Where was it in WA State? I would be curious of the dealer, as ours did not know how to fix much. I fixed the door lock, and after they replaced the cook stove, I went over the work and fixed it better*. Regardless, prior to each trip, I check my HWH fluid level, and I carry 2 quarts spare fluid. I use the HWH brand, and it can be purchased at Camping World.
Closing the handle most likely speeded up the process as (if I understand if correctly) if forces the fluid through the solenoid valve, otherwise it flows through but does no work, however, I have not got the HWH system set in my head, so EM can give a better explanation. But I do understand the bleeding process, hope you checked your fluid level after every device was worked successfully.
Hope this keeps up and you can hit the road soon. Where you now and what are/is your destination? We are heading south soon.
*But beware, the front burner is the HO burner, and it gets the surrounding area so hot, including the knob, you might not be able to turn off that burner. So we choose not to use that one on High, only medium to low. Around the campfire, I will tell you the story about how we almost burned it down our first trip out.
Monty & Janet - 2007 Alpine APEX 40 MDTS
S/N - 75715 - Retired - Master Certified RV Tech