How to fix mspa Blue Sea B110 Hot Tub control box not heating properly?
- AArthur MillsAug 3, 2025
If your mspa Hot Tub control box isn't heating properly, make sure the temperature is set high enough (between 20-40?). Clean or replace the filter cartridge, and ensure the water level is correct. If the problem persists, the heating element may have failed, and you should call for service.