LA Spas
No Heat Condition
Spa does not heat, temperature stays well below set point, but pumps and jets work normally.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Failed heater element, Tripped high limit, Faulty heater relay on control board, Broken temperature or high limit sensor
How to Fix / Troubleshooting
Safety: Turn off power and verify with a meter before touching heater wiring.
- Check for error codes: Look at the display for FLO, OH, Sn1, Sn2, or other codes and resolve those first.
- Verify heater power (advanced): With a multimeter and power on, a technician can check for proper voltage at the heater terminals when the spa calls for heat. No voltage indicates a control/relay issue; correct voltage but no heating indicates a bad element.
- Inspect heater connections: With power off, tighten heater terminal nuts and inspect for burned wires.
Heater element or control board replacement involves high‑voltage work and is best left to a professional.
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Repair Difficulty
Professional Required
5/5
Required Part
Heater Assembly
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