lubbockguy1979
Newbie
That should work. On a refrigeration unit we typically set the fans to come on at 100-120 ambient temps. So for r12 probably aroind 150ish. The fan likely will only run while driving slow or at a traffic light. You might have to play with the temp setting also based of the size of the fan. If the fan is not large enough you might drop the temp further to get a head start. Id also wire in a toggle switch while your doing it incase of a tstat failure as well for a backup
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