11-25-2016, 11:59 AM
Just for grins, you could switch boards between the two units to see if the problem follows the board.
If you do take the board out. Look carefully at the backside for any hot spots, especially leading from the power in connectors to the compressor relay.
I can't wait till you figure this one out, I am very curious as to the problem. I studied the schematic this morning and read the manuals several times. I am not smart enough to noodle through the schematic and figure out why switching the leads to the compressors would have any effect on why the fans don't come on.
There is a bit of logic in the board, that the compressor will not turn on under two circumstances. One, if the condensor and evap fans are not running. Two, three minute shutdown after power down to prevent starting the compressor against a high head pressure. I just don't know how that figures into your situation.
If you do take the board out. Look carefully at the backside for any hot spots, especially leading from the power in connectors to the compressor relay.
I can't wait till you figure this one out, I am very curious as to the problem. I studied the schematic this morning and read the manuals several times. I am not smart enough to noodle through the schematic and figure out why switching the leads to the compressors would have any effect on why the fans don't come on.
There is a bit of logic in the board, that the compressor will not turn on under two circumstances. One, if the condensor and evap fans are not running. Two, three minute shutdown after power down to prevent starting the compressor against a high head pressure. I just don't know how that figures into your situation.
Richard and Rhonda Entrekin
95 Newell, 390 Ex caretaker
99 Newell, 512 Ex caretaker
07 Prevost Marathon, 1025
Maverick Hybrid Toad
Inverness, FL (when we're home
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