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Furnace not heating up second floor (zone 2)
Hi everyone. I apologize if I am writing about the same issue, but I haven't found specifics to help my situation. I just realized recently that my second zone upstairs is not heating up, but working on the first floor (zone 1). The furnace is in the basement, and since it is heating zone 1, can it be the circulator? I also noticed that the PSI was slightly above 0 (on cold with all thermostats off), so I added more water into the system until the PSI read 15 to 18. I have water baseboard heating and I can hear some water sounds on the second floor, but struggling, if that makes any sense. What I haven't done and was thinking about is releasing all the water from the furnace and filling it back up. Is that a safe idea? Please, any help is appreciated!
* I am so sorry, this was posted in the oil heating category. This is a natural gas furnace/heater.