a/c line is hot...

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Old 06-23-10, 10:17 AM
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a/c line is hot...

my outside a/c line running to the compressor is hot and my unit is running more than normal plus is having trouble cooling the house. thanks for any help.
 
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Old 06-23-10, 10:21 AM
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The liquid line going to the house being hot is a sign of either a dirty outdoor unit coil or the outdoor fan not turning.

Turn off the breaker to the unit and wash the coil with a garden hose.
You may see black water running from the bottom of the coil when you first do it, a sign of a plugged coil.
 
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Old 06-25-10, 10:09 AM
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thanks, i'll give that a try.
 
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Old 06-26-10, 02:25 AM
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Being low on freon could also be a culprit, which would indicate a leak in the system.
 
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Old 07-07-10, 10:12 AM
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okay, i cleaned the outside coils but the line is still running too hot to the touch. besides low freon is there anything else i should check? also, the outside fan is working fine.
 
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Old 07-07-10, 04:19 PM
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How about your suction line (the big one) ?
 
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Old 07-08-10, 10:06 AM
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what should i be looking for on the suction line?
 
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Old 07-08-10, 10:42 AM
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Is the suction line cold/warm/hot ? or sweating ? and also, is the discharging air from your condenser hot ?
 

Last edited by clocert; 07-08-10 at 12:18 PM.
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Old 07-13-10, 03:04 PM
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suction line is sweating but it only feels cool not cold and yes the air being discharged is hot.
 
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Old 07-13-10, 04:55 PM
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Something is wrong here, if the discharge air is hot, the small line should not be that hot, if the small line is not cold, only cool, it should not have condensation (sweating) water. So when you touch it by hand, does it feel like ice water , or regular hose water ? Also you said the small line is hot, but how hot ? can you touch the line with you hand ? or just a little warm ? (I used to go over my neighbor's unit and touch the lines and compare. of couse you need to know their AC is in good condition, so you won't compare to a bad one). I am thinking that your big line may be not cold enough, and small line is a little too hot. All you need is to put a little more freon into the system(may be there is a small leak) . but In order to do that, you need to call an AC tech, once he is there, he can put the gauge on the system to find out more details. (another question, what is the temperature split inside house between cold vent air and return air? you want minimum 15 degrees)
 
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Old 07-13-10, 11:25 PM
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My previous post had a typo on the first line. should say if the big line is not cold (not the small line not cold). Sorry ...
 
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Old 07-14-10, 08:36 AM
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Originally Posted by mfrancle View Post
my outside a/c line running to the compressor is hot and my unit is running more than normal plus is having trouble cooling the house. thanks for any help.
If there is a cottonwood tree within blowing distance of the condenser, it could be plugged with that blowing cotton.

This is a typical problem...
 
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