Having trouble with front jacks: will not lower or raise, even using Manual Mode. Had to call mobile tech service because we couldn't get the rv (5er with hydraulic jacks/slides) to raise in order to hitch up to get the 5er to our repair facility. This is a 6 jack leveling system. (The slides work fine, and so do the rear jacks).
Techs worked on it and with Lippert's Tech Support, determined that the front lead jack had a bad spade valve. We ordered the new valve, replaced it but didn't fix the trouble. Tech worked with Lippert support again, and after much detailed testing, determined that the dual polarity solenoid is defective, and not allowing enough voltage to the new spade valve in order for it to operate the lead jack.
Ordered the new dual polarity solenoid through Lippert but they don't have any in stock and it would take 5-7 business days to get the part, then 3 days to ship to my address.
The total cost from Lippert is $154, including tax and shipping. The techs looked at Amazon and the very same solenoid goes for $86 and will be here tomorrow (Wednesday). I don't mind businesses making a profit, but this is excessive.
On a positive note, the Lippert Tech Support were what you would expect when you call for help! Now if we could get the rest of the rv industry to step up, that would be a great benefit to us all!