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TOPIC: Vacs flush toilets no power.

Vacs flush toilets no power. 18 Aug 2017 01:52 #1

  • yoeman
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2001 3788 with vacu flush seal and toilets has no power to either head.
Water will not drain from bowl on either head.
Plunger and hand in bowl showed no clogs.
Any help would be great.
This is a new boat to me and is on the hard so don't have much more info.
The holding tank does not show full.
All batteries are charged
Breakers are all in.
Could the system have an inline breaker or fuse.
Thanks

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2001 Bayliner 3988 330 hp Cummins 6bta m3
950
Located in Blaine Harbour Marina

Vacs flush toilets no power. 18 Aug 2017 02:40 #2

  • ksanders
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No inline fuse from the factory.

My bet is that there is a breaker off in your panel. Our 4788 has two brerakers marked FWD head and AFT head. Betting your 3788 does as well.

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KEVIN SANDERS
4788 LISAS WAY
SEWARD, ALASKA
www.mvlisasway.com

Vacs flush toilets no power. 18 Aug 2017 02:46 #3

  • W8N4SUN
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We have a 2001 3788 and only have a single head, didn't know there was an option for two heads?

On ours to have the head operate we must have the two DC switches in the On position:

FWD Head
Potable Water

Of course the main DC switch must be on as well.

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2001 3788 w/ 330 Cummins
Seattle, WA

Vacs flush toilets no power. 18 Aug 2017 03:00 #4

  • Pcpete
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Some of the best areound. www.marinesan.com/4809-vacuflush-s/152.htm
I don't know what model you have, but it might get you going. There might be a switch, probably around the lower Helm or in the heads that turns on the vacuum.
I just guessing.

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P/C Pete
Edmonds Yacht Club (Commodore 1993)
1988 3818 "GLAUBEN"
1980 Encounter Sunbridge "Misty Blue" (Sold)
MMSI 367770440
1972 Chevrolet Nova Frame off Resto-mod in the garage
Boating on the Salish Sea since 1948

Vacs flush toilets no power. 18 Aug 2017 04:26 #5

  • yoeman
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I will post back
Can't find the power source so will turn all on and see if I can get power to the pumps

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2001 Bayliner 3988 330 hp Cummins 6bta m3
950
Located in Blaine Harbour Marina

Vacs flush toilets no power. 18 Aug 2017 04:56 #6

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I will post back
Can't find the power source so will turn all on and see if I can get power to the pumps
Sorry for the confusion but this is for my 3988 2001

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2001 Bayliner 3988 330 hp Cummins 6bta m3
950
Located in Blaine Harbour Marina

Vacs flush toilets no power. 18 Aug 2017 16:18 #7

  • Bay39
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My breakers to my Master-flushes are both hidden on a wall in the equipment room where the Hot water tank is...You might try looking there?

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MY 3988
M/V MMPOWRD
Poulsbo, WA

Vacs flush toilets no power. 18 Aug 2017 23:47 #8

  • yoeman
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Searched for hours
The pumps work with dc power to them so it's got to be a fuse or switch Im
missing
Thanks

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2001 Bayliner 3988 330 hp Cummins 6bta m3
950
Located in Blaine Harbour Marina

Vacs flush toilets no power. 19 Aug 2017 00:14 #9

  • yoeman
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Nothing popped on the main panel
I only have the switches to turn the toilets
on
No power at the pump or switch

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2001 Bayliner 3988 330 hp Cummins 6bta m3
950
Located in Blaine Harbour Marina

Vacs flush toilets no power. 19 Aug 2017 01:27 #10

  • Pcpete
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I'm not familiar with how that system is wired, however, my feeble logic is that if you can bypass the switches and have the pump operate, but the switches don't have power, I gotta ask how and where are the switches connected to the pump? Seems to me that for most of these things the switch harnesses are usually pugged into some sort of controller panel. The connection might be to a pigtai, but if you can identify the switch wires, that are probably activating a relay on the controller, and jump the connections and get activity, it could be as simple as a bad connection. Some plugs are more sensitive than others. If you have a schematic, or even a model number so some of us can maybe find a schematic, it would help a lot.

