Subsequent to repairs made at Chassis Dynamics in Yuma, AZ...
When I brought the coach home and plugged it into shore power, the LEG1 voltage reading on the Aladdin is OFF in green. The LEG2 voltage reading is 124 in green. Interestingly, there is voltage on LEG1 because we checked the incoming voltage at the shore power cord and both AC breaker boxes... plus all three air conditioners will turn on (fan only is what I turned on). So I know the LEG1 voltage reported as OFF is not correct!
I opened the panel above the driver's seat to access the large Aladdin brain box (black box). I wiggled and unplugged/replugged all the wires that go into the black box. No change, it still shows OFF in green on the LEG1 voltage.
I opened the "unhandled" bay door, curbside, in front of the dual axle to access the Aladdin interface modules. I unplugged the LEG1 voltage with no change on the Aladdin screen - LEG1 voltage still OFF in green. I plugged it back into the interface box. I unplugged the LEG2 voltage and the LEG2 reading on the Aladdin screen went to OFF in red. I plugged the LEG2 voltage back in and the Aladdin screen returned to 124 in green.
Given the results of unplugging the LEG2 voltage from the ATS interface and getting an OFF in red, I would have thought that unplugging the LEG1 would have resulted in an OFF in red, as well. But it stayed as OFF in green.
What do you think is wrong - the LEG1 toroid voltage sensor in the transfer switch or something in the Aladdin black box over the driver's seat? Is there a LEG1 fuse along the line of wiring that may be blown?
Thanks for reading this and offering any comments... DTR