[Michael]

The Headhunter works on the venturi principle and to evacuate the toilet it requires a large flow of water under relatively high pressure.

I am assuming Royale designed the entire system correctly so my starting point would be to determine if something has reduced the dlow rate. Is the pump kicking on and delivering a good flow of water? Is the line to the toilet kinked or impeding water flow?

If the coach has an accumulator tank has the accumulator tank lost pressure and does it need an adjustment to the pressure on the bladder?

FWIW I recently installed a 1.4 GPM back up water pump in case my Mach 5 quits. But to get that to deliver the needed flow and pressure to flush the toilet I added an accumulator tank that discharges directly in line with the toilet flush valve. That anemic pump will pressurize the accumulator tank to 60 PSI and even though it will never be able to flush the Headhunter toilet on its own the accumulator delivers its whole contents almost immediately and the toilet works as it should.

The Headhunter toilet is all about flow rate and pressure. It only requires a quart or two but if it gets that delivery at the rate and pressure required even JDUB can use my toilet.

[Rick & Denise]

Gauge on pump shows 60psi. Hoses all look good with no kinks, leaks etc. Some signal is getting through as it does add a pint or so of water to the stool but without the huge gushing outflow of bygone days.

[Archived]

Does the coach have an accumulator tank and if so has it got the proper air pressure? May I assume the switch (button) is working and sending a signal of enough duration to open the flush valve? It has a timer.

The only other thing I can think to look at would be the flush valve. The valve is essentially a flow through device that is opened by a solenoid. Once opened the diaphragm that shuts it off allows water to flow through a small pin hole to balance the pressure on both sides of the diaphragm sealing off water flow until the next flush.

Six screws hold it together and you will see it’s simplicity. The typical problem is it will not shut off because some small piece of debris blocked the pin hole.

I’m confused because good pressure and flow is all it takes to make a good flush.

[Bob]

I’m not clear on the white lever, but assume it’s on the water line inlet side of the flush valve that can be turned to allow more or less water to flow through the vavle. If that valve is full open, you have 60 psi water pressure, when you push the button, the solenoid should open and the pump should run for about 5 seconds depending on how the timer is adjusted.

I’ve replaced the flush valve diaphram and spring and the timer and button, but none of those items had any effect on the water volume. Sounds like the problem is at the solenoid or as Jon pointed out, water pressure.

Headhunter is pretty good to deal with and can help with your troubleshooting. (800) 662-8557

[Roger]

We had to replace the adjustable timer switch on ours then all was well… It just had no pressure… ours was a small timer switch located inside the back of the toilet… we had a removable lid behind the toilet where all wiring was hidden and the switch in there was adjustable but no longer working… if my memory serves me correctly the new switch was just over $100 but well worth it… has worked flawlessly since and we can adjust it however we choose to.

The problem we had sounds exactly like yours does.

If this is your problem its an easy fix.

Cheers, Diane

[Rick & Denise]

Looks like toilet removal is in my immediate future as I cannot see the switch you refer to at all and my head does not fit beside the seat to see what may be behind it. That stinks:) I will call Headhunter Monday if I can’t get it going. Thanks to all for the input.

[Archived]

I think your issue is your timer, from experience. However, you need to do a little more troubleshooting to isolate the definite problem. If you can get a normal flush by moving the white lever back and forth, I think you are fine, mechanically. If you can get your hand behind the toilet under the push button,your in business. You will find a twisted pair of wires that will lead you to the timer which should be attached via Velcro to the underside of the toilet. There should be enough slack on the leads to pull the timer out. On the newer systems there are six wires, I have an older coach which only has four. You need to identify the two wires that go to your flush solenoid. You separate these two leads and touch the conductors for a second or two. This should give you the flush you are accustomed to, and verify a defective timer. If you cannot get your hand behind the toilet to those push button leads, that’s another issue. Headhunter is helpful, but I think they sell you items you do not need.

[jack]

Fred,

I’ll try a mirror and perhaps I can make out the little beast and grab his neck for a bit of testing. Thanks so much for the additional info!

[Archived]

Alvie…

Check your email… I went out to the bus and took pics of my set up and a picture of the timer.Hope it helps.

Cheers, Diane

[Archived]

Diane, all,

Thanks for the pictures…….very helpful. I reached in behind the stool last night at 12:15am (whole nother story) and pulled that sucker loose. I tried various settings on the flush knob and
was able to get some flushes, just not reliably. Will try crossing the wires
tomorrow morning to verify the problem. Thanks again for all the help. I’ll
report back afterwards, since inquiring minds need to know how to go:)

[Archived]

Fred,

I tried your suggestion by touching the two wires together that go to the solenoid……..same old story, no reliable flush! Have call in to Headhunter, hopefully they can help me sort it out. Thanks.

[Archived]

Bet you anything you need a new timer Alvie… that’s exactly what happened to ours… once you have the timer it’s a 15 minute fix… the fact that you said it made a small difference when you were messing with the timer proves that it was malfunctioning and had power.

Diane

[Archived]

I did receive a return phone call from Scott at
Headhunter and after discussion he surmised the solenoid has bit the dust and
he is over-nighting one to me. I’ll install tomorrow and report the results.

[Jim]

Hey Alvie…

Is it working now??? If so what fixed it?

Cheers, Diane

[Larry & Diane]

I am also having trouble with the length of time with the flush. I have adjusted the timer several times but it appears to be erratic. I spoke to Headhnter and bought both a timer (SBTD-MOD) and a 12v solenoid valve operator (VO-1200). I have located the timer which will be a straight forward change. Where is the solienoid located – i have heard it may be in the bay by the pump or tank?