fridge cooling fan is on but fridge is not running
There is a thermoswitch providing power to the fan. If it is still hot on the fridge fin where it is located the fan will continue to run.
That said, they have been known to get stuck turned on. If the fridge compartment and switch is cool to the touch and the fan is still running, it's time to pull the fuse so it won't kill your battery. Leave yourself a note that the fuse is pulled to save troubleshooting time. Don't ask why I know that😀😀
Nite: Some have installed switches to cut off the fan noise, or used quieter computer fans.
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