returned for service found error 26 on combi oven, drain valve not closing, installed new touch screen steam ignition and meat probe with new touch screen. Tech could access programming, set unit back to factory specs - tested drain valve, no response on opening and closing, will order part. 8/21/19 returned for service, pulled unit out to access drain valve, had to remove drain from oven to remove drain valve, replaced drain valve, tested in all functions, tested good.