WP440L-Series Reverse Osmosis System
Installation Instructions and User Manual
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Operating Status Messages
The operating status of the unit is shown on the top line of the display. The following list describes the items shown for the
operating status.
STANDBY
- The unit is in the standby mode.
DELAY 99
- The unit is in the RO start delay. The number is the seconds remaining before the RO pump starts.
OPERATING
- The RO unit is operating.
TANK FULL
- The unit is shut down due to a tank full condition.
TANK FULL 99
- The unit is shut down due to a tank full condition. If the number is blinking, the tank full high switch has
cleared, but the tank full low switch is still active. If the number is on steady, both tank level switches have cleared and the
delay is counting down.
PRETREAT
- The unit is shut down due to a pretreat lockout condition.
PRESS FAULT
- The unit is shut down due to a pressure fault condition.
MEMB FLUSH 99
- Membrane flush is active. The number is the minutes remaining in the flush.
The TDS / Conductivity is shown on the top line after the unit operating status. When the unit is offline because of a
shutdown condition, the reading is replaced with
>
----
=
If the reading is over range, the reading is shown as
>
^^^^
=
.
The current operating hours are shown on the bottom line.
The current water temperature is shown on the bottom line after the operating hours. When the unit is offline because of a
shutdown condition, the reading is replaced with
>
---
=
.
Warning messages are also shown on the second line. If any warnings are active, the active warnings will alternate with
the normal displays for the bottom line. The following lists the warning messages.
HI TDS / Cond - The TDS / Conductivity reading has exceeded the programmed limit.
TANK LOW - The tank low input is active.
TANK LOW 99 - The tank low input has cleared, but the tank low restart delay is active. The number is the minutes left in
the delay.
OP HOURS EXCEEDED - The current operating hours have exceeded the programmed limit.
When J8 is in the D position, both the PF auto reset AND the PF retry functions are enabled. If a pressure fault condition
occurs, the PF retry function will operate as described above. If the retry function locks out, the PF auto reset function will
operate as described above. The PF retry and PF auto reset functions will continue in a 30 second, 5-minute, 30 minute
and 60 minute cycle until the pressure fault condition clears.
The unit can be operated with 1 or 2 level switches. With 1 level switch, the switch is connected to the tank full high input.
When this switch has been active for 5 seconds, the unit will shut down on tank full. TANK FULL will show on the display.
When the tank full condition clears, the display will show TANK FULL 99. The number is the tank full restart time and the
unit will restart when this delay times out.
For 2 level switch operation, the upper switch is connected to the tank full high input and the lower switch is connected to
the tank full low input. When both switches are clear, the RO unit will run. The RO unit will continue to run when the water
level rises, and the lower switch becomes active. When the upper switch becomes active, after the 5 second delay, the
RO unit will shut down. TANK FULL will show on the display. When the tank level drops and the upper-level switch clears,
TDS / Conductivity
Operating Hours
Temperature
Warning Messages
Tank Full Operation
