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-   -   replacing old lenox thermostat with new RTHL3550 honeywell (http://www.diychatroom.com/f17/replacing-old-lenox-thermostat-new-rthl3550-honeywell-142823/)

dtthunbird 05-05-2012 09:12 PM

replacing old lenox thermostat with new RTHL3550 honeywell
 
I am having trouble with the proper wire hookup. The fan kicks on but the compressor does not.The Lenox is a mid to late 80"s model and has the rectangular thermostat with wires F, E, Y,R,V, and three unused wires I have no idea what they are for..The old unit is a heat pump /cool/ with emergency back up( strip heat).. Can someone please tell me how to wire this up to my new honeywell RTHL3550..Thanks amillion

diyorpay 05-06-2012 10:59 AM

Does this help?

http://www.google.com/imgres?imgurl=...BMAk&dur=12838

Technow 05-06-2012 11:41 AM

Why put a new thermostat on a 25 year old heatpump?

Are you having other problems with it?


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