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255/460i Troubleshooting
7. Control
backwashes or
purges at
excessively low or
high rate.
a. Incorrect drain controller
used.
b. Foreign matter affecting
controller operation.
a. Replace with correct size
controller. (Contact dealer.)
b. Remove drain controller and
clean ball and seat.
Problem Possible Cause Solution
1. Clock does not
display time of
day.
a. Transformer cord
unplugged.
b. No electric power at
outlet.
c. Defective transformer.
d. Defective circuit board.
a. Connect power.
b. Repair outlet or use working
outlet.
c. Replace transformer.
(Contact dealer.)
d. Replace timer. (Contact
dealer.)
2. Clock does not
display correct
time of day.
a. Outlet operated by
switch.
b. Incorrect voltage or
frequency (Hz).
c. Power outages.
a. Use outlet not controlled by
switch.
b. Replace timer with one of
correct voltage and
frequency (Hz). (Contact
dealer.)
c. Reset clock.
3. Time display
continues to
advance.
a. Defective time set switch. a. Replace timer. (Contact
dealer.)
4. Time display
shows something
other than time of
day.
a. Electrical interference.
b. Defective circuit board.
a. Disconnect power to unit.
Restore power and reset
time of day display.
b. Replace timer. (Contact
dealer.)
5. No water flow
display when
water is flowing.
a. Bypass valve in bypass.
b. Meter probe
disconnected or not fully
connected to meter
housing.
c. Restricted meter turbine
rotation due to foreign
material in meter !
d. Defective meter probe.
e. Defective circuit board.
a. Shift bypass valve to not-in-
bypass position.
b. Fully insert probe into meter
housing.
c. Remove meter housing, free
up turbine and flush with
clean water. Turbine should
spin freely. If not, replace
meter. (Contact dealer.)
d. Replace timer. (Contact
dealer.)
e. Replace timer. (Contact
dealer.)
Problem Possible Cause Solution
1018075 Rev I.fm Page 29 Tuesday, February 17, 2004 4:26 PM