Leaking Aquahot pumps

Topic: Leaking Aquahot pumps (Read 901 times) previous topic - next topic

Leaking Aquahot pumps

December 21, 2019, 02:40:39 pm

I have 2 Aquahot seals leaking when it is running. Would that be the seals.

Re: Leaking Aquahot pumps

Reply #1 – December 21, 2019, 03:15:49 pm

The O rings fail, find the post on replacing all 3 at the same time.

Re: Leaking Aquahot pumps

Reply #2 – December 21, 2019, 04:29:39 pm

Just an O ring that should be easy and yes I would do all three. Thanks

Re: Leaking Aquahot pumps

Reply #3 – December 21, 2019, 06:18:25 pm

You need to pinch off the engine loop along with the inlet and outlet hoses. Maybe Rudy will give more info. When I did mine I didn't pinch off hoses and had to drain the AH and the engine loop. Also a very special o ring the number is on the forum from when John did his.

Re: Leaking Aquahot pumps

Reply #4 – December 21, 2019, 09:41:01 pm

Thanks I will pinch off the engine hoes and the Aquahot needs the fluid changed.

Re: Leaking Aquahot pumps

Reply #5 – December 23, 2019, 09:07:23 am

I don't know why the A-H fluid would ever need to be changed. Just check PH annually.

Re: Leaking Aquahot pumps

Reply #6 – December 23, 2019, 10:32:33 am

Servicing Aqua Hot. Pages 11-13 specifically cover antifreeze, not just heat transfer ability with proper ph, but also anti corrosive benefits, thus requiring occasional changing.

Re: Leaking Aquahot pumps

Reply #7 – December 23, 2019, 11:32:13 am

Quote from: Jack Lewis – December 23, 2019, 10:32:33 am

Servicing Aqua Hot. Pages 11-13 specifically cover antifreeze, not just heat transfer ability with proper ph, but also anti corrosive benefits, thus requiring occasional changing.

Jack that information is for the newer Aqua Hot models that use boiler fluid. It doesn't have the same corrosion resistance as EL coolant

Re: Leaking Aquahot pumps

Reply #8 – December 23, 2019, 01:09:28 pm

I'm new to Aquahots so I am learning. What antifreeze should I be using. The person I bought it from said he was going to put the
same antifreeze that was in the engine and I have lots of that.

Re: Leaking Aquahot pumps

Reply #9 – December 23, 2019, 02:22:38 pm

It can use the coolant that the engine uses. Best if you can put the factory type ELC in the engine, Aqua Hot and generator. Then only have to carry one type of coolant on the coach. There was a lot of discussion a while back on the life of the different coolants, and a member even posted the conversation he had with the manufacturer. From what I can remember the Aqua Hot using the ELC would never need to be changed.

Re: Leaking Aquahot pumps

Reply #10 – December 23, 2019, 04:16:16 pm

That's the kind of antifreeze he gave me. Changing the O rings should be easy but getting the pumps out of there looks awful.
I haven't figgered out how to drain the system without making a mess.

Re: Leaking Aquahot pumps

Reply #11 – December 23, 2019, 05:17:34 pm

I drained the AH through the hole in the bottom of the AH bay into clean buckets and used a hand pump to put it back in. It would have been much easier if I had pinched off the lines. When you pull the pumps have rags under the whole area to avoid having coolant odor for some time to come. The service manual covers the how to part, it has be linked on the forum before. It is time consuming for sure but not rocket science.

Re: Leaking Aquahot pumps

Reply #12 – December 23, 2019, 08:41:46 pm

I found the drain and the pumps are out. It smells like antifreeze. Does the boiler fluid smell like antifreeze. The O rings are flat.

Re: Leaking Aquahot pumps

Reply #13 – December 23, 2019, 08:50:57 pm

On your year coach it is antifreeze in the boiler. Do you have the special red o rings?

Re: Leaking Aquahot pumps

Reply #14 – December 23, 2019, 09:16:05 pm

If you Aqua Hot heater has an electronic control board with led lights, you need GRAS Boiler Antifreeze such as Camco. If your heater has fuses and three clear relays, you can use the same engine antifreeze used in main engine and gen.

If you have a remanned heater, you need GRAS Boiler Antifreeze.

Re: Leaking Aquahot pumps

Reply #15 – December 23, 2019, 10:00:21 pm

Mine has the clear relay What is a remanned heater.

Re: Leaking Aquahot pumps

Reply #16 – December 23, 2019, 10:22:08 pm

Remanufactured

Re: Leaking Aquahot pumps

Reply #17 – December 23, 2019, 11:06:33 pm

How would I know if it is manufacturer

Re: Leaking Aquahot pumps

Reply #18 – December 23, 2019, 11:12:46 pm

It wouldn't matter, as long as you have the fuses and the clear relays, your model takes the same coolant as the engine.

Re: Leaking Aquahot pumps

Reply #19 – December 23, 2019, 11:32:32 pm

If you have the March 809-BR pump you are going to need to order the red silicone rubber o'ring. You can see them at the link below. You can also find them on eBay. Make sure you have the Bronze pump. That is why you have BR in the pump model number. Also the service manual covers the procedure for shutting down the system to remove the pumps. Attached is the service manual.
John M.
March 0809-0165-1000 Silicone O-ring

http://www.aquahot.com/files/service_manual/AHE-100-02S%20Service%20Manual%20Rev.%20B%209-27-2011.pdf

Re: Leaking Aquahot pumps

Reply #20 – December 24, 2019, 10:00:16 am

A remanufactured heater has the freshwater coil in the coolant tank. Hence the need for GRAS boiler fluid.

A reman heater will have a model number starting with "RM". AHE 100 will become RM 100.

Hope this helps.

Re: Leaking Aquahot pumps

Reply #21 – December 24, 2019, 11:57:40 am

My model # is 431/12. On the side is Aquahot By Vehicle Systems. I just found a tag on the over flow tank Shell ELC was serviced in
2016. What is GRAS Boiler fluid.

Re: Leaking Aquahot pumps

Reply #22 – December 24, 2019, 12:27:59 pm

Generally regarded as safe (for human consumption)

Re: Leaking Aquahot pumps

Reply #23 – December 24, 2019, 03:09:02 pm

John that's the pump I've got. Thank's everyone for the help. As it had antifreeze in it I am going to keep using it.

Re: Leaking Aquahot pumps

Reply #24 – December 24, 2019, 03:18:20 pm

Quote from: Rudy – December 23, 2019, 09:16:05 pm

If you Aqua Hot heater has an electronic control board with led lights, you need GRAS Boiler Antifreeze such as Camco. If your heater has fuses and three clear relays, you can use the same engine antifreeze used in main engine and gen.

If you have a remanned heater, you need GRAS Boiler Antifreeze.

What has changed within the boiler to require GRAS?
Is it a Potable Water safety issue?

Thank You

Tim

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