E15 error code appears; spa may not allow heating or bubble operation in very low temperatures.
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Do not attempt to run the spa if water or hoses are frozen. Ice expansion can crack components.
- Check ambient temperature: Confirm that the outdoor temperature is within the operating range specified by SaluSpa (typically above 4°C / 40°F).
- Inspect for ice: Gently squeeze hoses and the spa wall near the inlet/outlet to feel for ice. If frozen, do not power the spa.
- Thaw safely: Move the pump/heater unit and hoses to a warmer area or use ambient room heat to gradually thaw. Do not use open flames or direct high heat.
- Refill and test: Once fully thawed and inspected for cracks or leaks, refill the spa with water above 10°C (50°F) and restart.
- Persistent E15 in mild weather: If the error appears even in normal temperatures, the freeze sensor or logic may be faulty and the pump/heater unit may require replacement.
Warning: Operating the spa in freezing conditions without proper insulation and monitoring can cause severe damage to the liner and pump/heater assembly.
Repair Difficulty
Required Part
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