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honeywell rth8500

  1. HVAC
    Hi there, I'm needing some help on the wiring of a new thermostat. I've searched the forum and have yet to find an answer to my situation. I'm removing a Robertshaw model 300-202 thermostat for a Honeywell 8500D. I have an electrical heat pump system. My challenge is that I have wires...
  2. HVAC
    Outside Unit: Carrier 38ycc030300 Airhandler: FA4ANF030000AFAA Old T-stat: Bryant TSATBBNHP01B Problem: Replacement thermostat blows warm air for AC. Heat is working just fine with the heat pump. First time visitor. Here is the wiring: Red Wire to R White wire to O/B (based on config...
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