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Discussion Starter · #1 ·
On a Carrier Infinity package heatpump, I have been told I have to use a 4 wire UI controller. The stat i have is a Carrier one-for all t-stat. P/N TSTATCCPF701. Will this stat work with this unit, or do I need one that is designated an Infinity controller? This is the first Infinity I have encountered so I am not to sure about what will work and what wont. Thanks ... oh, and sorry for the duplicate post...my first day on the forum!
 

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Some differences

You can use any digital heat pump thermostat the only thing is you lose the ability to run the indoor fan at high, medium, or low. Also the ability for diagnostics. And wiring convenience since 4 wires has the potential to heat in multiple stages, cool in multiple stages, humidify, dehumidify and control a ERV or Hrv.
 
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