I hadn't slept well the night before -- my air conditioner for reasons that escape me, continues to bang at about 1 am in the morning. It does it for about two or three hours, then seems to stop. Does it bang at any other time? No. I'm beginning to think there's a ghost inside it and it just comes awake in the middle of the night.
[ Open appliance-repair-tech-back-in-the-70s/80s mode ] :
Probably not of too much value this late in the cooling season, but what kind of banging noise is it making? I'm assuming from what you wrote that it's a continuing, rapid-fire noise, like bap-bap-bap-bap-bap-bap-bap, as if the fan blade is hitting something?
Because-- if so, it probably is. The reason it might start this in the middle of the night is that if the air conditioner's case is racked or twisted just a bit, and the interior clearances between the fan blade and the fan shroud are tight, temperature changes as it gets cooler at night would contract the parts and what wasn't touching, now is.
Fixing this would normally involve taking the unit out of the window, removing the case, and seeing if the above-described sitch is what's happening, but if you can do it without dropping the thing out the window, try twisting the case a bit, or take the AC out of the window and put it back in again in a slightly different position to see if that makes the noise go away.
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branchandroot
no subject
Date: 2016-09-06 09:56 am (UTC)[ Open appliance-repair-tech-back-in-the-70s/80s mode ] :
Probably not of too much value this late in the cooling season, but what kind of banging noise is it making? I'm assuming from what you wrote that it's a continuing, rapid-fire noise, like bap-bap-bap-bap-bap-bap-bap, as if the fan blade is hitting something?
Because-- if so, it probably is. The reason it might start this in the middle of the night is that if the air conditioner's case is racked or twisted just a bit, and the interior clearances between the fan blade and the fan shroud are tight, temperature changes as it gets cooler at night would contract the parts and what wasn't touching, now is.
Fixing this would normally involve taking the unit out of the window, removing the case, and seeing if the above-described sitch is what's happening, but if you can do it without dropping the thing out the window, try twisting the case a bit, or take the AC out of the window and put it back in again in a slightly different position to see if that makes the noise go away.
[ Close aging appliance tech mode ]
Hope this might help.