Quote:
Originally Posted by Jarredsdad  Can't find any Premier units with model starting ATA, all start with P.
In any case, L is used for lockout. If the unit goes out on Hi, Low press, freeze stat, or anyother safety the L output is energized and a light would also illuminate at the stat to warn the homeowner something is amiss.
Unless the IAQ has a fault light (I don't think it does) don't use the L wire. |
Quote:
Originally Posted by Jay11J The IAQ does have the red LED light on top left. that flashes along with the error code. |
The model is definately ATA040A100CLT. It's an older model (sold in '91, manuf in '90, I believe) sold in Canada, if that helps.
There is no significant voltage present on L when no lockout is present. I say "significant", because the needle on my voltmeter moved when I touched the leads but it was only a "bump". Probably some bleed-through from elsewhere, I suspect.
There is also no voltage present between L and C on the EIM.
Do you find it odd then, that there would be voltage present when the L wire is merely connected to the L terminal on the EIM?
I was studying the wiring diagram for the EIM, (heat pump systems page), which seems to indicate a connection from C to L. Do I need to break the L wire and connect it to both L and C?