What ERROR XX means on your Asko microwave (asko microwave error code)
Asko does not publish what the number in ERROR XX means on any built-in microwave manual we located. OM8334S (p.26), OT8687S (p.34), OP8664A (p.28), and OCM8456S (p.47) all carry the identical generic line: the display gives an error code, ERROR XX, meaning there is a problem in the electronic module; disconnect from the mains for a few minutes, reconnect, reset the clock, and call a service technician if it persists. XX is never decoded in any of them. Asko does not sell a countertop or over-the-range microwave in any market — every unit that can show this code is a built-in OM (microwave only), OCM (combi microwave plus convection), or OCSM (five-in-one steam plus microwave plus convection) model, which matters because combi units share more problem paths (convection element, steam generator) than a simple microwave does. There is a genuine safety reason this page is written more cautiously than the oven pages: the high-voltage side of any microwave, Asko included, stores a charge in the capacitor that can remain dangerous well after the unit is unplugged, and that is not something to test or work around at home.
Symptoms
What your Asko microwave is doing should match the list below if this is genuinely the problem rather than one that only resembles it. The microwave may present one symptom or many, sometimes over several cycles and sometimes right after a power cut, a heavy load, or a recent installation.
- ERROR XX appears on the display, sometimes right after the door is closed and Start is pressed
- the unit may hum or run its fan without heating food at all
- the display may go blank or freeze along with the error
- on OCM or OCSM combi units, the error may appear only when microwave, convection, or steam functions are combined in one cycle
- the code may clear after a mains disconnect and not return for a long period, or may return immediately on the next attempt
Common causes
A single set of symptoms on your Asko microwave can come from any of the causes below, listed with the common ones first. Eliminating them methodically separates the quick checks anyone can make on a microwave from the problems that need trained diagnosis and Asko parts.
- Door interlock switch failure — the microwave will not run, and may post an error, if any of the interlock switches that confirm the door is fully closed are not reporting correctly
- High-voltage capacitor or diode failure — a problem on the high-voltage side that generates microwave energy can trip the control board’s protection logic
- Magnetron failure — a failed magnetron on an older or heavily used unit stops microwave heating even though the fan and turntable may still run
- Control board failure on combi models — on OCM/OCSM units, a problem coordinating microwave, convection, and steam functions together can surface as this same generic code
Troubleshooting steps you can try
Run down this list on your Asko microwave in order before arranging a visit, keeping the easy checks first. Any step on the microwave that involves live voltage, gas, a hot cavity, standing water, or a sealed system is one to leave to an experienced technician.
- Isolate the microwave at the breaker, not just the door or power button, for several minutes, exactly as every manual instructs.
- Reconnect, reset the clock, and run one short, empty-of-obstruction test cycle with a microwave-safe cup of water rather than food.
- Check that the door closes fully and latches without resistance or an obvious gap before running the unit again.
- Note whether the error appears with microwave-only operation, or only when a combi function (convection or steam) is added, on OCM/OCSM models.
- Do not attempt to open the cabinet, remove covers, or probe inside the unit yourself under any circumstances — the high-voltage capacitor can hold a lethal charge even when the microwave is unplugged.
- If ERROR XX persists after one clean reset, stop using the unit and book a technician rather than repeating the reset.
Parts a technician may replace
Depending on what the diagnosis turns up, a technician working on your Asko microwave may inspect, test, or replace the high-voltage capacitor, magnetron, high-voltage diode, door interlock switches, and turntable motor. The correct part for your microwave is matched from its model, serial, and Art. No., and genuine OEM or trusted-supplier components go back in rather than generic substitutes, so the microwave keeps its performance and its long service life.
When to call a technician
A technician discharges the high-voltage capacitor safely before testing it, checks the magnetron and high-voltage diode, verifies all door interlock switches, and on combi units confirms the control board is correctly sequencing microwave, convection, and steam before returning the unit to service. Given the High-severity rating, do not keep restarting your Asko microwave; stop, arrange prompt service, and cut power or water to the microwave at the source the moment anything seems unsafe. As an independent repair service, we are not affiliated with Asko, Gorenje, or Hisense; your microwave is looked after by experienced technicians using genuine OEM or trusted-supplier parts, with a 30-day labor warranty on the work we do. The Art. No., alongside the model and serial on your Asko microwave, is what lets us order the right part for your microwave before we arrive and put ERROR XX right without unnecessary return trips.
Related help and Asko resources
To settle a stubborn ERROR XX on your Asko microwave, book Asko microwave repair, explore our further microwave error-code guides, consult our step-by-step repair guides, schedule service at your convenience, or find coverage on our locations page. Full product details for your Asko microwave live on the manufacturer’s site at global.asko.com.
