System Troubleshooting
Problem
Possible Cause
Solution
Regenerant tank overflow.
a.
Uncontrolled refill flow rate.
b. Air Leak in regenerant line to air check.
c. Drain control clogged with resin or other
debris.
a.
Remove refill flow control to clean ball
and seat.
b. Check all connections in regenerant line
for leaks.
c. Clean drain control.
Flowing or dripping water at
drain or regenerant line after
regeneration.
a. Valve stem return spring weak.
b. Debris is preventing valve disc from
closing.
a. Replace spring. (Contact dealer).
b. Remove debris.
Hard water leakage after
regeneration.
a. Improper regeneration.
b. Leaking of external bypass valve.
c. O-Ring around riser pipe damaged.
d. System capacity too low due to incorrect
resin volume setting.
a. Repeat regeneration after making certain
correct regenerant dosage was set.
b. Replace bypass valve. (Contact dealer).
c. Replace O-ring.
d. Reset control and program resin volume
to correct setting.
Control will not draw
regenerant.
a. Low water pressure.
b. Restricted drain line.
c. Injector plugged.
d. Injector defective.
e. Valve disc 2 and/or 3 not closed.
f. Air check valve prematurely closed.
a. Make correct setting according to
instructions.
b. Remove restriction.
c. Clean injector and screen.
d. Replace injector and cap. (Contact
dealer).
e. Remove foreign matter from disc and
check disc for closing by pushing in on
stem. Replace if needed. (Contact dealer).
f.
Put control momentarily into brine refill.
Replace or repair air check if needed.
(Contact dealer).
Control will not regenerate
automatically.
a. AC adapter or motor not connected.
b. Defective motor.
a. Connect power.
b. Replace motor. (Contact dealer).
Control regenerates at wrong
time of day.
a. Control set incorrectly.
a. Correct the time setting according to
instructions.
Intermittent or irregular
regenerant draw.
a. Low water pressure.
b. Defective injector.
a. Set pump to maintain 20 psi at
conditioner.
b. Replace injector (Contact dealer).
No conditioned water after
regeneration.
a. No regenerant in regenerant tank.
b. Injector plugged.
a. Add regenerant to regenerant tank.
b. Clean injector and screen (Contact
dealer).
Backwashes or purges at
excessively low or high rate.
a. Incorrect drain controller used.
b. Foreign matter affecting valve operation.
a. Replace with correct size control
(Contact dealer).
b. Remove drain controller and clean ball
and seat.
Run out of conditioned water
between regenerations.
a. Improper regeneration.
b. Incorrect resin volume setting.
a. Repeat regeneration.
b. Reset control and program resin volume
to correct setting.
PENTAIR
Pro Elite Professional Series Pro Elite Demand Instruction Manual • 33
