Can you post the model number please.
Ok thanks for that.
Does it feel very cold in the freezer like its at -29?
Ok what this will be is the control board in there. As in there is a thermostat and a control board. Now if a thermostat fails it will get very cold and drop to about -32 degs but you will feel this.
As it feels normal temp and fast freeze isn't selected then you are looking at a faulty control board im afraid.
As its just that that's faulty ive seen it before were they have left it as all the board does is controls fast freeze, light and temperature read out. As its just the temp read out at fault and its actually working fine some people just leave that. But that's up to you if you did want it fixed then you would need to have the control board replaced.