Dometic 4000 Series Operation Manual page 12

Toilets
Fault
Water does not
stay in toilet bowl
(leaks between
flush ball and seal)
Toilet flushes in
both "Add Water"
and "Flush"
positions
Water leaks from
toilet onto floor
Green "OK to
Flush" light does
not illuminate
Red "Do Not
Flush" light does
not illuminate
EN
Possible cause
Flush ball seal is worn and needs
to be replaced
Flush ball is scratched or worn
and needs to be replaced
Cam switch/flush ball alignment
needs adjustment
Bolts that hold base to toilet
need tightening to 20-25 in .-lbs
Defective circuit board
Loose water line connection
Defective water valve
Toilet bowl seal is defective
Mounting bolts holding base to
toilet need tightened to 20-25
in .-lbs
Loose wire at circuit board
Loose wire at "Flush" switch
Loose or defective wire between
vacuum switch and toilet
Defective green light
Loose wire at circuit board
Loose wire at "Flush" switch
Loose or defective wire between
vacuum switch and toilet
Loose or defective wire between
"Full Tank" relay and toilet circuit
board pin 8
Defective red light
Suggested remedy
See "Replacing the flush ball" on
page 14
See "Replacing the flush ball" on
page 14
See "Aligning Cam Switch/Flush Ball"
on page 13
DO NOT OVERTIGHTEN or damage
to toilet may occur
Replace circuit board
Tighten the water line connections
Replace the water valve
Replace the bowl seal . See
"Replacing the flush ball" on page
14
DO NOT OVERTIGHTEN or damage
to the toilet may occur
Check wires 3 and 6 of the circuit
board
Check green wire at the "Flush"
switch
Repair or replace the wires
Replace the status panel
Check wires 5 and 7 of the circuit
board
Check red wire at the "Flush" switch
Repair or replace the wires
Repair or replace the wire
Replace the status panel
12