Jacuzzi J-145 Owner's Manual page 31

With two pump models, an automatic one-minute "blow-out" function also
activates pump 2 for a period of one minute to flush all lines. Then, after
one minute, pump 2 turns off and pump 1 continues to operate for the
duration of the cycle.
Note: This function only occurs during the first filtration/heating cycle
each day.
Standard Filtration/Heating Modes (F1-F3)
(Heater automatically turns on during any heat call while in
any Standard mode).
F1 4 hours of filtration/heating per day (one 2-hour cycle
every 12 hours).
F2 6 hours of filtration/heating per day (one 2-hour cycle
every 8 hours).
F3 8 hours of filtration/heating per day (one 2-hour cycle
every 6 hours).
Economy Filtration/Heating Modes (F4-F6)
(Heater can only turn on during an active filter cycle while in
any Economy mode).
F4 4 hours of filtration/heating per day (one 2-hour cycle
every 12 hours).
F5 6 hours of filtration/heating per day (one 2-hour cycle
every 8 hours).
F6 8 hours of filtration/heating per day (one 2-hour cycle
every 6 hours).
Lock Modes (L1-L3)
(When in a lock mode the display will flash between the
temperature and the Lock mode number)
L1 Lock Out (disables all spa functions to permit filter
cleaning).
Note: The spa should not be left in this lock mode for an
extended period of time. Especially in colder climates or when
freezing conditions exist.
L2 Lock Mode (disables the jets and light buttons to prevent
unauthorized use of spa). Filtration/heating cycle will continue to
operate as programmed in this mode. The temperature display
flashes when this function is enabled. Example: the "F3" filtration/
heating cycle was enabled prior to choosing lock mode. The spa
continues to perform the "F3" cycle until lock mode is canceled,
allowing another cycle to be selected.
L3 Lock Mode (disables the temperature up and down buttons to
prevent unauthorized temperature adjustments). Filtration/heating
cycle will continue to operate as programmed in this mode. The
jets and lights buttons will still continue to operate as normal. The
temperature display flashes when this function is enabled.
Note: To exit a Lock Mode you will need to re-enter the filtration/heating
modes and select a cycle from F1-F6.
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