Question about Honeywell Heating & Cooling
Your red wire from the old R terminal goes to both the R and Rc terminal on the new stat. Other wires from old stat move to same terminal on new stat. You will not have any connections to the B or O terminal. Sounds like you probably already have it hooked up right though. This thermostat is what we call a power-stealing thermostat. It "steals" is power by running a trickle current to the transformer from the R terminal back through the W terminal. This meathod requires a standard resistive type thermal relay for the heating system. If you have an electronic type circuit board, many times they do not provide the proper type of connection for the thermostat to "steal" the necessary amount of power to run on. This is solved by installing a resistor from W to C in the furnace. If you have a standard electric furnace with thermal relays, then the problem is most likly the thermostat
Posted on Jun 23, 2008
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Posted on Jan 02, 2017
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