Hot Spring / Watkins spa error codes — full list and fixes
Found in: Hot Spring, Caldera, older Sundance, Tiger River, Solana, Limelight
Know your code? Jump straight to it with the decoder →
Always cut power at the breaker before opening the spa pack or touching wiring. Spa equipment runs at 120/240V and can be lethal. If you are unsure, hire a licensed spa technician.
All Hot Spring / Watkins codes
| Code | What it means | Fix |
|---|---|---|
| HOT | Water 10°F or more above set point. | View fix → |
| COOL | Water 20°F or more below set point. | View fix → |
| ICE | Freeze protection active — pumps cycle automatically. | View fix → |
| SN1 | Temperature sensor problem — open or short. | View fix → |
| FL1 | Flow switch malfunction — closed when it should be open. | View fix → |
| FL2 | Heater on without water flow detected. | View fix → |
| HL | High Limit triggered — heater shut down. | View fix → |
| OL | Overload — the circulation pump drew too much current. | View fix → |
| --- | Communication failure between topside and control box. | View fix → |
| LOC | Control panel locked — security feature. | Normal behaviour — no part needed |
| PR | Priming mode after fill or power restoration. | Normal behaviour — no part needed |
Cannot match your Hot Spring / Watkins code?
Send us a photo of your topside display or spa pack and our parts team will identify the fault and the exact replacement part.
Upload a Photo