Loss of variable fan speed


  #1  
Old 04-09-21, 12:36 PM
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Question Loss of variable fan speed

What are the consequences of installing an Ecobee and losing variable fan speed in a thermostat communicating Carrier unit?

Model is 58PHB090

Bypassed this to wire direct to furnace:


 
  #2  
Old 04-09-21, 03:39 PM
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None as the variable speed was not being controlled by the old thermostat.

Also looking up that number your old furnace was not variable speed but multi-speed. Speed is set on controller board and normally never changed. Can be separate speeds for heat, cooling, and fan only.
 
 

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