I can't get my HWH to turn on, all fuses checked ok

Vehicle transmission in ParkParking Brake fully on.Batteries fully charged.Start Key in correct accessory position.Optional key safety lock turned on.These are all things that I have not done in the past?

I once had a problem with the control panel with the lamps and switch attached. If I pushed down on the panel it would briefly come to life. I removed the cover panel with 4 screws and found the spring contacts between the panel and the circuit board below had lost contact. I stretched the springs slightly and reattached the panel. It's worked ever since. On another trip I found another fuse hidden in the engine compartment. Good luck.

Lark, Any kind of idea what kind of motor home, make, model, gas, diesel, etc???? Also, what model of HWH? Different models operate a bit differently and, gas or diesel rigs have an effect on the operation too because of air brake interlock systems. Scott

03 Monaco Windsor diesel it was working fine. I had it out for run came back and it would not dump & nothing lit up, checked the fuses OK

First off, we need to know which HWH system you have. When you hit the level button, do you hear the solenoid click? If not, you either don't have voltage to it, or the solenoid/relay is bad. There should be 2 solenoids - the main solenoid and another that runs the pump. Measure voltage at the positive (small) post on the main solenoid. If you have voltage there and it isn't energizing, the solenoid is bad. If you don't have voltage there, it's probably a fuse or ground problem. If the solenoid does click, check the large battery cable to ensure it has 12v from the battery.You can go to HWH's website and download their trouble shooting guide which will walk you through diagnostics.Also, be sure you have a good ground. Usually there's one grounding post where all the grounds connect. Be sure the connection is tight and making a good ground to the frame. (Incidentally, if you talk to an HWH tech, he will tell you that most problems they have are from bad grounds) If it's a 625 system, there should be a control box with a clear plastic lid with LED's and several fuses in it. You can check those fuses and see if any are blown.

HWH leveling system | Good Sam Community

T_A
Explorer
Sep 23, 2013
I once had a problem with the control panel with the lamps and switch attached. If I pushed down on the panel it would briefly come to life. I removed the cover panel with 4 screws and found the spring contacts between the panel and the circuit board below had lost contact. I stretched the springs slightly and reattached the panel. It's worked ever since.
On another trip I found another fuse hidden in the engine compartment. Good luck.
Pangaea_Ron
Explorer
Sep 23, 2013
Vehicle transmission in Park

Parking Brake fully on.

Batteries fully charged.

Start Key in correct accessory position.

Optional key safety lock turned on.

These are all things that I have not done in the past?

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