Combi oven (combination oven)

A combi (combination) oven is a commercial oven that can run convection dry heat, steam, or both together, which is why one cabinet can roast, bake, steam and hold. That versatility comes with a maintenance dependency most operators underestimate: because it makes steam, it's sensitive to water quality, and in the UAE's hard water scale build-up is the number-one cause of poor performance and boiler faults. Routine upkeep is specific: regular descaling (or a working water-softener/filter), checking the door gasket (a perished seal leaks steam and wastes energy), keeping the core probe and calibration accurate, and cleaning the cavity and drain. Neglect shows up as uneven cooking, weak steam and eventually a costly boiler failure, exactly the pattern behind most 'our combi isn't right' callouts. Descaling, gaskets and calibration are part of routine kitchen equipment maintenance, not a fix-when-it-breaks item.