06-22-2016, 04:32 AM
Ken,
The triggers for the external relays are driven from the old 120V wires that used to drive the compressors.
So, without disturbing the board itself, the connections and wires that were used to drive the compressors are now removed from the compressors and used to trigger a pair of external relays which have an inputs from the same AC that supplies the board and outputs that go to supply the compressors. (Clear as mud, I know!)
I am not aware of any 24V in this system.
Bill
The triggers for the external relays are driven from the old 120V wires that used to drive the compressors.
So, without disturbing the board itself, the connections and wires that were used to drive the compressors are now removed from the compressors and used to trigger a pair of external relays which have an inputs from the same AC that supplies the board and outputs that go to supply the compressors. (Clear as mud, I know!)
I am not aware of any 24V in this system.
Bill
Bill Johnson
Birmingham, Alabama