MARLO MR-210-2 - Troubleshooting Softener - Advanced Issues; Restricted or No Drain Flow During Backwash; Loss of Softening Resin

MR 150M–1050M SINGLE – MXIII CONTROLLER
MAINTENANCE
44
TROUBLESHOOTING
DETECTED ERRORS
NOTE: It can take up to 30 seconds for an error to be detected and displayed. All errors on each timer in the
system must be displayed before the errors can be corrected.
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 ow meter and update the volume re-
maining. 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 rst.
PROGRAMMING ERRORS
During the error condition the control continues to monitor the ow meter and update the remaining capacity. Once the
error condition is corrected all units return to the operating status they were in prior to the error and regeneration is
queued according to the normal system operation. If reprogramming the unit in the Master Programming Mode clearS
the error, the volume remaining may be reset to the full unit capacity (i.e. as though it were just regenerated).
1. All units in standby go In Service.
2. Any unit in regeneration when the error occurs completes regeneration and goes to In Service.
3. No units are allowed to start a regeneration cycle while the error condition exists.
When the problem 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.
Programming Errors Detected:
• Duplicate unit addresses or numbers
• Size of system (ex: if sized for a 4 units, and only have 2 units)
• Display format mismatches
Solution:
• Program the units correctly in the Master Programming Mode.
NOTE:
If these errors are detected, numbers 1 through 3 become true, and the main screen (time of day) will alter-
nate with an error screen.
CAUSE CORRECTION
A. One or more units have a missing or bad communication cable. A. Connect the communication cables and/or replace.
B. One or more units has a communication cable plugged into the wrong
receptacle.
B. Connect the communication cable as shown in the wiring diagrams.
C. One or more units is not powered. C. Power all units.