Question about Honeywell Programmable Thermostat Heater
Help!!!!!! I bought the above programmable thermostat to replace an old HW mercury thermostat. I thought it would be an easy switch..wrong!
I have an oil-fired furnace - heat only - no A/C units. On tactual furnace, there is a White wire and Blue wire connected to each of two "Thermostat" terminals (both unmarked)
The old mercury thermostat I removed was connected by two wires (blue to one unmarked terminal and white to the other unmarked terminal). There was a red wire loose and unconnected/unstripped.
I installed the HW prog. thermostat.
On the new one the connections are Rh Rc (jumpered) W Y G.
Following the instructions for 2 wire installation (I assumed since the old once was hooked with two wires, the new one was also a 2-wire installation), I removed the jumper from Rh/Rc. (correct??)
Since there were no wiring instructions with the Thermostat (duh??!) I guessed and connected them as follows:
Blue to RH
White to W
Left the red hanging as per the original.
The ambient room temp was 76 degrees. When I change the set point to 82 and switch to "heat" to test the furnace, nothing happens.
I've tried the wires in a few diferent spots but nothing!!
do I have to now use the red wire in the new thermostat??
should I have removed the jumper?? (I have a second unit with jumper intact if need to use it).
Can anyone tell me how to connect it using the colored wires I have before I jump off a cliff!!
Thank you so much in advance,
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Posted on Jan 02, 2017
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