Excalibur Water Systems 1.5 “ HIGH CAPACITY SIMPLEX WATER SOFTENER Installation And Operation Manual page 10

Water Softener Regeneration and Error Screens;
Water Softener Regeneration Screen:
Water Softener control valve displays the time remaining
in the current cycle. Pressing the Water Softener regen
button advances to the next Water Softener cycle.
Water Softener Error Screen;
The Water Softener alternated Err and error code every 3
seconds. Clear the Water Softener error screen by
disconnecting the power at the Water Softener PC board
and reconnecting or press the Water Softener next and
regen Water Softener buttons simultaneously for 3
seconds.