Welcome the both of you to irv2.
Here are some manuals
for the Triple E select the one that is yours with a slide in HWH SYSTEM and there maybe a trouble section to correct the problem.
The fluid tank needs to be full to the center of two lines on the bell shaft vent with all jacks retracted for starters.
If you open a T valve the springs should restore the jack piston in its sleeve.
If it does not than you may have a O ring in jack binding to prevent it.
I just replaced a jack that would extend but not retract , had to use a 6 ton jack to get piston stored in order to replace jack. Sometimes you can use a 2x4 if you have room to get under jack. Cost $ 400.
CIMPLEX, I do not see a system for Fleetwood
are you sure you have a HWH system.
You should start a new thread for your problem.