Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

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Programmable T stat

Installed TB722OU Honeywell Commercial PRO Programmable Thermostat . Have a Trane Single Phase Heat Pump. Heat Pump starts in Heat Mode and when on Cool Mode won't reverse to Cool Mode.

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I have solved all the units except 1 unit. It is same Trane XE1000 HP w/ E heat Strip. Same problem with it except just programming the T stat to the type of System and also programming the reversing valve to energize in the Cool Mode., except it won't work on this particular unit, still running the WeatherThron Trane Tstat (old mercury type) jmfitzgerald Had 8 units to do now just one.

Posted on Jul 04, 2009

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Your trane heat pump energizes the reversing valve with O - orange y - is to turn on the unit make sure you have your orange wire hooked up and the tstat programming set to heatpump otherwise your reversing valve might be bad

Posted on Jun 30, 2009

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Honeywell Chronotherm thermostats have always had a great reputation for longevity and reliability. They are also much more user-friendly than the other types of programmable thermostats out there. Make sure you get one that states 2-stage heat, heat pump. T8611G will offer that for you. There are many out there that claim to be suitable for heat pumps; however, they do not have the ability to utilize your auxiliary heat strips (2nd stage of heat).
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Shastalaker7

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