I'm happy to report this is now resolved. I called ITR HEAT (OASIS) today, and as always their customer service is outstanding. I know they must hate customers like me calling but they are always helpful and provide good direction. I explained the situation so he immediately said fuse but I pulled and inspected all. Then we talked zone board and I considered ordering one but I asked "what would you do" as I really just wanted to get a zone board on the way, he said he'd check the fuse and also test the fuse socket first. So I did, back 30 minutes to the RV storage to do the test so I could get back and get whatever I needed ordered before I depart on the 15th for the next trip. He said it was the top left fuse. I thought heat loop 2 was bottom left or second from bottom left. Regardless, I pulled them all but sure enough the top left fuse was blown. I replaced it and everything is now green! Shyeeeuh!
I think I got the bad fuse location from a google search and another post somewhere else. I looked at the manuals I have this morning (also in the Resource area of this site) to try to find the fuse layout. I can't find it. I looked on the ITR-HEAT.com web site, still not finding it. I may be skipping over it as this "Monday" (even if it's Tuesday) has been a hectic one. The manuals also say 5A fuse when in fact it's a 10A fuse so maybe the manuals are obsolete. I don't know.
If anyone has the correct fuse layout for reference of the next victim, please post it. By the way the zone board from ITR-HEAT is half the price from what's on Newmar's (newpar) site. No surprise there.
Anyways, this saga is finally closed for me. I may or may not dive in and change the summer loop pump as it is the noisy one but also I couldn't get the hose on the new zone 2 pump all the way (1/4 inch gap) which is on my mind so I probably need to get back into the box to rest my mind on that at least.
