Jacuzzi J-300 Series, Installation, Use & Maintenance Manual

44

Error Conditions/Error Messages

„

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

automatically display the following if a problem is detected.

„

Summer Logic

When the actual spa water temperature reaches 1°C (2°F) above 
the set temperature, the spa goes into “summer logic.” The circu-
lation pump will turn off automatically, if running, to avoid add-
ing additional heat to the water, eventually creating an overheat 
condition. This setting is not user-programmable.
The filter/circulation pump and CLEARRAY® will remain off until 
the water temperature cools to the set temperature 

(except be-

tween 8am-11am and between 8pm-11pm,  when the filter/circula-
tion pump runs for it’s mandatory cycle)

. To help prevent a “Sum-

mer Logic” condition, it may be necessary to reduce filtration 
cycles run times in warm weather.

Note:

Summer logic does not take effect until the spa water tem-

perature reaches 35°C (95°F). This condition is more likely in exces-
sively 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.

„

Panel Displays COOL

Cool Condition - Temperature has dropped 11°C (20°F) below the 
current set temperature. The circulation pump and the heater 
have been activated to bring the temperature within 8°C (15°F) 
of the set temperature. No corrective action is required!

Note: 

This condition is common during first time fill ups or dur-

ing refills since tap water is often very cold.

„

Panel Displays ICE

Freeze Protection - A potential freeze condition has been de-
tected. No action is required. Water temperature is below ~ 13°C 
(55°F). Jets Pump 1, Jets Pump 2 and the circulation pump will 
activate for 10 minutes, then turn off. Then the circulation pump 
and the heater will activate for 10 minutes. The two cycles shall 
repeat until the water temperature reaches  ~ 18,5°C (65°F). See 
“Winterizing”.

„

Panel Displays SN--1

Open sensor (heater is disabled) or shorted sensor (spa is de-
activated). The high-limit temperature sensor is not function-
ing. Contact your authorized Jacuzzi dealer or qualified service 
technician. The display will alternate between 

“SN--1”

, scrolling 

message 

“HI-LIMIT SENSOR ERROR”

 and the current water tem-

perature.

„

Panel Displays SN--2

Open or shorted sensor (heater disabled). The temperature sen-

sor is not functioning. Contact your authorized Jacuzzi dealer or 
qualified service technician. The display will alternate between 

“SN--2” 

and the current water temperature. The display will al-

ternate between 

“SN--2”,

 scrolling message 

“WATER SENSOR 

ERROR”

 and the current water temperature.

„

Panel Displays Change CLEARRAY Bulb

The CLEAR

RAY

 bulb timer has expired. UV bulb needs to be re-

placed. The display will alternate between the current temper-
ature reading and the scrolling message

 “CHANGE CLEARRAY 

BULB”

 as long as the error exists. The countdown timer for the 

UV bulb needs to be reset. A new UV bulb can be purchased from 
a local Jacuzzi dealer.

„

Panel Displays Change Filter

The filter change timer has expired. The spa filters need to be 
cleaned or replaced. The display will alternate between the cur-
rent temperature reading and the scrolling message 

“CHANGE 

FILTER”

 as long as the error exists. The countdown timer for the 

Change Filter feature needs to be reset. New filters can be pur-
chased from a local Jacuzzi dealer.

„

Panel Displays Change Water

The water refresh timer has expired. The spa needs to be drained 
and refilled. The display will alternate between the current tem-
perature reading and the scrolling message

 “CHANGE WATER”

as long as the error exists. The countdown timer for the Change 
Filter feature needs to be reset. New filters can be purchased 
from a local Jacuzzi dealer.

„

Panel Displays FL--1

An 

“FL--1” 

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. The spa heater will 
deactivate and jets pump #1 may also deactivate. Contact your 
authorized Jacuzzi dealer or qualified service technician. The 
display will alternate between “FL--1,” scrolling message “FLOW 
ERROR OPEN” and the current water temperature.

„

Panel Displays FL--2

An

 “FL--2” 

display means the flow switch is malfunctioning 

closed. The spa heater will deactivate and jets pump #1 may also 
deactivate. Contact your authorized Jacuzzi dealer or qualified 
service technician. The display will alternate between

 “FL--2,”

scrolling message 

“FLOW ERROR CLOSED” 

and the current wa-

ter temperature.

„

The panel displays FL--3

If

 “FL--3” 

is shown on the display, this means that the flow switch 

is not stable. The hot tub heater and jet pump 1 are deactivated. 
Contact your authorised retailer or a qualified support service 
technician. The display shows 

“FL--3”

, the message 

“FLOW ER-

ROR TOGGLE”

 (flow switch variable functioning error) and the 

current water temperature alternately.