waveguide cover shows damage or if sparking recurs with nothing metallic inside.
Parts a technician may replace
A technician diagnosing your Asko microwave may inspect, test, or replace the metal trim or cavity paint, waveguide cover, and magnetron, depending on which one has actually failed. Reading the microwave’s model, serial, and Art. No. before ordering avoids replacing more of the microwave than the problem requires, and keeps the fitted part an exact match.
When to call a technician
A technician inspects the waveguide cover and cavity lining for damage, checks the magnetron, and replaces the affected part before the unit is used again. A High severity rating on your Asko microwave calls for caution: stop using it, arrange service promptly, and isolate the microwave at its power or water supply the instant something looks, smells, or sounds off. Repairs to your Asko microwave are carried out independently, with no tie to Asko, Gorenje, or Hisense; we use experienced technicians and genuine OEM or trusted-supplier parts, and stand behind the labor on your microwave for 30 days. When arranging service, keep your Asko microwave’s model, serial, and Art. No. nearby so we can match the exact part for the microwave in advance and settle Sparking Inside Cavity efficiently.
Related help and Asko resources
A Sparking Inside Cavity that keeps coming back on your Asko microwave is worth a proper look: book Asko microwave repair, scan our other microwave error-code guides, use our step-by-step repair guides, schedule service for an appointment, or check your area on our locations page. Look up your Asko microwave on the manufacturer’s own pages at global.asko.com for full specifications.
