Marquis Vector21 Series Owner's Manual page 54

No Sanitizer Reading
P: Sanitizer level is too low.
S: Shock and/or adjust sanitizing cartridge until the sanitizer registers in
the recommended range.
P: Test strip remains "white" even after sanitizer has been added.
S: Sanitizer level could be extremely high. It can bleach the reagents on
the test strip and give a false reading. Remove spa cover and activate
jets and air control. Allow jets to run for 30 minutes. Test water to see
if desired level has been reached. Adjust sanitizing cartridge to reduce
sanitizer level.
High Sanitizer Reading
P: Too much chlorine or bromine added or dispensed into the spa.
S: Remove spa cover and activate jets and air control. Allow jets to run
for 30 minutes. Test water to see if desired level has been reached.
Adjust sanitizing cartridge to reduce sanitizer level.
Eye or Skin Irritation
P: Contaminants or excessive amount of chloramines/bromamines in
water.
S: Treat water with Spa Shock. Adjust sanitizer level.
P: pH is low.
S: Adjust as needed.
Corrosion of Metal
P: Low pH.
S: Adjust pH with pH and Alkalinity Increase.
Green Water/Algae
P: Low sanitizer level or high pH.
S: Adjust pH, shock and/or adjust sanitizing cartridge as necessary.
Erratic pH
P: Alkalinity and/or calcium hardness are too low causing pH "bounce".
S: Test and adjust alkalinity and/or calcium hardness to bring them into
the ideal range.
SP A C A RE & E NJ O Y M E NT G UI D E
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