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12
4800 SERIES VACUFLUSH TOILETS
Problem Possible Cause Service Instructions
TROUBLESHOOTING GUIDE (cont’d)
3. Water does not enter toilet
bowl, but toilet ushes.
4. Water does not enter toilet in
“Add Water” switch position.
5. Water does not shut off and
toilet bowl overows.
6. Flush ball cycles constantly
between open and closed
positions.
7. Flush ball opens slowly.
8. Flush switch must be held in
FLUSH position to close ush
ball.
9. Flush ball does not close
completely.
10. Flush ball does not open
completely.
11. Squeaky noise occurs during
ush cycle.
a. Clear blockage in water line or
lter screen at water valve inlet.
b. Check wiring between water
valve and circuit board pins 15
and 16.
c. Replace if necessary.
d. Replace circuit board.
a. Check for loose or defective
wiring between ush switch
and circuit board pins 1 and 4.
b. Replace if necessary.
a. Replace water valve.
a. Check wiring between ush
switch and circuit board pins 1
and 4.
b. See page 14 for cam
switch adjustment/ush ball
alignment.
c. Replace cam switch. See page
15 for replacement details.
d. Replace drive linkage. See
page 15 for details.
a. Clean surface of ush ball and
under edge of seal. Lubricate
with alcohol-free cooking spray.
b. Replace spring.
a. Check wiring between cam
switch and circuit board pins
11 and 12.
b. Replace cam switch. See page
15 for details.
c. Return Service Mode switch to
Normal position.
a. See adjustment/alignment or
replacement details on page
14.
b. See replacement instructions
on page 15.
a. See instructions for repair or
replacement on page 15.
b. Replace spring.
c. Clean surface of ush ball and
under edge of seal. Lubricate
with alcohol-free cooking
spray.
a. Lubricate with alcohol-free
cooking spray.
b. Lubricate joint with silicone
grease.
a. Blocked water supply.
b. Loose or defective wiring.
c. Defective water valve.
d. Defective circuit board.
a. Electrical failure.
b. Defective ush switch.
a. Debris inside water valve or
defective water valve.
a. Electrical short circuit.
b. Cam switch needs adjustment to
align ush ball.
c. Defective cam switch.
d. Defective drive linkage.
a. Excessive drag between ush ball
and seal.
b. Defective spring assembly.
a. Loose or defective wiring.
b. Defective cam switch.
c. Service Mode switch is in Service
position.
a. Cam switch needs adjustment/
ush ball alignment or replacement.
b. Rotor cam shaft loose or
defective.
a. Rotor cam shaft is loose or
defective.
b. Weak or defective spring
assembly.
c. Excessive drag between ush
ball and seal.
a. Lubrication needed between ush
ball and seal.
b. Lubrication needed between drive
arm/linkage joint.