VERY IMPORTANT - you need to find out which LNB you had at the old place, and see what you have at the new place.
It sounds to me that one location has the older DUAL SATELLITE QUAD LNB, and the other location has the newer TRIPLE SATELLITE QUAD LNB.
Your receiver is currently programmed for the LNB at the old location.
If I'm correct, and the new location has the other LNB, you will have to call Shaw and ask them to reprogram your receiver for the LNB being used at your new place.
Also, FYI, when your receiver is connected to a dish/LNB, you will always get a signal of 15 - 20 to start with, which confirms the receiver is connected to the LNB with a good length of cable.
When you disconnect the Satellite Cable from the back of your receiver, the signal will drop to 0 - 5