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Kuppajoe · 11-08-2014, 09:33 AM

I'm not sure if this point applies to the 400LP in the latest Apires or not. But if you have a complete loss of controlling 12 volt power to the Aqua-Hot system, first check the 25 amp fuse in the front electrical center box outside below the driver's window. It is the the lower of the two fuse panels. If it is good, then open the Aqua-Hot unit and check the upper 20 amp fuse on the higher left interior side of the box. I will say that Entegra CS as well as Aqua-Hot CS came to my rescue with a replacement circuit board that got cooked thanks to a metal drain valve in the Aqua-Hot that came loose. Why do these things happen on a cold weekend day?

PS: If you do need to replace that 20 amp fuse inside the unit, do it with a 10 amp fuse. It is better to stop it there than farther up the line such as your central control board.

Josh2129 · 11-08-2014, 02:41 PM

Thanks for the info, wasn't aware there was another fuse. Good to know when troubleshooting. Had to reset the system before I could get mine started after a complete power loss (oops). Pulled the front fuse and the thermostat fuse and it worked.

John

Kuppajoe · 11-08-2014, 05:21 PM

John, I hoped my misfortune would be helpful to others. Another thing some owners may not know is that the "Buck Boost Card" which can be seen in the on-line parts manual at the Aqua-Hot website is a circuit board and is what was burned out in the short that happened to mine. There are two of these Buck Boost Cards side by side on the lower right side under the front cover.

Josh2129 · 11-10-2014, 07:53 PM

Kuppajoe - that part sounds expensive. Thanks for the heads up.

John

Kuppajoe · 11-12-2014, 05:05 AM

Quote:

Originally Posted by Josh2129

Kuppajoe - that part sounds expensive. Thanks for the heads up.

John

Aqua-Hot sent the replacement Buck Boost Card at no charge in two business days so I cannot attest to the cost, but it was a plug-and-play install. The unit was up and running in a few minutes. The drain hose that caused the initial issue is now secured with three tie wraps and as soon as I can get my hands on a piece of baling wire, I will use that too!

The temperatures are going into the 20s in the next couple of days so it was a just in time repair.