Autopilot Pool Pilot Digital Nano, Owners And Installation Manual, Page: 43 / 56

Page - 37
Error purify off / Check flow
Problem
Chlorine generation has stopped due to insufficient water flow.
Typical Solution
1. Turn on the circulation pump.
2. Turn the control valves to the correct position to allow water flow through the manifold.
3. If installed, check suction type vacuum cleaner for blocked or restricted water flow.
4. Check and clean the skimmer basket.
5. Check and clean the pump basket.
6. Check and clean or backwash the main circulation filter.
7. Clean the AutoPilot
®
manifold screen of trash or debris. For instructions to clean the screen, test the
flow switch, and clean the bypass valve refer to the "Maintenance" section of this manual. See "Test
Tri-sensor Flow Switch" on page 13.
8. Verify that the Tri-sensor cable is plugged in. Plug it in, using care to orient it correctly before inserting
into the unit.
9. Clean the cell if clogged with debris or calcium scale.
10. Check for air in the bypass manifold by loosening the top union on the cell to see if air or water comes
out. If air comes out then there may be a vacuum side leak or the pump may be undersized. Check for
leak at pump basket o-ring, leaking valve or fitting.
11. If the pump is a 2-speed pump, is it on low speed? The low speed may not create enough flow for the
manifold. If using a variable speed pump, increase the RPM.
Error purify off / Add salt xxx lb
Problem
Chlorine generation has stopped because the salt level is below 2,000 ppm (mg/L) (which is too
low).
Typical Solution
Add salt as indicated on the chlorinator display to bring the salt level up to 3,000 ppm (mg/L).
Warning! Add salt xxx lb
Problem
The salt level is between 2,000-2,300 ppm (mg/L) (which is low).
Typical Solution
This message will appear when salt is at 2,300 ppm (mg/L), or below. Add salt as indicated on
the Pool Pilot
®
display to bring the salt level up to 3,000 ppm (mg/L).
Error purify off Add salt xxx lb / Warning! Add salt xxx lb
Problem
Added salt as indicated by the chlorinator, but salt level still shows low.
Typical Solution
The pool volume has not been set up in the Installer Menu and is higher than the factory default
of 15,000 gallons (60,000 liters).
The salt sensor in the Tri-sensor may be dirty.
The salt display may need to be calibrated. See "Calibrate Salt" on page 21.