Ge fridge It made a loud whirring noise then stopped the freezer works fine but not the refridgerator the fan in bottom seems to be working. Fridge on top freezer on bottom

There is a set of coils in the front down at the bottom behind a plastic cover. Sounds like they need to be cleaned with a steel brush.

There is an air duct that connects the fridge to the freezer. A fan circulates air to cool the refrigerator.
The inside fan has stopped working or is blocked by ice.
Defrost the freezer. If the fridge starts to work properly then you have an auto defrost problem. If the fridge still does not work then there is a faulty fan.
A technician can help you there

there is a evaporator defrosting problem; ice building-up. the evap fan is mounted right on top of the evap coil. this will get progressively worse; and, the fan will get completely jammed with ice; and stop altogether. your fridge will get warm and the freezer will not cool properly. you should get it looked at asap..

check gaskets for air leaks or blocked drain in freezer section

Had a similar problem with my Kenwood Fridge Freezer
If you're mechanically minded you could check if there's an opening and motorised flap (usually behind a cover) at the top of the fridge - Cold air from the freezer enters the fridge through this flap) The Sound you heard could have been the motor trying to open / close this flap. This flap can become frozen in the closed position - so cold air is unable to enter the fridge compartment) My fix was to thaw it with a hairdryer and reassemble. Another fix would be to empty the freezer and open the doors - it might take more than 24 hours but once completely defrosted if the flap is the issue it will have defrosted. Once plugged in again the door will open and cold air will start to flow into the fridge compartment. I had a quote for €195 for a call out / repair
I fixed it myself in an hour - Hope it works for you ...

The problem is a buildup of ice on the plastic housing (the curved plastic bit) in the back of the freezer under the fixed shelf where the icetub goes. The fan behind this plastic housing is hitting the ice when the defrost comes on.

Unplug the fridge, unpack the freezer, remove the four screws in the back, take off the sheetmetal backing and let the fridge thaw. You can remove the plastic piece after a while and get the ice off (be careful not to remove the styrofoam insulation by going too quickly).

Reassemble and you're back in business, for a few months. I'm never buying Samsung again myself.

i don't know jennair specifically being from england.
however, there is often a fan inside the back panel and the noise you heard was the fan hitting ice. the reason now not heard and fridge not working may be that the ice has built up so much the fan is jammed

Sounds like the freezer fan is rubbing some wires or possible some foam insulation around the fan. I would look into the freezer compartment fan and go from there. The fan Will Shut off when you open the doors. Let me know how you make out and if you need anymore help.

Thanks,
Bill

its a heater cycle problem..the defroster is not working properly. its building up ice in the evaporator that touches the evaporator fan that makes that loud noise but stops when you open a door. it could be either a bad heater, a bad thermo disc or a bad timer.hope i was able to help