9
EN
Toilets
5
TROUBLESHOOTING
Fault
Possible cause
Suggested remedy
The flush function
works, but the water
in the bowl empties
slowly or not at all.
The discharge pipe is pinched
or kinked.
Check discharge piping.
Discharge piping is not sloped
correctly.
Reroute the discharge pipe.
Minimum downward slope from
toilet to waste tank is 1/8" (3 mm)
per foot.
Discharge piping is blocked
Close the seacocks and clear the
blockage.
Check valve in the discharge line
is blocked.
Clear blockage or replace check
valve.
Water system pressure is too low.
Clear blockage at water valve
inlet or adjust water system
pressure switch.
Holding tank is not venting
properly.
Check vent line for blockage and
repair.
The water flow to the rim or lower
water jets is too low.
Increase the flow of the water jets
at the water flow control module.
Flush cycle does not
start after pressing flush
handle or switch.
Holding tank is full and electrical
power to toilet is shut off (when
installed with full-tank shutdown
option).
Empty the waste holding tank.
Electrical power to toilet is
disrupted.
Check wiring, circuit breakers.
Flush switch is malfunctioning.
Replace flush switch.
Water flow control module is
malfunctioning.
Replace control module.
Toilet flushes
continuously, or bowl
fills with water when
not in flush cycle.
Jet valve diaphragm or pilot hole
is clogged with debris.
Inspect/clean water system
strainers. Disassemble water
valve(s) and clean diaphragm or
pilot hole.
Water flow control module is
malfunctioning.
Replace control module.
