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MESSAGE DISPLAYED
PROBLEM
TYPICAL SOLUTION
No Error Displays
Salt level on display
does not match pool
store or salt test strip.
1. The test may have been faulty or the salt strips may
be old or damaged. Have salt level rechecked at local
pool store.
2. If the discrepancy is more than 400 ppm (mg/L), then
calibrate salt. See
“Calibrate Salt” on page 23 for
more information.
Warning!
Check/clean cell
See additional
troubleshooting on this error
later in section.
Conductivity of the
water is reduced;
usually caused by low
salt, cold water or a
scaled cell or a
combination thereof.
1. Check the salt level and adjust to between 3,000-
4,500 ppm (mg/L) or verify salt calibration.
2. For water temperatures below 65°F (18.3°C),
increase salt to 3,500
– 4,500 ppm (mg/L).
3. Remove and inspect the cell for white calcium scale.
(See section 6.3,
“Servicing the Cell” instructions on
page 15 in the Maintenance section of manual.)
The salt level is below
2,800 ppm (mg/L) &
temperature below
70°F (21°C).
Increase salt level to 3,500
– 4,500 ppm (mg/L) or
increase temperature on heater if applicable.
The salt display
differs from salt test.
Adjust salt display in the Salt Calibration mode. See
“Calibrate Salt” on page 23 for more information.
The cell is scaled.
1. Water Chemistry related problem (See Reference
section of manual, Water Chemistry and Saturation
Index topics).
2. The Digital Nano/Nano+ may not be reversing polarity
– contact your local AutoPilot Service Center.
Adjust water chemistry or adjust Set Reverse time
to a shorter cycle.
If this is a new
installation…
Verify the incoming voltage matches the voltage of the
Digital Nano/Nano+. (See Specifications and Installation
sections of manual.)
Warning!
Low Amps: Cell?
See additional
troubleshooting on this error
later in section.
Cell is completely
clogged from calcium
scale, may be
depleted, the cell cord
is loose or damaged.
1. Check cell for calcium scale buildup. Clean as
needed.
2. Check for visual wear on the edges of the terminal
blades which may be an indication that cell is
depleted. Replace if depleted.
3. Check the cell cord for tight connections on the cell
and on the power supply. Check the plug for burns.
Tighten or replace as needed.
The cell cord is
disconnected.
Verify cell cables are inserted fully into the Digital
Nano/Nano+ base cell connector.
The cell is heavily
scaled.
Remove and acid wash as described in the Maintenance
section of manual.
If this is a new
installation…
Verify that the incoming voltage matches the voltage of
the Digital Nano/Nano+. (See Specifications and
Installation sections of manual.)