Clearing Blockage in Toilet Base

Troubleshooting Guide (cont’d)

Problem	Possible Cause	Service Instructions

12. Water does not stay in toilet	a. Flush ball seal is worn and needs	a. See instructions on page 15 for
bowl (leaks between flush ball	replaced.	replacement.
and seal).	b. Flush ball is scratched or worn	b. See instructions on page 15 for
	and needs replaced.	replacement.
	c. Cam switch/flush ball alignment	c. See instructions on page 14 for
	needs adjustment.	adjustment.
	d. Bolts that hold base to toilet need	d. DO NOT OVERTIGHTEN or
	tightened to 20-25 in.-lbs.	damage to toilet may occur.

13. Toilet flushes in both ADD	a. Defective circuit board.	a. Replace circuit board.
WATER and FLUSH position.

14. Water leaks from toilet onto	a. Loose water line connection.	a. Tighten water line connections.
floor.	b. Defective water valve.	b. Replace water valve.
	c. Toilet bowl seal is defective.	c. Replace bowl seal. See
		instructions on page 15.
	d. Mounting bolts holding base to	d. DO NOT OVERTIGHTEN or
	toilet need tightened to 20-25	damage to toilet may occur.
	in.-lbs.

15. Green OKAY TO FLUSH light	a. Loose wire at circuit board.	a. Check wires at pins 3 and 6 of
does not illuminate.		circuit board.
	b. Loose wire at Flush Switch.	b. Check green wire at Flush
		Switch.
	c. Loose or defective wire between	c. Repair or replace wires.
	vacuum switch and toilet.
	d. Defective green light.	d. Replace Status Panel.

16. Red DO NOT FLUSH light	a. Loose wire at circuit board.	a. Check wires at pins 5, 7 and 8
does not illuminate.		of circuit board.
	b. Loose wire at Flush Switch.	b. Check red wire at Flush Switch.
	c. Loose or defective wire between	c. Repair or replace wires.
	vacuum switch and toilet.
	d. Loose or defective wire between	d. Repair or replace wire.
	tank FULL relay and toilet circuit
	board pin 8.
	e. Defective red light.	e. Replace status panel.

17. Flush ball opens and closes,	a. No electrical power to vacuum	a. Check power wires, fuse or
but waste does not leave	pump.	circuit breaker to vacuum
bowl (no vacuum).		pump.
	b. Tank FULL shut-down relay	b. Pump out holding tank.
	prevents vacuum pump from
	operating.
	c. Blockage inside bottom of toilet	c. See instructions below to clear
	base.	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.

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Dometic 4806 Clearing Blockage in Toilet Base, Locating Potential Vacuum Leaks in Toilet Base

Models: 4806 4809 4848

Troubleshooting Guide (cont’d)

Problem