Jacuzzi J-345 User Manual

50

A flashing “FL1” display means the flow switch is  

malfunctioning open, the filter cartridge is excessively dirty or 

an “air lock” condition has occurred at the circulation pump 

intake. A flashing “FL2” display means the flow switch is 

malfunctioning closed. In either case, the spa heater will deactivate and 

jets pump #1 may also deactivate. To correct condition perform the 

following:

1.  Verify water level is above all jets but below lowest pillow. Add water 

if necessary.

2.  Check for clogged or dirty filter cartridge (Sec. 12.1, page 36).

3.  Purge “air lock” from circulation pump intake by removing filter 

cartridge. Hold your garden hose over the filter cartridge wall fitting 

while using a rag as a seal around hose end. Ask a helper to turn 

on water for 30 seconds, then turn off. Reinstall filter cartridge and 

4.  If the circulation pump is not running, turn power off at the main 

breaker, then turn power back on. This will reset the circulation pump 

priming cycle. Once the pump is primed, the error should clear.

5.  If problem persists, contact your authorized Jacuzzi dealer.

 

!

Water temperature is above acceptable limits. 

ENTER SPA! Water temperature has reached 112°F (44°C) 

and the jets pump 1 and circulation pump has activated to 

circulate water through heater. Contact your authorized Jacuzzi dealer or 

qualified service technician.

•  Remove the spa's cover and allow your spa to cool down.

•  Program the heater settings for Economy Mode (page 33). Raise 

water temperature setting to cancel Summer Logic condition (page 

•  If the condition persists, contact your authorized Jacuzzi dealer.

 

!

Water temperature is above acceptable limits. 

ENTER SPA! The safety “Watchdog” software has been 

triggered and the spa is deactivated. A problem has been 

detected which could cause damage to the spa or its components. 

Contact your authorized Jacuzzi dealer or qualified service technician.