Pduggs

All I really need is the pump, plastic box, and grey water bypass connection. Is yours original to your coach and how many years of use?

Hey Ivy, I’m interested in buying your Sanicon. I’ve got all accessories so it might come in handy when like Tom mentioned, a long distance to the sewer connection is required. My gravity dump hose is only 15 feet. Can you send my details? Agreed. When I first bought the coach over five years ago, I was unfamiliar with the Sanicon. It took forever to dump. Then I read about the impeller. So I opened it up only to find an impeller completely worn down to nothing. It likely had never been replaced. Replaced it and cleaned it up, then it worked fine. I too used a stainless steel mesh in the shower to collect hair, after my first tear down of the Sanicon. Hair was all over it.

I like the Sani-Con Turbo 400s Turbo and know it’s the best choice but at $400-$500, I think I’ll stick to the gravity dump and save a few bucks.

I ordered a new pump on Amazon. The Shurflo 3200-001 12V Macerator pump. However I’m considering using the slinky as I’ve always carried it onboard, just in case. I was surprised how quickly it dumped my full grey tank. So, I may return the ordered pump.

It must have been original to the coach. It gave great service for a long time. The motor gave up the ghost. I’m debating whether to go with the gravity dump, though I liked pressing a button to dump tanks and don’t relish going back to cleaning a stinky slinky. What have others done when their Sanicon died?

Based on what I’ve seen, I don’t believe the original owner ever touched the hydraulic filter or changed the fluid.

I do have the ISL 425.

AW46

Mine has the big outside filter and one filter inside the reservoir.

I’ve used those too. Very effective in removing the old caulk.

You’ve sold me. We’re planning a 5000 mile trip this winter. So this improvement will be much appreciated.

Hi David, did the Watts improve handling? Did your coach wander before install? I haven’t noticed any wandering with my 08 Dynasty, so I’ve not bothered to consider the Watts Link.

I did reset the stat after I installed the new board. Zone 4 didn’t show up on the stat before, but after the reset it was there. Thanks for the tip on the phone plugs.

I’d like to thank Frank and Tom for their help in solving this problem and apologize for being difficult. This problem was new to me and my only weakness in maintaining my coach is a lack of understanding electrical issues. As they stated above, the new circuit board from Amazon (Dometic part#3312020) did the trick. Making sure to match up the two blue wires is obviously important, as both gentlemen advised. I merely removed the old circuit board and connected the two blue wires on the new board with the matching existing red and white wires on the connector, connected the two phone lines and the blue temperature sensor. Heat is now working in my bathroom as it did prior to the installation of the new ACs and thermostat. This was a very simple job which I made more difficult than it was. New board on left in pic and old on right.

Thank you!

I spoke with Dometic. They tell me this is the part I need. They referred me to Amazon to purchase. They weren’t familiar with my set up and didn’t sound very persuasive that it is right. Anyone have any thoughts on whether this is the right part? My mistake. The above pictured part is not the part Dometic suggested. It’s this one. I couldn’t find it on Amazon.

Thanks Tom. Frank did tell me about the hidden circuit board or “brain.” Here is a pic of it. Part number is similar to that on the schematic you sent. I’ll call Dometic today. I don’t want to be unjustly harsh on the folks at The Motorcoach Store, but I’d have thought they’d know this. Is Monaco the only coach maker that used this design?

No. The Motorcoach Store tech knows nothing about the hidden zone 4 controller. I emailed them a pic of it, but they claim it’s not necessary. They are now suggesting something is wrong with my AquaHot pump. Thus not their responsibility. Same old story with RV repair shops. I plan to call Dometic again to see if they can get me the correct control board. One would think when you pay over $8k for the installation of three new AC units at a high end RV service shop, that shop would know how to do the job correctly. Instead, I get excuses.

The tech has yet to fix the bathroom heat. The Aqua-Hot line to the register is cold. Blower at register is working. All other heat registers are functioning as expected including basement heat. The Aqua-Hot electronic controller (pictured) shows zone 1 and 3 are active. 2 is not. The tech says I should tap the 2 pump in an effort to get it running. He thinks it might be jammed up, but all the pumps are only a year old and all functioned as expected before the new ACs were installed. If the bathroom register works off zone 2 on the AquaHot, how do I get it to operate since zone 2 on the new thermostat doesn’t offer an Aqua-Hot option? Are the zones listed for the Aqua-Hot different from the zones on the thermostat?

Hey Frank, I called Dometic and they told me the 4th zone circuit board you thought was the culprit plays no part in controlling the Aqua-Hot with the new AC units. The Dometic tech told me an RJ-11 cable should run from the Aqua-Hot to one of the AC units specifically for the bathroom heat. Since I have heat in zone 1 and 2 (front and rear) I’m guessing the tech at The Motorcoach Store failed to connect this cable or failed to set the dip switch at my middle AC unit. I’m going to have to fix this myself, since the dealer seems incapable and they have no open appointments until after we leave Florida. So, I plan to pull the shrouds and see if an RJ-11 cable is connected and dip switch set to the closed position. I’m guessing I should have one RJ-11 cable connected at each of my AC units. I’m told I’ll have to do a reset of the thermostat after any change in the dip switch settings. Do you think this makes sense?

I contacted the RV dealer. They need a part number for the replacement board. I guess I have to locate that myself. I’ll call Dometic and see if they can help.

Thanks for your post. I now need to check my heat register in my wet bay. I don’t know if it’s heating. Hey Frank, do you know if the wet bay is also heated by zone 4, like my bathroom register is?

N Thanks.

Okay. How do I solve this problem? Call Dometic and buy the circuit board??? Is it a simple install. Or take coach back to dealer who should have known how to fix it?

Wow Frank. You are amazing. I was just now looking for the board and found this a short distance from the thermostat. Lots of cut wires. Not sure if that was done by the shop.