Troubleshooting Using The Control Panel; Control Panel Displays; Control Panel Default Display; Control Panel Status And Error Messages - Jacuzzi LED Series Troubleshooting Manual

7.0 Troubleshooting Using The Control Panel

7.1 Control Panel Displays

Complete operating instructions for the control panel can be found in the owner's manual. The hot
tubs self-diagnostic control system constantly monitors the hot tub for proper operation. When any-
thing goes wrong, the control panel displays a message for the user which may result in a service
call.

7.2 Control Panel Default Display

The control panel displays the following information during initial start-up:
1. Control panel displays current software microchip revision, then
2. Control panel displays "888" and all indicator LED's are lit, permitting visual
inspection of all display segments and indicator lights for proper operation.
3. After the initial start-up sequence ends actual water temperature is displayed. If the
water temperature at this time is less than the factory default temperature setting of
100°F (38°C):
Approximately two minutes after initial start-up, the first filtration cycle begins to operate. The filtra-
tion cycle can be modified any time after the start-up sequence ends. You will be able to select a
pre-programmed filter cycle and reset your temperature setpoint at this time. Press either COOLER
or WARMER button once at this time to display the current temperature setpoint. You can change
the setpoint by pressing either COOLER or WARMER button within 3 seconds. Each button press
increases or decreases the temperature setpoint by one degree. Three seconds after the setpoint is
set, the display defaults back to actual water temperature.

7.3 Control Panel Status and Error Messages

CF Clean Filter (All Models)
The clean filter timer has expired. The spa filters need to be cleaned or replaced. The
message will flash between "CF" and the water temperature. The countdown timer for
the Change Filter feature needs to be reset. New filters can be purchased from a local
Jacuzzi dealer.
SN1 Nonfunctional Hi-limit Sensor (All Models)
Open or shorted hi-limit sensor. Heater is deactivated. Refer to test steps 1-2 below:
1. Turn off main breaker to hot tub. Refer to appendix, page 49, for expected hi-limit
sensor resistance/water temperature values.
2. Remove hi-limit sensor connector from circuit board test point 21. Refer to pages 43-46 for
your circuit board configuration. Set ohmmeter to 100 k
across hi-limit sensor wires (refer to page 49). If sensor resistance tests OK (± 200
sensor connections. If connections are OK, replace circuit board. If sensor resistance is incorrect,
replace hi-limit sensor.
SN2 Nonfunctional Temperature Sensor (All Models)
Open or shorted temperature sensor. Heater is deactivated. Refer to test steps 1-2
below:
1. Turn off main breaker to hot tub. Refer to appendix, page 49, for expected hi-limit sensor
resistance/water temperature values.
2. Remove temperature sensor connector from circuit board test point 21. Refer to pages 43-46
for your circuit board configuration. Set ohmmeter to 100 k
resistance across temperature sensor wires (refer to page 49). If sensor resistance tests OK
(± 200
, check sensor connections. If connections are OK, replace circuit board. If sensor
Ω)
resistance is incorrect, replace temperature sensor.
14
- 200 k range, then measure resistance
Ω Ω
- 200 k range, then measure
Ω Ω
, check
Ω)