HWH Hydraulic Jacks

Is your key on? Some won't operate with the key on. Also parking brake must be set.

It sounds like a relay operating (click). If you do not hear the hydraulic pump motor running it could be several things from dirty/corroded connections to an open winding on the motor.

Find the relay, (follow the click) check for voltage in and out, check the connections, (don't just look, remove, clean, replace)

There may be fuses at the motor, there are several in ours, which is a bit newer so it may be different. When our slides quit (same motor as jacks) the problem was an intermittent winding on the motor. Had to get the assembly replaced.

Good luck and please let us know what you find.

Time to break out the volt meter and see where you lose it. Go to the end and work backwards: Pump> Pump Solenoid > Control board output relay> Logic Relay. Depending on the age there are lots of LED's on the board to tell you what's going on..

(Edit iphone spelling)

If you post your model HWH it would be easier for folks to help. The easy things to check if you have the 200 series with the joy stick is the fuse in the control box I think it is a 3 amp glass fuse and the springs when you remove the to cover. There are 3 small springs that need to make contact with the control board.

That problem crops up on here frequently. It is most likely a bad ground. I had my tech put a new ground wire on mine and it has worked as new.

download a service manual from the hwh website for your leveling system.
it has wiring diagrams, and a diagnostic section that is easy to follow.
it should lead to a solution. it sounds like a failed 12 volt solenoid, but a hands on test will tell. pm me if you need help. i do work for hwh.

I found the fluid resevoir low on the HWH system I have on my 2002 Itasca Sunrise 32V. The two front jacks were not completely coming down or up, and then the front slide started to move very slowly when extending. I topped off the fluid resevoir and voila!, they work.

jsmart wrote:
I found the fluid resevoir low on the HWH system I have on my 2002 Itasca Sunrise 32V. The two front jacks were not completely coming down or up, and then the front slide started to move very slowly when extending. I topped off the fluid resevoir and voila!, they work.

Low fluid or NO fluid would NOT cause a HWH jack to retract slow or not at all. Doug

You don't say if you tried more than once over a period of time. I had a total hydraulic failure that "healed itself." Turned out a slide seal had dried out and stuck causing a self resetting circuit breaker to drop out. While I read a troubleshooting guide and scratched my head it reset and the next time I tried it worked fine tearing the stuck seal in the process :(

Thanks for all the help. It turned out to be ground fault in another area. Works fine now.