A quick internet search and I did find 'Pachara Garnet Butterfly' for sale in Australia? That page left off the name Vanda. Do you have other Vanda? This particular plant is commonly known as Vanda Pachara Delight. It is a hybrid: Vanda karulea x Vanda Gordon Dillon. Your Pachara Garnet Butterfly appears to be a variation of the blue flowers of Pachara, in that the flowers for this hybrid are red.

A grand parent of this hybrid is Vanda coerulea (Vanda karulea). This specie is known for its very blue flowers and cool temperature tolerance--so if you are in a geography that gets a Winter season, it can tolerate cooler temperatures--but not very far below 50F. The rest of its DNA are tropical Vanda that doesn't experience much of a Winter--Vanda sanderiana, Vanda tricolor, Vanda dearei, and Vanda luzonica--are all from SE Asia. That is a lot of verbiage to get to the point that your Vanda, under 'normal' conditions does not have a Winter dormancy.

Any new orchid you would add to your collection, particularly Vanda, seem to have an acclimation period where they do not do anything. I own several Vanda that I bought a year ago, they are now starting to grow root tips. Fertilizer probably is a waste, in terms of stimulating a plant into growth. However, you can probably encourage and nurture the plant by giving it planty of water, lots of warm, fresh, humid air and bright light. I would probably give it some sort of root stimulant--I use a fantastic product called KelpMax, to encourage root growth--once a month.

It would be helpful--as others have noted, to have a picture of your plants. It would also be helpful to update your profile to include your location in this world. That way we can have a better understanding of your geography.