We have a whirpoll electric oven model number RMC275 or RMC 305. We live in Mexico and when the power goes out the oven door locks and we usually get a meassage that has F1or F5. Sometimes we put it on the cleaning cycle and leave it on for 5 minutes turn it off and after it cools down the door will unlock but now we can't even get it to do that? Any suggestions ?