2 part question about thermostat - http://www.hvacmechanic.com/ Forums
Original message
| timneedshelp
 |  "2 part question about thermostat"
, posted Sun 20 Apr 20:43  
My current digital thermostat will not let me lower the temp setting below 90. I thought this must be a thermostat issue so I went and bought a new Honeywell rth230b programmable electronic thermostat. I went to install the new one with Rh RC W Y G listed only to see that my old one has c r y1 w2 g o. So my questions are is this a thermostat issue and do I just need to buy a different thermostat to work with my old system?
Thanks
Tim
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Replies:
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| mikenew
| "Re(1):2 part question about thermostat" , posted Mon 21 Apr 09:17
What kind of stat is the original you may not have to change it
http://www.howtorepairairconditioners.com
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| smythers1968
| "Re(1):2 part question about thermostat" , posted Sun 20 Apr 20:50:
Do you have a heat pump?
If so the t-stat you purchased will not work
Also look on the old t-stat there may be a reset button that might correct your issue
Life lesson #12 Know when not to do it yourself.
WOW That Can Hurt!!
[this message was edited by smythers1968 on Sun 20 Apr 20:51] |
| | timneedshelp
| "Re(2):2 part question about thermostat" , posted Sun 20 Apr 20:58
It is a wall mount air handler Grand Air Heating and cooling systems. That is the extent of my Ac knowledge. However I can connect Old wires with letters to new thermostats with the same letters but beyond that I am lost.
Thanks
Tim
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| | smythers1968
| "Re(3):2 part question about thermostat" , posted Sun 20 Apr 21:03
Did you have a connection at the O terminal?
If so you have a heat pump. You need a different t-stat.
Life lesson #12 Know when not to do it yourself.
WOW That Can Hurt!!
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| | timneedshelp
| "Re(4):2 part question about thermostat" , posted Sun 20 Apr 21:12
I do have a connection at the O terminal. So I have learned something today. Thank You. If it gets to difficult I will refer back to your life lesson number 12.
Thanks
Tim
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| | smythers1968
| "Re(5):2 part question about thermostat" , posted Sun 20 Apr 21:15
Glad to help.
Life lesson #12 Know when not to do it yourself.
WOW That Can Hurt!!
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| | Houston204
| "Re(6):2 part question about thermostat" , posted Mon 21 Apr 23:00
If you also have a wire at W2, you have a multistage heat pump.
"Tip of the Day" Remember to remove power first.
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