Sellers are required to guarantee that your appliances are in good working order on the day of closing. What happens if the fridge breaks two days later?
Any damage that occurs after the date of closing is the responsibility of the buyer. So, that stove is your repair cost. There are companies that will do specific insurance for appliances to cover any damage occurring around the purchase; if you are concerned about the age or state of the appliances, you should consider investigating the cost of these policies.