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jayres 10-19-2009 01:04 AM

cold setting starts heater on new thermostat
 
just installed a honeywell rth221 and when placed in the heat position, it heats and when in the cool position, it heats. Why can i not get cold air? Old thermostat was a lenox with R, Y1, G, O, W1, C,. New thermostat has only Y G on one side and Rh, Rc, and W on other with removable jumper connecting Rh and Rc.

newtech 10-19-2009 04:35 AM

Quote:

Originally Posted by jayres (Post 342625)
just installed a honeywell rth221 and when placed in the heat position, it heats and when in the cool position, it heats. Why can i not get cold air? Old thermostat was a lenox with R, Y1, G, O, W1, C,. New thermostat has only Y G on one side and Rh, Rc, and W on other with removable jumper connecting Rh and Rc.

Do you have a heat pump? On the old t-stat, was there a wire connected to the O terminal?

jayres 10-19-2009 07:41 AM

heat pump
 
Quote:

Originally Posted by newtech (Post 342631)
Do you have a heat pump? On the old t-stat, was there a wire connected to the O terminal?

yes there was a wire connected to the O terminal. but did not use it on the new thermostat.

newtech 10-20-2009 04:26 AM

You need a Heat pump t-stat. O is for the reversing valve.http://yourhome.honeywell.com/Consum...ek/Default.htm Look at the bottom of the page under compatibility.


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