I have a cornelius ctx-25 flash cooler but the stirrer/agitator will not turn off. If I turn off stirrer at switch it seems to move at normal speed but will not stop. If I turn stirrer "on" it spins at crazy speed and is very noisy. Will it work ok with the stirrer running all the time? If I very slowly turn cooling to 6 the stirrer stays at normal speed, but turn quickly the stirrer spins like mad again 
. If I turn cooling to full at 7 the stirrer will just spin like crazy.
. If I turn cooling to full at 7 the stirrer will just spin like crazy.
