Having problems with your Air Conditioners ?

I installed the rth2310 and it seemed pretty straightforward. I had R, W, Y, G, on the old thermostat, and hooked them up to the same, with R to Rh with the jumper in place. Now, the snowflake cooling symbol is on all the time, and when I turn on the heat, it just runs all the time. This is a zoned system. I replaced another thermostat at the same time, and it works fine (it had a black wire going to Y, but otherwise the same).

Answers :

You need a jumper between RC and RH.

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