| MOST
pcboards have jumpers. Jumpers tell the board what
components or model you are installing this board into.
Manufacturers make a board that might have many model
applications. Besides the chip programming, it can also
have jumpers you have to set. |
| On hot tubs
made by the Jacuzzi Whirlpool Bath division, the board
LIKELY needs to have you check the old board jumpers and
match the new. To
do so, first look for your jumpers. |
|
 |
| The above
has TWO jumpers. One on the left is labeled "MODE" and
has the 20a/50a jumper. |
| The one on
the right is labeled "FILTER" and has "B" and "A" |
| First, the
one on the left will tell the board whether you are
using 110-120vac (20a) OR 220-240vac (50a). This is
critical. |
| The one on
the right tells the board how long you want the filter
cycle to be. 2 or 5 hours twice a day. |
| |
|
Looking from the side, these
2 jumpers look like this: |
|
 |
| As shown,
the jumper on the left connects the center wire and the
wire on the far left. The jumper on the right connects
the center wire and the jumper on the far right. This
would tell the board voltage and filter cycle. If you
had different needs, you would move the jumper and
connect the center wire and the other wire. |
| EXCEPTION:
On a few "jumpers", there are only TWO wires (not the 3
shown above). In these cases, if the 2 wires are
connected by the jumper, it means one thing. If the 2
wires are not connect at all, another. |
|
Setting your jumpers is critical. So matching the new
board to the old is critical. |
| |
|
