2/22/20 UPDATE: Error 90 results from a sensor detecting lack of water flow. There are two well-known causes for flow problems: clogged filters and a broken.. Read our updated guide you guaranteed resolved your Intex PureSpa Hot Tub Error Code E90 and E96 In just a few minutes. And Other Error Codes like E94, E95, E98.
Disconnect the unit. The E90 code on the Intex spa indicates a dirty water flow sensor. Detach the control panel and remove all screws securing the casing. Within the white plastic section on the top discharge hose, locate a silver nut connected to a black wire. This is the sensor.. • Ensure the in/outlet connections on the spa tub and filter pump are not blocked. • If problem persists, contact Intex Service Center. The E90 code can also be from air trapped in the system or from moving the spa around knocking a few components out of alignment.