1nolaguy Posted November 10, 2022 Share Posted November 10, 2022 Hi All. So far the fall has been pretty mild in the mid-west (Ky & TN) but it is fixing to get very cold in a few days. This spring we had to replace both of our A/Cs and switched from Penguins to Recpro (Horton) heat pumps. So far these have worked well, although the controls are a bit wonky, but HPs only work down to about 40 deg. These have independent controls at the ceiling units and do not connect to the original thermostat that use to control the lp furnaces (we have two) as well as the original A/Cs. The tech that did the replacement placed the old "brains" from the original a/cs inside the new units and said that the furnaces would continue to work off the wall thermostat, but today I decided to test them in anticipation of the coming cold and discovered the thermostat has no power and so no control of the LP furnaces. Can anyone in the group advise how best to get the furnaces going? I thought of possibly just replacing the old thermostat with a furnace only thermostat but am not sure what to do concerning the wiring. As I recall app the wiring to the original thermostat that controlled both the A/Cs and the Furnaces is connected via an RJ11 (phone plug) connection. Link to comment Share on other sites More sharing options...
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