I have a 3 ton 14-SEER Weatherking Heat Pump that went through a heating and a cooling season with no problems. This winter it only puts out cool heat. The Freon been checked and it’s OK. When it is switch in cooling mode it cools fine. When it is on heating mode and it is putting out cool heat (80 degree air) the heat pump runs normal for 10 seconds then it makes a SHOOW noise (like air coming out of a tire) normal for 10 second then SHOOW and it keeps doing this as long as it is in heating mode, in cooling it don’t make the SHOOW noise. I was told by a Tech to change the T-stat and tighten the wiring. That didn’t help. To me it sounds like it as something to do with the reversing valve, but I don’t know what to do next. I just started messing with heat pumps a year ago. Out of 10 heat pumps that I have installed this is my first problem.
needs help in Ohio