HWH Slide and Jacks 325A series problem.

[LPD218]

I have a 2004 Meridian with HWH system intermittently not working. Both slide switches stop working but the jack’s control has power I got us home by wiggling the pump motor solenoid wires. Once home I changed out the solenoid and slide switches don’t work. I checked the pump motor by applying 12 volts and it runs. There is good voltage at the solenoid so something is not energizing the solenoid when either slide switches are engaged. The solenoid has a top and bottom smaller posts with a white wire and a black wire and I am wondering if either could be the cause. Any help is appreciated.

[Zigzag03]

Specifics of your wiring I am not sure of, but generally speaking. The small posts on a solenoid have a ground, probably your black, and a signal or trigger from the switch, which should light up a test light when you push the switch. You can jump power to the white, see if it actuates the solenoid. You can also make sure the black is grounded. If this makes your device run, then you need to look for the signal coming from the switch. If nothing comes, chances are the switch isn't powered, or the switch is bad, or there's a break between the switch and solenoid. Also, as you have confirmed, the large terminals on the solenoid, one must have power, the other is the load. You may have an in and and out solenoid, or up/down for the jacks. If you lack the signal, go to the switch next.

[BobC]

These, from HWH, may help:

https://youtu.be/IeqQ4DWy2Nk?si=Su08RpvYa_dNcrUB


When you applied 12V to the pump, did you apply both + & -, or just +? If just +, the pump to ground connection may be faulty. This is a common problem.

[Morich]

Rather than random guesswork which may not mean much and just take a lot of time and effort, I would start with finding the manual for your system. This appears to be for the 325 series and has what looks like a good set of troubleshooting steps.
https://hwhcorp.com/ml37640.pdf

Since the slide function is also out, I might guess it is a fuse and it may have got blown while doing the solenoid change. Thins like that are fairly common if we are not following a speciifc set of things to do! Taking the wires off or putting them back may trip a fuse if not done in the correct order.

A fuse is shown on further down in the directions but I would not replace it until doing the troubleshooting to find if that fuse is the correct one or if it might be one of the fuses in the Winnbago wiring which feeds the HWH setup.

If you do the tests and it says power is not gettting the the HWH, then we can go into looking where that gets power, but first step needs to be sorting which system needs a look.
Is it a Winnebago problem or is it an HWH failure?

Just like at the house? No point in calling the power company when the lamp doesn't light when it is just the bulb burned out!
We need to find what and who is the fault, then move in that direction.

[Ray,IN]

Morich is right, HWH wiring is "married" to W wiring-by Winnebago.. This might be helpful: Winnebago-specific HWH leveling system and slide room extension service manual


IMO the first step is testing all the fuses on the control box. Looks can be deceiving.


note to creativepart; IMO that link should be in a sticky here.

[BobC]

Originally Posted by BobC

These, from HWH, may help:

https://youtu.be/IeqQ4DWy2Nk?si=Su08RpvYa_dNcrUB

When you applied 12V to the pump, did you apply both + & -, or just +? If just +, the pump to ground connection may be faulty. This is a common problem.

Sorry for that first link. I hope you enjoyed the song. Here's the correct one:

https://hwhcorp.com/winnebago2004_diagrams.html

And the second:

https://hwhcorp.com/ml37640.pdf

[LPD218]

Thank you for your responses!

I am one month since new knee and just don’t have the strength or mobility to hunt this issue down. Wife said to take it factory (HWH) and get it fixed. So that’s the new plan.

[BobC]

That's a good plan, fortunately you're close enough to do it. I'm sure they'll also do a complete check of everything so it'll be good for another 20 years.

[Morich]

I have to agree with knowing when to say "enough"!
The main problem with dealing with electrical problems on the jacks is that it has to involve three different sets of info. HWH has their part, connected to the Winnebago part as well as the Chassis builder's part! IF we could get all that info togehr, it likely would have changed by the time we found the info!

I'm currently dealing with the change from Windows 10 to 11 and much of the info on how to do things is already changing, so the online info means very near nothing!