Lock Out Mode; Summer Logic; Understanding Circuit Board Pin Assignments; Circuit Board Jumpers - Jacuzzi Premium J-325 Troubleshooting Manual

5.5 Lock Out Mode

The control panel temperature display fl ashes when the Lock Out Mode is active. Lock
Out Mode disables all hot tub functions to permit fi lter cleaning. If the hot tub is heating
when lockout mode is selected, the heater will immediately turn off and the circulation
pump will cycle water for 30 seconds to cool the heater element, then turn off. See
section 4.2 (page 20).

5.6 Summer Logic

When the water temperature in the hot tub rises 2ºF (1ºC) above the set temperature
setpoint. the hot tub goes into "Summer Logic." When this happens, the circulation
pump automatically turns off to prevent additional heat build up from the pump that
would eventually create an overheat condition. The circulation pump, main pump and
aftermarket ozone (when installed) will remain off until the water temperature cools to
the set temperature, then reactivate as programmed. This setting is not user-pro-
grammable.
Note: Summer Logic does not take effect until the hot tub's water reaches 95ºF (35ºC) or higher.

6.0 Understanding Circuit Board Pin Assignments

6.1 Circuit Board Jumpers

All ProTech LED circuit boards can be confi gured for either 15/30A or 50A 240 VAC operation (J-340
can be confi gured for 60A with 3.54 Revision Chip). Refer to the jumper pin table and circuit board dia-
gram below for specifi c details:
2002+ ProTech LED Circuit Boards
Pins 1-2: Jumper OFF
Pins 1-2: Jumper ON
Pins 3-4: Jumper OFF
Pins 3-4: Jumper ON
Pins 5-6: Jumper OFF
Pins 5-6: Jumper OFF
Pins 5-6: Jumper ON
Pins 7-8: Jumper OFF
Pins 7-8: Jumper ON
- Enables 50A Logic; Allows heater to run with 1 pump in high speed.
- Enables 15/30A Logic; Forces heater off when any jet pump is in high
speed. Overrides 50 or 60A Logic.
- Enables 1 Pump Logic.
- Enables 2 Pump Logic; J-340 only.
- Revision 3.53 Circuit Boards; Not used at this time.
- Revision 3.54+ Circuit Boards; Enables 50A Logic.
- Revision 3.54+ Circuit Boards; Enables 60A Logic, J-345 only.
- Enables Fahrenheit (ºF) temperature display.
- Enables Celsius (ºC) temperature display.
N
Rev. 3.53
Spa Light
L
N
Ozone
L
N
Circ Pump
L
N
L
L
N
L
Red Black
Heater In
L
N
N
JP1
8
7
6 5
4 3
2 1
Heater Out
L
N L
23
JP1
8
7
6
5
3
4
2
1
Display is
Flashing
Display is
Flashing