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P/C Pete
Edmonds Yacht Club (Commodore 1993)
1988 3818 "GLAUBEN"
1980 Encounter Sunbridge "Misty Blue" (Sold)
MMSI 367770440
1972 Chevrolet Nova Frame off Resto-mod in the garage
Boating on the Salish Sea since 1948

Vacs flush toilets no power. 19 Aug 2017 05:19 #11

  • yoeman
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I phoned sealand and was advised that the motors are an issue
I connected a battery to the motors and both worked.
I found a windless breaker popped so may focus on that
I was also told some bayliners will shut pumps off if tank is full.
Tank watch is not showing full ?

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2001 Bayliner 3988 330 hp Cummins 6bta m3
950
Located in Blaine Harbour Marina

Vacs flush toilets no power. 20 Aug 2017 00:36 #12

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The toilets are not on a breaker. I pulled the main panel and I found 2 fuses on brown and yellow wires direct wired to the do bus bar
Odd but the springs in the fuse holders were weak and both toilets had poor connections.
New fuses and good to go.
Why would they install such an expensive toilet and run it off a 10 cent fuse.
Thanks for the help

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2001 Bayliner 3988 330 hp Cummins 6bta m3
950
Located in Blaine Harbour Marina

Vacs flush toilets no power. 20 Aug 2017 02:03 #13

  • Ahaua
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Thanks for posting Yoeman. I have the same boat and will make a mental note....good to know in case I run into the same problem. Btw, I don't know if you've encountered this, but the vacuum generator for the main head keeps cycling. I'm going to change out the duck bill valves for starters; any advice in case you've had the same problem?

Thanks,

Alex

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Alex
Orange County, Ca.
2001 3988
Twin Cummins 330's

Vacs flush toilets no power. 20 Aug 2017 03:42 #14

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Good to know you got it figured out.

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P/C Pete
Edmonds Yacht Club (Commodore 1993)
1988 3818 "GLAUBEN"
1980 Encounter Sunbridge "Misty Blue" (Sold)
MMSI 367770440
1972 Chevrolet Nova Frame off Resto-mod in the garage
Boating on the Salish Sea since 1948
Last Edit: by Pcpete.

Vacs flush toilets no power. 20 Aug 2017 06:30 #15

  • Grafty
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On my previous boat, a 3988, there were fuses, 10 amp I believe, located near the pumps in the cave accessed by removing a panel in the second stateroom. The water heater is also located in this area. As far as the pump continuing to cycle on a vacuflush system......quite often a bit of paper gets caught under the bowl seal at the bottom of the bowl. If you find the residual water in the bowl gone and the vacuflush cycling, take a toilet brush and clean that seal. I found this happens with some regularity.

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Bob and Lulu
1997 5788 'Starship' MAN 610s
1996 3988
1993 3058
Vida, Oregon

Vacs flush toilets no power. 20 Aug 2017 16:21 #16

  • Ahaua
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Thanks Bob. I'm going to track down those fuses on my 39 in case I run into the same problem. In regards to the vacuum generator cycling, the master head is holding water just fine so I must be losing vacuum somewhere else. Thanks for the advice; I'll continue to troubleshoot after I take care of a couple of higher priority items....lol....why didn't you warn me that there was so much work involved...haha. I should've bought your boat since you had done all the work already. It really is enjoyable though and we're loving it so far. Hope to see you sometime in the near future...

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Alex
Orange County, Ca.
2001 3988
Twin Cummins 330's

Vacs flush toilets no power. 20 Aug 2017 18:01 #17

  • baylineguy
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Mine stopped working after a mechanic did some wiring work for me. He just forgot to reconnect the ground wire from the head.

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1998 3587 Bayliner, Port Orchard, WA

Vacs flush toilets no power. 21 Aug 2017 05:40 #18

  • Grafty
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Alex, Be sure to check the guest head also because it is difficult to tell which generator is actually working because they are right next to each other in the cave.
Bob
The following user(s) said Thank You: Ahaua

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Bob and Lulu
1997 5788 'Starship' MAN 610s
1996 3988
1993 3058
Vida, Oregon
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