Why does the bottom of the cake get burnt when you make it in a regular rice cooker

Brush some oil on the bottom of the pot and put the cake in it, put the lid on and press the cooker gear, a while after the pot is hot, you brush some oil on the top of the cake and turn it over. At this time in the pan less drizzle some water through the heat of the water vapor to the middle of the cake to get cooked, by the way halfway to remember to turn over, each time after the flip, but also to the top of the less Lin a little bit of water