06-10-2007, 09:36 AM
I have not been around the new LENNOX stuff,is it as good.The thermostat looks like the THERMIDISTAT so it appears the Carrier is better in that case.Lennox is a pain to get parts around here and everything seems to be just for Lennox and not standard like many.
06-10-2007, 10:26 AM
Lennox, their wiring diagrams suck. Parts are really high, but everyones parts are. you will do better getting parts off the net from Lennox dealers. When my heatpump was brand new (18 years ago) the electronic thermostat shipped with the unit didn't match. The indoor Expansion valve had their brazing slag in it. (held me up a week from moving in) The wiring terminals shown on the Tstat, indoor, and outdoor diagrams didn't match. I blew lots of boards, under warranty, till I upgraded the control transform with a Liebert 75va. Went thru "three" speed controlled motors, evap. motor with no vent holes would pool water in it. The breakers that are on the Id unit get condensate in them if the unit is installed in an unconditioned space, IE garage. The moist humid air comes around and thru the breaker and condenses on the cooler breaker. When it works, the Lennox sips energy, when it breaks I cuss it because it is so hard to work on. Some Lennox HP units will defrost the indoor coil if it freezes up, big plus for elevator machine rooms. Carrier, don't like the "E" coils or all aluminium coils. They don't support the refrigerant tubing in the OD unit so you get leaks. Some of the OD fans are noisy. The demand defrost board, never seen one work on demand, always did defrost on its timer. Indoor units plastic drain pans are cheesy, and can be hard to replace. The way some of the units are designed, if you have a condensate problem it will drip all over the boards and controls. Also I've had Carrier miss size the OD and ID units, they:rolleyes: fixed it with the accurator. This was on a commercial jobs where we needed high BTU, with an above ceiling ID unit.
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