Dometic 4806 Benutzerhandbuch

13

12. Water does not stay in toilet 

bowl (leaks between flush ball 

and seal).

13. Toilet flushes in both ADD 

WATER and FLUSH position.

14. Water leaks from toilet onto 

floor.

15. Green OKAY TO FLUSH light 

does not illuminate.

16. Red DO NOT FLUSH light 

does not illuminate.

17. Flush ball opens and closes, 

but waste does not leave  

bowl (no vacuum).

a. Flush ball seal is worn and needs 

replaced.

b. Flush ball is scratched or worn  

and needs replaced.

c. Cam switch/flush ball alignment 

needs adjustment.

d. Bolts that hold base to toilet need 

tightened to 20-25 in.-lbs.

 

a. Defective circuit board.

a. Loose water line connection.

b. Defective water valve.

c. Toilet bowl seal is defective.

d. Mounting bolts holding base to  

toilet need tightened to 20-25 

in.-lbs.

a. Loose wire at circuit board.

b. Loose wire at Flush Switch.

c. Loose or defective wire between 

vacuum switch and toilet.

d. Defective green light.

a. Loose wire at circuit board.

b. Loose wire at Flush Switch.

c. Loose or defective wire between 

vacuum switch and toilet.

d. Loose or defective wire between 

tank FULL relay and toilet circuit 

board pin 8.

e. Defective red light.

a. No electrical power to vacuum 

pump.

b. Tank FULL shut-down relay  

prevents vacuum pump from 

operating.

c. Blockage inside bottom of toilet 

base.

a. See instructions on page 15 for 

replacement.

b. See instructions on page 15 for 

replacement.

c. See instructions on page 14 for 

adjustment. 

d. DO NOT OVERTIGHTEN or 

damage to toilet may occur.

a. Replace circuit board.

a. Tighten water line connections.

b. Replace water valve.

c. Replace bowl seal. See 

instructions on page 15.

d. DO NOT OVERTIGHTEN or 

damage to toilet may occur.

 

a. Check wires at pins 3 and 6 of 

circuit board.

b. Check green wire at Flush 

Switch.

c. Repair or replace wires.

d. Replace Status Panel.

a. Check wires at pins 5, 7 and 8 

of circuit board.

b. Check red wire at Flush Switch.

c. Repair or replace wires.

d.  Repair or replace wire.

e. Replace status panel.

a. Check power wires, fuse or  

circuit breaker to vacuum 

pump.

b. Pump out holding tank.

c. See instructions below to clear 

blockage.

1.  Turn off water to the toilet.
2.  Open the flush ball in Service Mode.
3.  Pull the foreign material from the 1-inch diameter orifice at the bottom of the base or, using a small diameter 

blunt rod, attempt to push the blockage through the orifice.

locating potential Vacuum leaks in Toilet base
The VacuFlush toilet is part of a vacuum system that includes a vacuum pump and vacuum tank, or a vacuum 

generator and discharge plumbing lines. If a vacuum leak is suspected, special equipment will isolate the source of 

the leak. If the toilet is determined to be the source of the leak, there are three possible areas to investigate:

1.  Flush ball and flush ball seal. See Problem 12 in Troubleshooting Guide.
2.  O-rings on the rotor shaft.
3.  O-rings around bottom of toilet base assembly.

Sources 1 and 2 will require the base assembly to be removed from the toilet and partially disassembled.