Intex ECO5110 & 6110 Error 91: Alarm Code (Low Salt Level)

Saltwater system · taken from the manufacturer’s manual, pages cited

Alarm code91

Alarm Code (Low Salt Level) indicates insufficient salt in the pool. The manual's first action is: “Remove the electrolytic cell for inspection. Clean it if necessary. See "Maintenance".”

Model
Intex ECO5110 & 6110
Display shows
Alarm Code (Low Salt Level) (91)
Type
Alarm code
Source
Manual p. 19

What 91 means

Alarm Code (Low Salt Level) p. 25

Salt Needed when Low Salt Detected (CODE “91”) (Gals) (Liters) (Lbs) (Kgs) p. 12

Salt Needed for Startup (Lbs) Salt Needed for Startup (Kgs)Salt Needed when Low Salt Detected (Lbs) Salt Needed when Low Salt Detected (Kgs) p. 16

Common causes

  • 1. Dirt or scale on titanium plates. p. 25
  • 2. Low salt level / No salt. p. 25
  • 3. Electrolytic cell cord is loose. p. 25
  • 4. Possible electrolytic cell failure. p. 25

Safety warnings — read before you start

  • WARNINGWARNING. Do not permit children to use this product. Always supervise children and those with disabilities. p. 3
  • CAUTIONCAUTION. Risk of electric shock. Connect only to a grounding type receptacle... p. 3
  • DANGERDANGER. Do not bury the electrical cord. p. 3

What to do

  1. Remove the electrolytic cell for inspection. Clean it if necessary. See "Maintenance". p. 25
  2. Add salt. See "Salt & Pool Water Volumes". p. 25
  3. Ensure that the cell cord is plugged firmly into the cell housing receptacle. p. 25
  4. Contact Intex Service Center. Replace the cell if needed. p. 25

If 91 is still not resolved

  • Contact Intex Service Center. Replace the cell if needed. p. 25
    “Contact Intex Service Center. Replace the cell if needed.”
Open the manual at page 19 All ECO5110 & 6110 error codes Manual details & download

This page summarises what the manufacturer’s manual says about 91; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Intex. Found a mistake? Report an error.