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TIMER DISPLAY
System
Network
Valve
Number
Indicator
State
Indicator
Blue LED
On - Unit in Service
Blinking - Regeneration Queued
Green LED
On - Unit in Regeneration
Blinking - Unit in Standby
Red LED
On - Error present
Left Button
Down Button
Press:
Press:
Navigate to previous
Adjust menu value down
menu option
Press and Hold:
Press and Hold:
Enter Time of Day menu
Enter Diagnostic menu
Left Button + Down Button
Press and Hold -
Enter Master Programming
Display Icons
Valve State: Service
Valve State: Standby
Flow Indicator (flashing)
Regeneration
Master Unit (auto-assigned)
Network Indicator - Connected
Network Indicator - Disconnected
Network Indicator - Unit Missing
USB Connected (Field Programmer)
Error Condition Present
Remote Lock
4 • Pentair Fleck NXT2 Timer
Flow
Status
Master
Time
LEDs
Indicator
of Day
Display Screen
Alternates between
Date, Flow Rate, and
Volume Remaining
(If a regeneration is
queued, displays time
until regeneration)
Up Button
Extra Cycle Button
Press:
Press:
Adjust menu value up
Navigate to next
menu option
Press and Hold:
Enter Time of Day menu
Press and Hold:
Initiate a regeneration
Down Button + Up Button
Press and Hold -
Enter User Programming
Lock Window
Initializing
Upper Drive Movement
Lower Drive Movement
Remote Regeneration
Master Programming
User Programming
Diagnostics
Time of Day Programming
TIMER OPERATION
Setting the Time of Day
NOTE: Set Time of Day on any unit and the rest of the units in
the system will update the Time of Day automatically.
1. Press and hold the Up button for 2 seconds.
The "Time" value is displayed. Press the Up or Down
buttons to adjust as desired.
2. Press the Extra Cycle button to advance to the "Year" field.
Press the Up or Down buttons to adjust as desired.
3. Press the Extra Cycle button to advance to the "Month"
field. Press the Up or Down buttons to adjust as desired.
4. Press the Extra Cycle button to advance to the "Calendar
Day" field. Press the Up or Down buttons to adjust as
desired.
5. Press the Extra Cycle button to return to the normal display
screen.
NOTE: Press and hold the Left button to exit without saving.
Manually Initiating a Regeneration
1. When timer is In Service or Standby, press and hold the
Extra Cycle button on the main screen.
2. The timer advances to Regeneration Cycle Step #1, and
begins programmed time count down.
3. Press the Extra Cycle button once to advance valve to
Regeneration Cycle Step #2 (if active).
4. Press the Extra Cycle button once to advance valve to
Regeneration Cycle Step #3 (if active).
5. Press the Extra Cycle button once to advance valve to
Regeneration Cycle Step #4 (if active).
6. Press the Extra Cycle button once to advance valve to
Regeneration Cycle Step #5 (if active).
7. Press the Extra Cycle button once more to advance the
valve back to In Service.
NOTE: A manually initiated or queued regeneration can be
cleared by pressing and holding the Back button.
A system queued regeneration can only be cleared
by stepping through a manual regeneration. If
regeneration occurs for any reason prior to the
delayed regeneration time, the manual regeneration
request shall be cleared. Pressing the Extra Cycle
button while in regeneration will cause the upper
drive to advance to the next step immediately.
Timer Operation During Regeneration
In the Regeneration Cycle step display, the timer shows the
current regeneration cycle name the valve is in, or has reached,
and the time remaining in that step. Once all regeneration
steps are complete, the timer returns to In Service and
resumes normal operation.
CYCLE 1/5
BACKWASH
00:10:00
CYCLE 2/5
DRAW
00:60:00
CYCLE 3/5
CYCLE 3/5
CYCLE 3/5
CYCLE 3/5
CYCLE 3/5
CYCLE 3/5
CYCLE 3/5
RAPID RINSE
RAPID RINSE
RAPID RINSE
RAPID RINSE
RAPID RINSE
RAPID RINSE
RAPID RINSE
00:10:00
00:10:00
00:10:00
00:10:00
00:10:00
00:10:00
00:10:00
CYCLE 4/5
CYCLE 4/5
CYCLE 4/5
CYCLE 4/5
CYCLE 4/5
CYCLE 4/5
CYCLE 4/5
TANK REFILL
TANK REFILL
TANK REFILL
TANK REFILL
TANK REFILL
TANK REFILL
TANK REFILL
00:12:00
00:12:00
00:12:00
00:12:00
00:12:00
00:12:00
00:12:00
CYCLE 5/5
CYCLE 5/5
CYCLE 5/5
CYCLE 5/5
CYCLE 5/5
CYCLE 5/5
CYCLE 5/5
PAUSE
PAUSE
PAUSE
PAUSE
PAUSE
PAUSE
PAUSE
00:00:00
00:00:00
00:00:00
00:00:00
00:00:00
00:00:00
00:00:00
Press the Extra Cycle button during a system
queued Regeneration Cycle to immediately
advance the valve to the next cycle step position
and resume normal step timing.
Timer Operation During Programming
The timer enters the Program Mode in Standby or Service
Mode as long as it is not in regeneration. While in the Program
Mode, the timer continues to operate normally monitoring
water usage. Timer programming is stored in memory
permanently.
Timer Operation During A Power Failure
All program settings are stored in permanent memory. Current
valve position, cycle step time elapsed, and time of day are all
stored during a power failure, and will be restored when power
is re-applied. Time is kept during a power failure, and time of
day is adjusted upon power up (as long as power is restored
within 12 hours).
NOTE: The time of day on the main display screen will flash
for 5 minutes when there has been a power outage.
The flashing of the time of day can be stopped by
pressing any button on the display.
Flow Meter Equipped Timer
As treated water is used, the Volume Remaining display counts
down from the calculated system capacity to zero. When zero
is reached, a Regeneration Cycle begins if no other units are in
regeneration.
Pentair Fleck NXT2 Timer • 5
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