Intex 28476 - Error Code E94 (Low Water Temperature)

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Error Code E94
This code indicates very low water temperature which could be due to frigid water or a problem with the
20-40 C water temperature sensors. Please follow the logic diagram and instructions as below:
Begin the test by installing the spa control base and panel to a tub filled with water to the recommended
level. Make sure that the water inside the tub is not colder than 4℃. Turn on the spa control base.
No
Display E94
Yes
1. Add warn water if water temp. <4℃
2. Replace 20-40 temperature sensor
3. Or replace a PCB
Go Back to Next Step
END
Run heat 5 min.,
E94?