Hi all. My HWH jacks with automatic leveling has always worked perfectly until the rainstorm. I drove about 50 miles in rain that was coming down so hard I could barely keep the windshield clear and there was probably an inch or two of standing water on the roadway the whole time.Something must have gotten wet underneath because when I touch the auto level button, it now jacks the left side up way higher than the right.My question: Are the sensors for the jacks underneath and susceptible to rain? How do I reset the sensors to level properly again? Thanks in advance...Don

"hotjag1".....not sure what chassis you have, but on my Freightliner, the leveling sensor is up high in my middle bay between the frame rails. It's about 6" long and 4" wide.I don't think I would mess with the adjustment quite yet. It sounds like you suspect and you got wires wet. If you change the adjustment and then the wires dry out, you'll be out of whack again. I would look for connectors that were susceptible to water and clean them.

My HWH jack sensor is the size of an upside down small saucer, about 4 inches in diameter, and located in my basement air conditioning bay. I understand HWH doesn't supply the sensor, but each manufacturer buys and installs whatever they want. My sensor has three screws on top that are adjusted to change the level settings. If the sensor is moved or bent by something (as happened to me), you'll have to reset the sensor to teach it what is level.As DSDP Don suggested, it is probably a wet electrical connection and not the sensor.

I have a Freightliner chassis and thought maybe this might have happened to someone else too. I have no idea where my sensors are located, but apparently they are not in a location where water can get to them. The motorhome has been parked for several days, so the connections should be dry. I will clean the connections and try the auto level tomorrow and see what happens.Thanks for the replies and suggestions.

"hotjag1"......Climb into your center bay and look up between the frame rails. It will be a black box as I described. I believe it had three twist nuts on top. I need to adjust mine, just haven't gotten to it yet.

Frtliner chassis has nothing to do with the HWH system.1. There are 3 different level sensors used by HWH. Yours is 11 years old.2. The older is the silver mercury filled sensor3. The one between the Silver and the current is a black sealed box about the size of a cigarette pack4. The current is located in the Plexiglas cover at the HWH pump assbly. I am not positive when they went to the Plexiglass outside control assbly mounted on the pump assbly. But, it is easy to figure out. Go to the HWH pump and if you do NOT see the control mounted to it with a clear plexiglass cover you have the older system. The 2 older systems use 3 spring mounted screws to hold and adjust the sensor. The Plexiglass control has the sensor mounted inside that control box and is adjusted at the Plexiglas area on the side. No screws on this one. Doug

HWH jacks not leveling properly. | Good Sam Community

13 Replies

hotjag1
Explorer II
Sep 17, 2014
I have a Freightliner chassis and thought maybe this might have happened to someone else too.

I have no idea where my sensors are located, but apparently they are not in a location where water can get to them.

The motorhome has been parked for several days, so the connections should be dry. I will clean the connections and try the auto level tomorrow and see what happens.

Thanks for the replies and suggestions.
Fishinghat
Explorer II
Sep 17, 2014
My HWH jack sensor is the size of an upside down small saucer, about 4 inches in diameter, and located in my basement air conditioning bay. I understand HWH doesn't supply the sensor, but each manufacturer buys and installs whatever they want. My sensor has three screws on top that are adjusted to change the level settings. If the sensor is moved or bent by something (as happened to me), you'll have to reset the sensor to teach it what is level.

As DSDP Don suggested, it is probably a wet electrical connection and not the sensor.
DSDP_Don
Explorer
Sep 16, 2014
"hotjag1".....not sure what chassis you have, but on my Freightliner, the leveling sensor is up high in my middle bay between the frame rails. It's about 6" long and 4" wide.

I don't think I would mess with the adjustment quite yet. It sounds like you suspect and you got wires wet. If you change the adjustment and then the wires dry out, you'll be out of whack again. I would look for connectors that were susceptible to water and clean them.

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HWH jacks not leveling properly.

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