Dennis,
Based on your first post, it appears that your coach has the original TRC Surge Guard 40250 transfer switch. Can you please verily this.
You said, “When plugged into shore power, Aladdin says no power selected and shows no voltage even though its there.”
How are you verifying that there is AC power in the coach? Make sure that the inverter is off, or you may see erroneous readings. Do your air conditioners work when connected to shore power?
"No AC Power Selected" on the Aladdin screen is actually an error message and indicates that your transfer switch has detected an error condition and has rejected the incoming AC power. This error can be internal to the transfer switch or due to the AC power not meeting the transfer switch parameters. When this occurs, the transfer switch should disconnect the coach from AC power.
From the Aladdin troubleshooting guide:
Aladdin Status Message: NO AC POWER SELECTED
Cause: The ATS has elected not to apply power to the coach due to an error condition or a required delay period.
The TRC 40250 ATS is capable of relaying multiple Status Messages, including error messages. Unlike the actual TRC Surge Guard monitor, the Aladdin interface can display only one message line at a time (the last one received). To view additional error messages, you need to watch the Aladdin screen during the time-delay phase, if anomalies are detected error messages should display during this period.
Turn the shore power off, then have a helper turn it back on while you watch the Aladdin screen to see if any additional error messages are displayed during the time-delay phase.
It could be helpful if you can post images of the Aladdin screen, both with shore power applied and with shore power disconnected.
Check out Coach Assist for the Aladdin trouble-shooting document, discussion related to the TRC 20450 ATS and the Aladdin interface (ASTM) starts on the middle of page 8. Error messages and possible causes follow. Ignore the section about the AC Interface, the ACI is for the previous version of the Aladdin interface.
-Scott