Jacuzzi J-315 Manual page 25

FL1 And FL2 Water Flow Problem
• FL1: The flow switch is not closed when the circulation pump is running. The heater is de-
activated. Proper water flow is inhibited or the flow switch may be obstructed, misaligned or
defective. Refer to troubleshooting steps 1-4 below:
1. Remove the filter and allow the air to bleed out of the cartridge. Check the filter for trapped air.
2. Check for the proper water level.
3. Check for a clogged filter cartridge.
4. If the problem persists, refer to section 7.4 (page 26) for flow switch testing instructions.
• FL2: The flow switch is closed when the circulation pump is not running. The heater is deac-
tivated and the pump may or may not turn on. The flow switch is usually defective. Refer to
section 7.4 (page 26) for flow switch testing instructions.
COL Cool Condition
If the water temperature drops 20ºF (11ºC) below the set temperature, the heater will activate to
raise the water temperature to within 15ºF (8ºC) of the set temperature, the turn off. No corrective
action is necessary.
ICE Freeze Condition
A potential water freeze condition of 55ºF (13ºC) has been detected. No action is required. The
heater will activate and raise the water temperature to approximately 65ºF (18ºC), then turn off,
cancelling the "ICE" error message.
OH High Temperature Condition
The water temperature is above acceptable limits. DO NOT ENTER THE HOT TUB WATER.
The water temperature has reached 112ºF (44ºC) and the low speed pump has activated to cir-
culate water through the hot tub to cool it down. Refer to test steps 1-4 below:
1. Verify the actual water temperature with an accurate thermometer. If the actual water temperature is less than
112ºF (44ºC), proceed to steps 2-4.
2. Turn off the main breaker to the hot tub. Refer to appendix page 55 for expected hi-limit/temperature sensor
resistance/water temperature values.
3. Remove the hi-limit sensor connector from the circuit board points 10. Refer to pages 50-51 for your circuit
board configuration. Set your ohmmeter to the 100-200k range, then measure resistance across the sensor
wires (see page 57). If the resistance tests OK (± 200 ohms), check the wiring harness connections. If the
wiring harness connections test OK, replace the circuit board. If the sensor resistance is incorrect, replace the
hi-limit sensor.
4. Measure resistance across the temperature sensor wires (see page 55). If the resistance tests OK (± 200 ohms),
replace the circuit board. If the temperature sensor resistance is incorrect, replace the temperature sensor.
"- - -" Watchdog
The water temperature has reached 118ºF (48ºC). DO NOT ENTER THE HOT TUB WATER.
The entire system is disabled. Refer to test steps 1-4 below:
1. Check the hi-limit and temperature sensor resistance values. Both sensors should measure
close in resistance to each other (e.g. one may be defective and way out of range). Refer to appendix page 55
for expected hi-limit/temperature sensor resistance/water temperature values (± 200 ohms). If either sensor
is faulty, replace it and recheck the system. If the problem persists, proceed to step 2.
2. Plug in a new control panel. If the problem is corrected, replace the control panel. If the problem persists,
proceed to step 3.
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