3M SFT Series - Page 24

1.Water is salty
a. Salt setting is too high
b. Cyclone (distributor) tube too short
c. The inlet pressure is too low and unable o
flush out the drainage pipe
a. Check salt setting
b. Replace
c. Increase the water pressure with a booster
pump to flush the drainage pipe and check
or it need to replace the brine valve tank
2.Timer does not display
time of day
a. AC adapter unplugged
b. No electric power at outlet
c. Defective AC adapter
d. Defective PC board
a. Connect power
b. Repair outlet or use working outlet
c. Replace AC Adapter
d. Replace PC board
3.Timer does not display
correct time of day
a. Switched outlet
b. Power outage
c. Defective PC board
a. Use uniterepted outlet
b. Reset time of day
c. Replace PC board
4.Timer display incorrect
regeneration time
a. Power outage
b. Time is set incorrectly
c. The regeneration time is not correct
d. Faulty board
e. PC board incorrectly aligned to drive bracket
a. Reset time of day
b. Reset time of day
c. Reset the regeneration time
d. Replace circuit board
e. Ensure PC board is correctly snapped on
to drive bracket
5.Control valve stalled in
regeneration
a. Motor not operating
b. No electric power at outlet
c. Defective AC Adapter
d. Defective circuit board
e. Broken drive gear or drive capassembly cap
f. Broken piston retainer
g. Broken main or regenerant piston
a. Replace the motor
b. Repair outlet or use working outlet
c. Replace AC Adapter
d. Replace circuit board
e. Replace drive gear or drive
f. Replace drive cap assembly
g. Replace main or regenerant piston
6.Control valve does not
regenerate automatically
but does when "REGEN"
button is depressed
a. By-pass valve in bypass position
operation position
b. Meter connection disconnected
c. Restricted/salted meter turbine
d. Defective meter
e. Defective circuit board
f. Set-up error
a. Put bypass valve in normal
b. Connect meter to PC board
c. Remove meter and check for rotation
or foreign matter
d. Replace meter
e. Replace circuit board
f. Check control valve set-up procedure
7.Time of day flashes
on and off
a. Power has been out more than two hours,
the AC Adapter was unplugged and then
plugged back into the wall outlet, the
AC adapter plug was unplugged and then
plugged back into the board or the NEXT
and REGEN buttons were pressed to reset
the valve
a. Reset the time of day
Control valve failure error codes
Error codes
101
102
103
104
109
201
Error message
Un able to detect control valve operation
Unexpected stall
Control valve piston not in home
position seconds
Program error
Program error (runtime error)
Unable to proceed to next function
Possible solutions
Press NEXT and REGEN for 3 seconds
Check motor and replace if need;
Reinstall or replace PC board
Check motor and replace if need;
Reinstall or replace PC board;
Clean or replace drive gear.
Press NEXT and REGEN for 3 seconds
or unplug power source jack (black wire)
and plug back in to reset control valve
Check piston and spacer stack valve assembly
Reinstall or replace PC board
Reinstall or replace PC board
Faults
Analysis
Solutions