Advanced programming and troubleshooting section.WARNING: Advanced programming shouldonly be performed by a qualified technician.This section was designed for the use of water treatmentprofessionals. Default settings are based on water conditionsat a typical installation. Before making any changes, consulta water treatment professional, as incorrect settings mayresult in a system malfunction. Programming the control isnot covered under the warranty.To access advanced programming, simultaneously hold downthe UP and DOWN buttons. This will allow you to enteradvanced programming settings P6 through P19 (see tablebelow).Advanced Programming ParametersMinimum UnitsParameter Description Range Increments of Measure NotesP6 Refill controller 1–99 1 gpm 0.33 gpm, both modelsP7 Brine draw value 1–99 1 Minutes 40L – 15 and 48L – 16P8 Not used N/A N/A N/A N/AP9 Backwash time 3–30 1 Minutes Skip this parameter to accept the defaultor enter a value.P10 Slow rinse time 8–125 1 Minutes GNPR40L = 67GNPR48L = 83P11 Fast rinse time 2–19 1 Minutes Skip this parameter to accept the defaultor enter a value.P12 Units of measure 0–1 1 0 = U.S.1 = MetricSkip this parameter to accept the default(U.S.).P13 Clock mode 0–1 1 0 = 12-hour clock1 = 24-hour clockSkip this parameter to accept the default(12-hour).P14 Calendar override 0–30 1 days 0 = no calendar overrideSkip this parameter to accept the default(no override).P15 Reserve type 0–3 1 0 = variable reserveP16 Fixed reserve capacity 0–70 1 percent of capacity Description depends on the valueor initial average value entered for P15 (Reserve type). Skip thisparameter to accept the default.P17 Operation type 0–1 1 0 = Not used1 = 5-cycle counter currentP18 Salt/capacity change 0–1 1 0 = Nonelock out 1 = salt/capacity change locked outSkip this parameter to accept the default(no lock out).P19 Factory defaults DO NOT 1 Loads in factory default values. DO NOTCHANGE CHANGE THIS PARAMETER.22