FCI Watermakers MAX-Q+, User Manual & Installation Manual

Page: 125 / 170

FCI WATERMAKERS, INC. 125 Troubleshooting
SYSTEM TROUBLESHOOTING GUIDE
(continued)
Problem Probable Cause Solution
High-pressure Pump
Won’t Run
Fuse blown on controller Replace fuse – see electrical diagram
Capacitors blown (run or start) Replace
Motor bearings failed Replace bearing
Thermal Overload tripped (if equipped) Press reset button
Loose wire in junction box Check and secure
Loose wire on control board Check and secure
Contactor faulty Replace
Loose wire on contactor coil , A1, A2 Check and secure
High pressure pump has seized Check and take necessary action
TDS FAULT Membrane Fouling Clean or replace membrane
Loss of feed flow from HP Pump Check pump RPM, Adjust Belt
tension, Service pump seals
Pressure too low Increase pressure to rated output
Product Probe Needs Cleaning Wipe down probe pins
Pressure not being applied to system
soon enough to allow for water to be
made prior to the 3 minute shutdown
Apply pressure when screen advances
to the “init” screen to allow for the
system to make water sooner
PERM FAULT
(Permeate)
System making water beyond rated capacity Reduce pressure to bring product flow
rate within design specifications
System has power,
but display is blank
Possible short on flow sensors or switches
resulting in power supply shutting down
Kill power to unit. Unplug the flow sensors
and transducers. Reapply power. If display
comes on, plug each component in one
by one and see which one brings the
screen down. Replace identified item
Power supply down on main control board Check output on power supply.
If not 24 VDC return to factory for repair
System has power, but
pumps will not turn on
Main fuse on control board has blown.
Usually caused by one of the coils
in the solenoids or contactors
Replace fuse. Monitor system and determine
at what stage the fuse blows. (Ex. When HP
pump starts, when fresh water flush solenoid
engages etc.) Check connections to that
component, secure wires or replace component
Table 3: System Troubleshooting Guide (continued)