I just swapped out SAME cooling unit. Note tat the heaters plug into the main board... yellow & black in pairs..Meaning two yellow on one set of spade connectors, e.g. from left to right yellow, yellow, black Black or other way around.
Should state in the instructions. I just can't recall at the momment.
After I fired her up, the fans on the back kicked in after about 20 minutes....
This was on a Saturday afternoon, late. By Sunday AM the sucker was frozen solid in the freezer! Great units!
Can you switch to Propane till you get the heater issue resolved? Can you use an original heater element till you get a replacement? My original elements where still functional BUT i was unable to remove from original cooling unit. Rusted in tight!
Keep us posted.