J-300 Series (2014+)
This page covers Jacuzzi J-315, J-325, J-335, J-345, J-355, J-365, J-375 and J-385 hot tubs built in 2014 or later with the LED control panel. Find the code on your display or the problem you're having to see what it means, what you can check yourself, and which part fixes it.
Reviewed by the Spa Store parts team, serving hot tub owners since 1994.
Is mine a 2014+ model? When you turn the power on, the control panel briefly shows a software version number, then "888," then the water temperature. Two jets buttons means a 2-pump model (J-335 to J-385). One jets button means a 1-pump model (J-315 or J-325).
Find your error code
Red codes need attention. Green codes are normal status messages or reminders.
| Display | What it means | What to do |
|---|---|---|
| FL1 | No water flow while the circulation pump is running. The heater shuts off. | Check the filter, water level and skimmer. FL1 & FL2 guide |
| FL2 | The flow switch reads flow while the pump is off. The heater shuts off. | Usually a failed flow switch. FL1 & FL2 guide |
| SN1 | The high-limit sensor inside the heater has failed or come loose. The heater shuts off. | Have a technician test the sensor. |
| SN2 | The water temperature sensor has failed or come loose. The heater shuts off. | Have a technician test the sensor. |
| OH | The water reached 116°F. The spa runs a pump to cool itself down. | Stay out of the water. Check it with a thermometer, and call a technician if it happens again. |
| - - - | Safety shutdown. The spa detected 118°F or a serious fault and turned everything off. | Stay out of the water. Call a technician. |
| COL | The water is 20°F or more below your setting, so the spa is heating. | Nothing. This is normal after a refill. |
| ICE | The water dropped below 55°F. Freeze protection runs the pumps and heater until it reaches 65°F. | Nothing. The spa is protecting itself. |
| CF | Filter cleaning reminder. It alternates with the water temperature. | Clean or replace the filters, then reset the timer. |
| blb | The CLEARRAY UV bulb is due for replacement. The CLEARRAY light blinks. | Replace the bulb (once a year) and reset the timer. |
| LOC | A lock mode is on, so some buttons or menus are disabled. | Unlock it in the Menu settings. |
Common problems
- Not heating, or not heating enough
- Heats sometimes, then stops
- Nothing works or the panel is blank
- Circulation pump not running
- Circulation pump turns on and off
- No jets
- Weak or surging jets
- Jets pump shuts off by itself
- Jets pump hums but won't start
- Breaker or GFCI keeps tripping
- Lights won't turn on
- CLEARRAY not working
- Ozonator not working
- Filter cycle doesn't start
Parts for 2014+ J-300 hot tubs
| Part | Fits | Spa Store Item # |
|---|---|---|
| Control panel, 2-pump | J-335 to J-385 | 5170066 |
| Control panel, 1-pump | J-315, J-325 | 3170066 |
| Circuit board, 2-pump | J-335 to J-385 | 3920066 |
| Circuit board, 1-pump | J-315, J-325 | 5920066 |
| Flow switch | J-335 to J-385 | 0400652 |
| Flow switch | J-315, J-325 | 2580656 |
| Software chip, Rev 3.82 | 2014 models built before 7/15/14 | 9820666 |
| Chip puller tool | For the chip above | 0910006 |
| Main fuse, 30A | 2-pump models | 5010666 |
| Main fuse, 20A | 1-pump models | 6010666 |
| Transformer fuse | All 2014+ J-300 | 0210676 |
| Temperature and high-limit sensors | All 2014+ J-300 | Shop sensors |
| CLEARRAY UV bulb and ballast | All 2014+ J-300 | Shop CLEARRAY |
| Filter cartridges | All 2014+ J-300 | Shop filters |
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Safety first. Hot tubs run on high-voltage power. Always turn off the breaker before opening the equipment area, and leave electrical testing to a qualified spa technician. If your display shows OH or three dashes, stay out of the water until the problem is fixed.