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Problem connecting PTAC to remote thermostat
Still working on this PTAC in our addition:
I'm trying to improve a marginal situation by operating an older PTAC
with a remote thermostat rather than the unit's poor built-in controls.
Little direction is available from Amana (Goodman) or the manufacturers
of the two thermostats I've tried. Previously I had connected an old
Honeywell T87F (round, mercury) t-stat that I'd removed from another
location. It worked in cooling mode but not heat; it could not energize
the fan circuit in heating mode. Rather than rig up something with a
relay I decided to just grab a cheap modern t-stat that should work with
Here's what I need to connect:
-Amana PTC093A35AB PTAC; single stage cool, single stage electric heat (no heat pump)
-LuxPro PSD011W thermostat
The wiring diagram for the PTAC is on page 17 here: <a href="http://becketthvac.com/manuals/Amana/PTAC/service.pdf">http://becketthvac.com/manuals/Amana/PTAC/service.pdf</a>
The diagram from the t-stat is page 2 here: <a href="http://www.luxproproducts.com/pdfs/PSD011Wa-022Wa_NL_ENG_Manual53.pdf">http://www.luxproproducts.com/pdfs/P...G_Manual53.pdf</a>
Here's how I connected these:
But it didn't work. There is power to the t-stat, the fan will operate
manually, but the PTAC does not respond to a call for heat or cooling.
The idiot light on the control board signals either OK or thermocouple
error. I should note that I've tried this with J2 on the T-stat set to
"electric" and "gas" but neither work.
Any thoughts on how to proceed? I called Amana, who sent me to Goodman,
who left me on hold for 25 minutes. Haven't tried Lux yet, based on m experience with Honeywell they'll just send me back to Goodman.