Jacuzzi J-345 Manuel D’Utilisation

49

Your spa has a self-diagnostic control system. The system will 

automatically display the following if a problem is detected. 

When the actual spa water temperature reaches 2°F (1°C) 

above the set temperature, the spa goes into “summer logic.” 

The circulation pump will turn off automatically, if running, to 

avoid adding additional heat to the water, eventually creating 

an overheat condition. This setting is not user-programmable.

Note: Summer logic does not take effect until the spa water temperature 

reaches 95°F (35°C). This condition is more likely in excessively hot 

weather. Remember, the spa’s ability to cool is directly affected by 

the ambient temperature. An excessively hot ambient temperature 

may prevent the spa from cooling down because it’s fully insulated 

construction is designed to retain heat and minimize operating costs.
14.2  Panel Displays COL

Cool Condition - Temperature has dropped 20°F (11°C) 

below the current set temperature. Jets pump 1 and the 

heater have been activated to bring the temperature within 15°F (8°C) of 

the set temperature. No corrective action is required!

Note: This condition is common during first time fill ups or during refills 

since tap water is often very cold. “COL” will only appear when the spa is 

in Economy mode.
14.3  Panel Displays ICE

Freeze Protection - A potential freeze condition has been 

detected. No action is required. Jets Pump 1 and heater will 

activate to circulate and warm water through the plumbing until spa is out 

of danger. See “Winterizing” (page 42).
14.4  Panel Displays SN1

Open sensor (heater is disabled) or shorted sensor (spa 

is deactivated). The high-limit temperature sensor is not 

functioning. Contact your authorized Jacuzzi dealer or qualified service 

technician.
14.5  Panel Displays SN2

Open or shorted sensor (heater disabled). The temperature 

sensor is not functioning. Contact your authorized Jacuzzi 

dealer or qualified service technician.
14.6  Panel Displays BLB

UV bulb needs to be replaced. The message will flash 

between “blb” and the water temperature. The countdown 

timer for the UV bulb needs to be reset (page 33). A new UV bulb can 

be purchased from a local Jacuzzi dealer.