Originally Posted by twilightcall
Is there a wire I can remove at the T-stat instead like the Aux wire or ?. Thanks.
Thermostat doesn't control strips during defrost. So the wire from the heat pump needs to be disconnected if you don't want aux heat during defrost.
The Honeywell IAQ(YTH9421) is the stat you should have gotten.
It would allow you to lock out the strip down to 5°F if you wanted to.
Disconnecting the strips from the stat is a bad idea. If you were to go away and the heat pump fail. You could end up with frozen and broken pipes.
One way you can lock out the aux with that stat until you really need it is to install the outdoor sensor in your house.
You can install it in your return duct if you want, and set it to 60. Then your house temp would have to drop to 60 before the aux came on.
What CPH do you have your heat pump set to. The lower that number, the quicker the aux comes on. But don't set it higher then 4.
Another thing you can do. Is connect the aux heat to W3 instead of W2. That will delay aux heat longer.