Get Answers to your Appliance Repair Questions

Washer Parts  ·   Dryer Parts  ·   Refrigerator Parts  ·   Dishwasher Parts  ·   Range/Cooktop/Oven Parts  ·   All Appliance Parts 

Author Topic: Replacing old Airtemp Thermostat with a Programmable one  (Read 4980 times)

Offline Poz

  • VIP Member
  • Member Since: Feb 2011
  • Posts: 1
Replacing old Airtemp Thermostat with a Programmable one
« on: February 05, 2011, 10:00:45 PM »

I have a 1974 Chrysler Airtemp Packaged roof mounted HVAC unit.  The Airtemp thermostat has 5 wires going to terminals labeled R,Y,W,G and A.  The Lux Programmable thermostat does not have wiring diagram that matches my old thermostat.   I called their tech support and they suggested that I connect all but the A terminal wire and try it.  It did not work!  The unit would work in heat mode but the fan would not work on Auto, so it never came on.  I could put the fan switch to ON and the unit produced hot air if the thermostat setting was above room temp for heat.  I did not try A/C mode.  I can get the schematic from inside the enclosure on the roof and probably the model number of the HVAC unit.  There is no part number on the Airtemp thermostat.  Anyone have any useful suggestions on the 5 wire Airtemp thermostat replacement?

Offline jumptrout51

  • Technician
  • Member Since: Nov 2007
  • Posts: 1879
  • Country: us
    • Buy me a beer through paypal
Re: Replacing old Airtemp Thermostat with a Programmable one
« Reply #1 on: February 06, 2011, 07:37:38 PM »
What color is the "A" wire?
Take a Kid fishing.


Wiring Honeywell RTH7600 replacing Trane TCONT802AS32DAA Thermostat

Started by ashatzer

Replies: 4
Views: 1518
Last post May 22, 2016, 07:37:49 AM
by ashatzer
Airtemp furnace

Started by maypo52

Replies: 9
Views: 17550
Last post March 05, 2008, 02:36:32 PM
by JWWebster
Furnace fan keeps running after normal shutoff by thermostat.

Started by hleebeard@sbcglo

Replies: 1
Views: 10322
Last post January 10, 2009, 09:00:48 PM
by JWWebster
Thermostat Wire Color Code Explained

Started by Icehouse

Replies: 0
Views: 59113
Last post January 24, 2009, 02:23:17 PM
by Icehouse
Replacing low pressure control on refrigeration system

Started by harry

Replies: 11
Views: 11863
Last post May 30, 2009, 06:57:34 PM
by Icehouse
need thermostat recomendation

Started by madbchron

Replies: 1
Views: 3888
Last post December 14, 2009, 01:29:17 PM
by Icehouse