SN2
Temp Sensor Failure.
FIX: Replace sensor (might be a board failure but more likely the
sensor). The most common temp sensor on this model is a gray stud that
is located on the spa shell. To replace, drain the water below this sensor
stud. Open the control box cover and identify the temp sensor where it
connects to the board. Unplug and fish wires out of the control box. You
will either see the temp sensor on the spa’s shell or by the filter. If the
wire goes into a ½” flex hose, do the following:
Tie string to old sensor wire. Unbolt temp sensor stud. Pull the sensor
while feeding the string through the hose. When the hold old wire is out
and you have the string now in the hose, move the string to the new
sensor and reverse pulling the new sensor wire through the hose.
Tighten the new temp sensor in place, only to snug. If you over tighten
you could break the new holding the sensor to the shell. Plug the temp
sensor wires back into the board.
FL1
Pressure switch not closing when heat pump is on.
FIX: First try removing the filters and power up. If nothing, do you SEE
water moving? If no, likely the circulation or #1 pump. You can confirm
that proper current is being applied to the pump motor. If yes, replace
pump/motor. If no, replace board.
If you Do see water moving, then error is likely the pressure or flow
switch. Replace. See above how to replace.
FL2
Pressure switch is not opening.
FIX: Replace pressure or flow switch. See how above.
COL
Cool condition.
FIX: None. Will reset when water is heated. Normal to happen when
water is changed and water is cold. If water keeps getting colder, see
below.
ICE
Water is below 55 degrees. Jets will come on until water heats.
FIX: Spa is getting worried the water is getting cold. Alright, if everything
seems fine, heater light is on, on other error code, but the water IS
getting colder, then one of two things is likely.
Most common is the heater has failed. The spa is applying current to the
heater but the heater is not doing it its job. Replace heater (see heater
section).
Second possibility is the board is saying it is powering the heater but is
not. When this happens, you must replace the board.
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