Kohler K-3393 - Manual (Page 21)

Troubleshooting Guide (cont.)
Symptoms Recommended Action
B.
Adjust the tank water level if it is too high.
C. Clean the valve inlet, valve head, or supply line.
Flush the lines.
D. An excessively high water supply pressure may
force the water through the fill valve. If required,
reduce external water pressure.
E. Foreign particles may be lodged under the float
valve seal. Clear particles from valve seat.
F. The float valve seal may be cracked or split.
Replace valve assembly.
5. The fill
cycle is
noisy.
A. Partially close the water supply shut-off valve if
the water pressure to the toilet is too high. Check
the toilet performance following any such
adjustment.
B. Remove dirt or obstructions from the valve head.
Flush the lines.
6. Pump
draws air
during
flush.
A. The water line height may be incorrectly set. Set
the correct water line height. Adjust the screw
clockwise in order to raise the elevation of the
float and the full water line.
7. No flush.
The pump
does not
operate.
A. The pump is not plugged in or the electrical
power is not on. Plug the three-prong plug from
the pump into Class A GFCI, or turn on power to
toilet.
B. The pump has locked out through its internal
thermal overload switch. Wait two minutes and
retry.
C. The trip button is not plugged in. Plug modular
plug of the trip button wire into jack in trip
button housing.
D. The trip button has failed. Replace the flush
button.
E. The pump has failed. Replace the pump.
8. Circuit
breaker
trips
frequently.
A. Check that the circuit breaker is properly sized
and has no other electrical loads.
B. If the circuit breaker trips while the pump is
disconnected, have an electrician correct the fault
in the wiring to the toilet.
Kohler Co. 21 1057478-5-C