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Here Is a
General Tour of a Typical Control Box |
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A |
Incoming
power terminal block. On this control box it requires 4
wire service. First is green for ground. Second and
third are lines. Fourth is white or neutral. If the
power is correct, using a voltmeter green to neutral to
be close to zero. Red to white is 110-120vac. Black to
white is 110-120vac. Red to black is 220-240vac. These
voltages are required for the spa to operate correctly.
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B |
These sockets are where the
components plug in. The wiring for these couplings come
directly from terminal "K". |
|
C |
Main 30amp
fuse. If this fuse blows its almost always a pump motor
failure. |
|
D |
Transformer; The board
operates on 12-15vac. So you need a transformer to
reduce the incoming power down to this lower voltage.
The transformer gets its power from the "I" socket and
also feeds the board through the same socket. |
|
E |
This is the
connection that links the pressure switch to the board. |
|
F |
This is a paired connection
for sensors; one pair goes to the heat to sense the
temperature of the heater and protect the spa from it
overheating. Its referred to at either the OH sensor or
the High Limit sensor. The other pair of this connection
is the temperature sensor. The cord runs to the filter
compartment and tells the board what actual water
temperature is. |
|
G |
This is the
boards chip. This manufacturer puts the board and
control box number on its chip. Example: F106xxxxxx. The
"F106" is the board AND control box number. the "xxxx"
is used to identify its generation and is not user
necessary. |
|
H |
This board has 2 smaller
fuses that can fail if a electrical surge event happens. |
|
I |
This is
where the transformer plugs into the board |
|
J |
This terminal is where major
power current connects to the board. |
|
K |
This
terminal feeds the "B" bank and therefore the
components. Usually the actual component is printed on
the board here. |
|
L |
Its not clear but on this
control system, the air blower fuse is here. |
|
M |
You can't
see it but the control box is wired to the heater posts
(2) at this locale. |
