HELOC on "investment propery"

I had a HELOC at a great rate on a condo in San Francisco that itself has been paid off. The LTV was less than 50%. Recently I found that the HELOC was suspended (not closed, though it does not make any difference practically speaking). The reason provided was that it is no longer my primary residence. The condo is rented out to one former roommate + one more person after I moved to NY 5 years back. (I still pay the HOA, Utilities, one telephone line and internet). Is it possible to get a HELOC under these conditions at a decent rate or would I just be wasting my time trying to look?