TROUBLESHOOTING
Detected Errors
If a communication error is detected, an Error Screen will alternate with the main (time of day) screen every few seconds.
•
All units In Service remain in the In Service position.
•
All units in Standby go to In Service.
•
Any unit in Regeneration when the error occurs completes Regeneration and goes to In Service.
•
No units are allowed to start a Regeneration Cycle while the error condition exists, unless they are manually forced
into Regeneration.
•
When an error is corrected and the error no longer displays (it may take several seconds for all of the units in a
system to stop displaying the error message), the system returns to normal operation.
NOTE: During the error condition the control continues to monitor the flow meter and update the volume
remaining. Once the error condition is corrected all units return to the operating status they were in prior to
the error. Regeneration queue is rebuilt according to the normal system operation. Or, if more than one unit
has been queued for regeneration, then the queue is rebuilt according to which one communicates first.
Message Displayed
Cause For Error
Correction
Flashing time
Power outage.
Program time by holding UP on Unit #1.
Detected Error = Matching Address Two or more units programmed with the same valve
address number.
Program each unit with unique valve
address number in Master Programming.
Detected Error = Program Mismatch Master program parameters do not match between two or
more controls.
Confirm Master Programming for each unit.
Detected Error = No Message #1
No power to Control #1.
Power Control #1.
Communication Cable to Valve Address #1 bad or missing.
Connect or replace Communication Cable.
Detected Error = No Message #2
No power to Control #2.
Power Control #2.
Communication Cable to Valve Address #2 bad or missing.
Connect or replace Communication Cable.
Detected Error = No Message #3
No power to Control #3.
Power Control #3.
Communication Cable to Valve Address #3 bad or missing.
Connect or replace Communication Cable.
Detected Error = No Message #4
No power to Control #4.
Power Control #4.
Communication Cable to Valve Address #4 bad or missing.
Connect or replace Communication Cable.
Detected Error = E2 Reset Unit
This message appears after a software reset.
Reprogram control using Master
Programming section.
Test Mode
Circuit Board was not programmed at factory.
Replace Circuit Board.
Black Squares on screen
Bad Circuit Board.
Replace Circuit Board.
INI on screen for more than 2
minutes
Circuit board not getting feedback from cycle switch.
Inspect Motor - should be rotating.
Connect wire harness to cycle switch.
Check Cycle Micro Switch.
CHG on screen for more than 2
minutes
Control programmed incorrectly as 2900 or 3900 valve type. Reprogram unit as Stager Valve type.
SERVICE ASSEMBLIES
48-00 ES Stager Assembly
61808-01 ....................Stager Assy, 48-00, NXT 24VAC, HMG No 2nd Aux Switch
61808-02 ....................Stager Assy, 48-00, NXT 24VAC, SA, 2nd Aux Notched in Service
61808-03 ....................Stager Assy, 48-00, NXT 24VAC, SC, 2nd Aux Notched In Backwash
61808-10 ....................Stager Assy, 48-00, Inverted, NXT 24VAC, HMG No 2nd Aux Switch
61808-20 ....................Stager Assy, 48-00, Inverted, NXT 24VAC, SA, 2nd Aux Notched in Service
61808-30 ....................Stager Assy, 48-00, Inverted, NXT 24VAC, SC, 2nd Aux Notched In Backwash
1074817......................Kit, Internal Parts, 48-00 Stager
61817-01 ....................Cam Assy, 48-00 NXT, HMG, no 2nd Aux Cam
61817-02 ....................Cam Assy, 48-00 NXT, SA, 2nd Aux Notched in Service
61817-03 ....................Cam Assy, 48-00 NXT, SC, 2nd Aux Notched in Backwash
51-06 ES Stager Assembly
61967-01 ....................Stager Assy, 51-06, NXT 24VAC, HMG, No 2nd Aux Switch
61967-02 ....................Stager Assy, 51-06, NXT 24VAC, SA, 2nd Aux Notched in Service
61967-03 ....................Stager Assy, 51-06, NXT 24VAC, SC, 2nd Aux Notched in Backwash
61967-04 ....................
Stager Assy, 51-06, NXT 24VAC, SH, 2nd Aux Notched in Refill
1074888......................Kit, Internal Parts, 51-06 Stager
61968-01 ....................Cam Assy, 51-06 NXT, HMG, No 2nd Aux Switch
61968-02 ....................Cam Assy, 51-06 NXT, SA, 2nd Aux Notched in Service
61968-03 ....................Cam Assy, 51-06 NXT, SD, 2nd Aux Notched in Backwash
NXT Stager Controller AU11