Posted: 5/14/2017 3:31:34 AM EDT
| So we just moved into our new home a couple of months ago. There is a Trane AC unit that was installed in the summer of 2015 along with a Trane furnace. When the AC kicks on, the outside unit buzzes etc but the big blower fan on top doesn't kick on. The furnace blower fan runs and the air is cold. After about a minute the AC fan outside kicks on and runs. Is this normal? Our old Lennox never ran like that. |
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Quoted:
So we just moved into our new home a couple of months ago. There is a Trane AC unit that was installed in the summer of 2015 along with a Trane furnace. When the AC kicks on, the outside unit buzzes etc but the big blower fan on top doesn't kick on. The furnace blower fan runs and the air is cold. After about a minute the AC fan outside kicks on and runs. Is this normal? Our old Lennox never ran like that. |
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Could be normal operation to save energy. It has sensors that detect pressure and it's waiting for the pressure of the refrigerant to get to a certain point before it kicks on the condenser fan.
Now if it doesn't do this every time you may have an issue. I'd look at the capacitor or the contactor if that's the case. |
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Quoted:
Not familiar with it but buzzing from a motor usually isn't a good thing. But because it does start after a minute or so every time I'd lean towards normal. |
