HWH troubleshooting

[Buc1030]

I have read leveling jack conversations. However, I do need help. My slides work, leveling jacks do not. I have power to control board, I have power to solenoids / relays. Fluid level is at the bottom of the stick. What am I missing?

[Buc1030]

I forgot to mention make and model. It's a 2003 Winnebago, Itasca, horizon 36LD

[kwftlaud]

I'm just shooting in the the dark here as I don't have jacks on my rig but I do have HWH slides.

I think there is a solenoid that moves the pressured fluid from the slides side to the jacks side. Only one pump that works both systems.

When you engage the slides do you hear the pump?
When you engage the jacks do you hear the pump?
If you hear it both times, and yet the jacks don't work, look for that part that changes the fluid from one system to the other.
Kip

[veraken]

Contact Paul at AZPETE on the Irv2 forum. He works for HWH and can answer your questions. His email is pfmaddox@att.net and his phone number is 602-549-3638. He is a Commercial Member and has posted that his phone is always on, and if not answered, leave a message.

He has helped others, including me, on this forum and I am sure he can help you.

[Ray,IN]

What is the model # of your HWH leveling system? Use that to download the correct HWH service manual, it has an excellent troubleshooting section.
It can be a simple fuse, shuttle valve, or poor ground, or low battery voltage, faulty control board. IOW it can be many things, thus using the troubleshooting guide is required.

[OMMM4747]

Presuming the control panel is operational (it has lights), it rules out its fuse. However, it does not rule out dirty contacts. There should be 2 solenoids on the pump. Ensure all contacts are clean and corrosion-free; especially ground.

NOTE: Disconnect the chassis battery cables before doing any work on the solenoids. Label all cable/wire bundles and take pictures before disconnecting anything so reassembly is a breeze.

Oft-times however, the problem is the control board/panel.

Good luck

[Buc1030]

My system is a 310 series. To answer a few of the questions / comments. I've check all the fuses I have found so far, removed both solenoid/relays, replaced one. Pump works with slides but not jacks, control panel lights up but nothing extends. I do hear a clicking noise under dash, assuming it's the control board. Still nothing works. I've already used the operators troubleshooting manual.

[OMMM4747]

Recommend calling HWH Support to see what they say but I'm guessing you'll need a new control board. Hope they point you toward an easier fix.

Good luck

[Buc1030]

310 series, I've read the manual. Still moving forward to finding my issue. Part of owning used equipment

[Ray,IN]

Originally Posted by Buc1030

310 series, I've read the manual. Still moving forward to finding my issue. Part of owning used equipment

Did you download the Winnebago specific HWH 310 series service manual ? As I said earlier, it has an excellent troubleshooting section.


Did you test the 6 fuses on the control box yet?

[azpete]

do you have a service manual? if not, i can provide one n/c. i will need your email address.
check to see if 12+ is getting to the pump motor. using a 12 volt tester. check the cable from the pump relay to the motor., while pushing the right button on the touch panel.
if no power going to the motor, check the 12 volts to the small black wire on the pump relay, from the control box. if you have power at the small stud, and power at one of the large studs, i would suspect the pump relay.
on the pump relay, there are two small studs. one side with the white wire is the ground. the other side is 12+ from the control box. if no power from the control box, next step, is, using the service manual wiring diagram, check the 12+ connection between the control box and the touch pad. if no power, i would replace the touch pad. if there is power going into the box, i would replace the control box.
this is, given that you have already checked all fuses, grounds and connections for corrosion and tightness. rhere are several parts involved, so, check them all.
please feel free to call me at 602 549 3638. maybe i can help.
can you provide the AP model number on the silver tag on the control box. it will be on one side.
paul maddox
i work full time for hwh corp. i do not solicit part sales or service work on this forum.
im on mountain time. leave me a message. if i dont call back, call again, please.

[Buc1030]

I have the manual. No, I haven't pulled the control board out yet. I have to remove all the junk in front of it.

[Buc1030]

I do have power to both relay/solenoids. Power across small and big terminals. Not getting power across 40 amp fuse though. Checking further. Another question, since the slides use the same system I can only assume that the pump is getting power, slides work.
More to come. Thanks for getting with me on this.

[LoneTux]

Originally Posted by Buc1030

My system is a 310 series. To answer a few of the questions / comments. I've check all the fuses I have found so far, removed both solenoid/relays, replaced one. Pump works with slides but not jacks, control panel lights up but nothing extends. I do hear a clicking noise under dash, assuming it's the control board. Still nothing works. I've already used the operators troubleshooting manual.

I had a kind of similar issue recently.

- Have you disasssembled the 310 series control box to verify whether a socket is not burned?
- Have you checked whether the wiring has actual connection? You can do this by removing fuse and checking voltage, then re-inserting fuse and re-checking voltage.
- Even if there it voltage, somewhere along the way where the positive+ power supply splits into two, there can be an electrical damage caused for heat - this was the case in my example (other than burned out socket in HWH control box). You detect this kind of fault via using the leveling controls and checking voltage drop using multimeter (which is what I did)

Generally checking voltage drop on the control box while using it will also help you A LOT to detect what is the cause.

- When using leveling and slides control, a normal voltage drop should be from 12-13V to about 6V at minimum.
- If voltage goes lower than that, this indicates damaged wire/contact problem
- if voltage does not drop at all, that means there is zero connection somewhere, which means the wire is physically disconnected / a contact is rusty/moldy/dirty.


I quick-fixed my problem by running my own fused positive+ wire straight from battery box to the control button. It worked.


See my thread too:
https://www.irv2.com/forums/f54/rear...nk-664635.html