MODEL: N74A1-63510/N74A3-63610/N74B1-63510B/N74B3-63610B
35
3.7.Trouble-Shooting
A. Control Valve Fault
1. Softener
fails to
regenerate.
A. Electrical service to unit
has been interrupted.
B. Regeneration cycles set
incorrect.
C. Controller is defective
D. Motor fails to work.
A. Assure permanent electrical
service (Check fuse, plug, pull
chain or switch).
B. Reset regeneration cycles.
C. Replace controller.
D. Replace motor.
2.Regeneration
time is not
correct.
A. Time of Day not set
correctly.
B. Power failure more than
3 days.
A. Check program and reset time
of day.
B. Reset time of day.
3. Softener
supply hard
water.
A. Bypass valve is open or
leaking.
B. No salt in brine tank.
C. Injector plugged.
D. Insufficient water
flowing into brine tank.
E. Leak at O-ring on riser
pipe.
F. Internal valve leak.
G. Regeneration cycles not
correct.
H. Shortage of resin.
I. Bad quality of feed water
or turbine blocked.
A. Close or repair bypass valve.
B. Add salt to brine tank and
maintain salt level above water
level.
C. Change or clean injector.
D. Check Brine refill time.
E. Make sure riser pipe is not
cracked. Check o-ring and tube
pilot.
F. Change valve body.
G. Set correct regeneration cycles
in the program.
H. Add resin to mineral tank and
check whether resin leaks.
I. Reduce the inlet turbidity, clean
or replace turbine.
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