U2 0 = Low pump on demand. The low pump will come on to
sample temperature, heat or filter the spa as needed.
1 = The low pump runs all the time.
U3 0 = Auto Filtration is one 3 hour long period. This length of this
period is fixed and cannot be changed. It is the minimum
recommended filtration time for a spa.
1 = Auto Filtration is two periods each 3 hours long. The
second period starts 12 hours after the first period is
executed.
U4 0 = User timer starts with the first key pressed and shuts the
spa off at the end of count down.
1 = The user timer is restarted every time a key is pressed.
U5 0 = Display TOD, time of day the first 10 seconds of every
minute, if the time of day has been set.
1 = Do not display TOD. If TOD was not set by the user then it
most probably is incorrect and the controller will not display
it even if U5 is a 0.
U6 0 = If line frequency is 60 hz, then display temperature in
Fahrenheit. If 50 hz then display Centigrade.
1 = If line frequency is 60 hz, then display Centigrade. If 50 hz
then display Fahrenheit.
Note : Line frequency is automatically measured by the
microprocessor every time on power up.and the displayed
temperature will follow the frequency : Fahrenheit for 60Hz
(US), Centigrade for 50Hz (Europe). When option U6 is set
ON, the units of displayed temperature will be opposite to the
frequency.
U7 RESERVED do not change leave it at 0
U8 RESERVED do not change leave it at 0
The default setting for all U options is 0.
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