calls daily where the customer says
"the hot tub doesn't work!". After a
discussion its the "XXXX" doesn't
work. Could mean the heater doesn't
work or one jet pump doesn't work or
the hot tub is completely dead.
Typically electronic models operate
the same way. When you first apply
power to the hot tub the board does a
self test. This self test can revel
a problem. So lets walk through a
typical hot tub start-up:
Turning on power. On some models,
there are TWO sources of power. We
do not address that design because
its not standard. So you turn on main power.
This activates the system. Boards do
a self test so there may be a delay
in the hot tubs starting. You might see
the heater light come or or some
digital topsides countdown and newer
ones read out the model's version
number. Also... some hot tubs the
circulation or low speed pump comes
if nothing comes on? By this we mean
nothing. Some think if its heating
but the jet doesn't come on, its
"nothing". Nothing is nothing. OK,
first step is to see if the fault is
incoming power or the hot tub. Often
people think the breaker is reset
but isn't. So turn the breaker to
FULL off and then on. If you hear a
"click" when turning on and the
handle sets in the middle, that means
the gfci is popping. Its the same
result when you press the TEST
button. Its a short!
definitive way to check is with a
Here. Once you confirm you
have proper power to the hot tub, its
get simpler. Thankfully hot tubs built
after 1994 most commonly have
digital topside that give you codes.
If so, go to
CODES. If you topside is blank
but you know you have proper power,
either the board is damaged or a
fuse has blown. Turn main hot tub power
off. Turn your meter to OHMS and
test each fuse in place. Likely one
or two fuses are attached to the
board to protect the board.
checked all fuses and all is OK.
Next is the transformer. On MOST
models the transformer is not
physically part of the board. If it
is, you can't do this test. See
transformer passes, that only leaves
the board. Replace the board.
individual components fail:
when components like jet pump or
heater or air blower fail, they
typically are obvious. BUT... not
always. Again, proof is with a
voltmeter. Example: "Everything
works but my #2 jet pump.". So you
think, need a new #2 jet pump. You
buy one (from us, of course) and
install. So proud of yourself. Turn
on hot tub... STILL no #2 jet pump.
the voltmeter. You MUST check the
voltage to the jet pump or whatever
has failed. WHY? The failure could
be a number of issues. Let's see:
many models, the 20, 25, or 30amp fuse
is the link to the pumps. The board
WILL actually come on but the pump
will not. So the above test with the
fuses confirms its NOT a fuse issue.
systems the board operates on 115v
BUT the pump operates on 230v. SO...
the hot tub's topside comes on, you press
the jet button, hear a CLICK.. must
be the pump motor. Replace. No help.
Turns out ONE leg of the 230v is out
so the power to the board is AOK but
not to the motor. Fix incoming power
and you solve problem.... and now
have an extra jet pump.
topside button has failed. So you
push the button, it really doesn't
do anything, so the component does
not come on.
board has failed. Its not turning on
Lastly... it IS the component and
the hot tub tech's simple method:
Proper incoming power to hot tub
Proper power to component. Yes,
replace component. No, determine
topside or board.