Kitchenaid Model KBFA02ERSS01.

Is it possible for the reservoir for the in refrigerator water dispenser to become frozen? Today my in refrigerator chilled water dispenser stopped working but the lights for filter replacement have not come on saying it needs to be replaced. I then noticed that a couple of drink bottles on the top shelf at the back were frozen and it got me to wondering if the reservoir has become frozen as well?

I turned off the ice maker just in case I have a serious problem to try and protect the ice maker. I unscrewed and rescrewed in the same filter since its the only one I have until the ones I ordered come in.

I also pulled the center plate on the control unit on the top shelf and pushed the little rectangle panel inside and heard something kick in like it was running making the sound I am pretty sure I hear whenever I have finished using the dispenser like maybe its a pump or something filling up the reservoir? but still no water.

If the reservoir has become frozen how do I access it to unthaw it?

I bought the house a few months ago and have not replaced the filter but have ordered a couple tonight. I also ordered a replacement valve bypass since I have not found one in any of the drawers just in case. I also went online and downloaded the schematics and manual for the refrigerator and am studying them trying to familiarize myself with the internal workings of the refrigerator. I am trying to eliminate possible causes... What else can I try while awaiting replacement filter?

I am fairly handy have taken apart and successfully fixed over the years washing machines, dishwashers, air conditioner blowers, pool pumos, car oil pumps, etc so any helpful suggestions would be appreciated in trying to pin down my problem.