Kohler K-3393 User Manual download pdf (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

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Kohler K-3393 User Manual Page 21

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