Page
11
of
12
Troubleshooting
Problem
Possible Cause
Solution
Filter Fails to
Backwash
a.
Power to controller has
been interrupted
b.
Backwash cycle times set
incorrectly
c.
Controller Damaged
a.
Check power
connection is ok
b.
Reset the backwash
cycle times
c.
Check or replace
controller
Filter passing
raw water
a.
Bypass valve is open
b.
Damaged riser pipe
c.
Internal Valve Leak
a.
Close Bypass Valve
b.
Check the riser pipe is
not cracked and O-
ring is ok
c.
Check or change valve
body
Water
pressure loss
a.
Filter requires a backwash
b.
Check no blockage in
pipework
a.
Backwash filter
b.
Unblock pipework
Loss of media
material
through drain
line
a.
Air in the system
b.
Backwash flow control to
high
c.
Top screen broken
a.
Bleed air from the
system. Check for
leaks
b.
Reduce Backwash
flow to suitable size
c.
Check and replace top
screen
Control valve
cycle
continuously
a.
Wrong size transformer
b.
Foreign material stuck in
drive gear
c.
Faulty valve
a.
Use correct
Transformer
b.
Remove Foreign
material from drive
gear
c.
Replace valve
Water flowing
through drain
line continually
a.
Power outage during
backwash or fast rinse
b.
Internal Valve leak
a.
Turn on Power, cycle
through to service
b.
Check or replace
valve body
All indicators
display on the
controller
a.
Wiring between the
display board and control
board failure
b.
Control board is faulty
a.
Check a replace cable
b.
Replace control board
c.
Check or replace
transformer
