Hi Limit Spa Xi | CZXHLC3105
Safeguarding Your Hot Tub’s Heating: The Hi Limit Spa Xi
Product Overview
The Hi Limit Spa Xi is a critical safety component designed to protect your hot tub’s heating system. This surface mount hi-limit switch automatically cuts power to the heater if the water temperature exceeds a safe threshold, preventing potential damage or hazardous situations.
Detailed Specifications
- Model: CZXHLC3105
- Manufacturer: Thermodisc
- Temperature Rating: 150°F
- Amperage: 50A
- Voltage: 230V
- Mounting: Surface mount
- Warranty: Manufacturer’s warranty
Exploded parts diagram: This part is shown as item #24 on the Hayward C-Spa XI electric heaters exploded parts diagram.
🔧 Hayward C-Spa XI electric heaters – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | 46-150-1060 |
| – | _CFZ-15-406 |
| 24 | Hi Limit Spa Xi ◀ this part |
| 23 | _CZXCON3645 |
| 22 | Pressure Switch, Hayward Above Ground |
| 21 | Thermostat Label, Hayward C-Spa XI |
| 20 | 46-150-W001K20 |
| 19 | Hi-Limit Grommet, Hayward C-Spa XI |
| 18 | Thermostat Knob, Hayward C-Spa XI/CPS/PSG/SGII, Black |
| 17 | _CZXTST3006 |
| 15 | Thermostat Dial Lock, Hayward C-Spa XI |
| 14 | _CZXSCR3003 |
| 13 | Bushing, Hayward C-Spa XI |
| 8 | Gasket, Hayward C-Spa XI, Inlet/Outlet |
| 7 | Element Hole Plug, Hayward C-Spa XI, with Gasket |
| 6 | Gasket, Hayward Element |
| 5 | Screwplug Element,1"thd,1.5/5.5kW,C-Spa XL/Coates,115v/230v |
| 4 | 47-150-1008 |
Reliable Temperature Monitoring
The Hi Limit Spa Xi utilizes a sensitive thermal sensor to constantly monitor the water temperature in your hot tub. If the temperature reaches the 150°F threshold, the switch will immediately interrupt power to the heater, ensuring your spa remains within a safe operating range.
Durable and Long-Lasting
Constructed with high-quality materials, the Hi Limit Spa Xi is built to withstand the rigors of constant use in a hot tub environment. You can trust this component to provide reliable temperature monitoring and protection for your spa, season after season.
Seamless Integration
Designed as a direct replacement for a variety of hot tub models, the Hi Limit Spa Xi can be easily installed in your existing system. This allows you to upgrade or repair your safety systems with minimal disruption to your spa’s operation.
Specifications Table
| Specification | Value |
|---|---|
| Model | CZXHLC3105 |
| Manufacturer | Thermodisc |
| Temperature Rating | 150°F |
| Amperage | 50A |
| Voltage | 230V |
| Mounting | Surface mount |
| Warranty | Manufacturer’s warranty |
Safeguard your hot tub’s heating system with the reliable and efficient Hi Limit Spa Xi. Ensure the safety and longevity of your backyard oasis with this essential replacement component.
🔧 Exploded diagram and parts
This part belongs to the Hayward C-Spa XI electric heaters assembly. Everything listed below is something we stock for it, and the numbers match the diagram.
| No. | Part | Our part number | Availability | |
|---|---|---|---|---|
| 5 | ![]() |
Screwplug Element,1"thd,1.5/5.5kW,C-Spa XL/Coates,115v/230v | 31521800012 | 239 in stock |















