If the E90 code appears after running for a while: If there is debris inside, turn the control unit off, unscrew the spa inlet/outlet grid with a Phillip screwdriver. Clean and replace it back. Make sure the spa water is clean and sanitized.
How do I fix my E90 in my Intex hot tub?
If the E90 code appears after running for a while: Check and ensure there is no debris inside the spa tub inlet and outlet grids. If there is debris inside, turn the control unit off, unscrew the spa inlet/outlet grid with a Phillip screwdriver. Clean and replace it back. Make sure the spa water is clean and sanitized.
What is E90 error?
As for the E90 fault. It indicates no water flow. It indicates no water flow. They shut down for two reasons. Without flow the heater could over heat and cause a fire.
How do I reset my hot tub?
https://www.youtube.com/watch?v=OwhFwZYtVf0
How do I reset my hot tub pump?
https://www.youtube.com/watch?v=7o2gbvl8Mnw
Why is my Intex hot tub flashing E90?
If alarm code E90 is displayed on the control panel, it means no water is flowing through the system. Please check the following: The filter cartridge is clean and properly installed.
Where is the reset button on Intex hot tub?
https://www.youtube.com/watch?v=QyGtGHtOpSA
How do I fix my Intex spa?
https://www.youtube.com/watch?v=yaEwojvhxXs
Why won't my Intex hot tub heat up?
If your spa heater won't heat, remove and clean the filter(s) to rule out a pressure or flow rate problem in your hot tub heater. Low water level, a clogged pump impeller, closed valves, clogged pipes, or blocked spa drain covers can also cause flow issues.