2 yr old 3.5 ton goodman wont cool enough.
#1
08-03-14, 05:01 PM
2 yr old 3.5 ton goodman wont cool enough.
I'm in Florida, and my outside air is 91 F, humidity is 100%, the discharge air from the goodman compressor is 111.5 f, the small line registers 103 degrees, the large line is reading 80 degrees, these are with an infrared therm at the compressor.
An a/c thermometer stuck in the plenum registers 67 F, the air temp at the intake filter ( which is 1 wk old) registers 80 F. Thermostat is set on 72F and the temp is 78 F. Humidity is 43% and its 7:30 pm. My house is always warm, this unit is 2 yrs old last month. We don't remember it being like this before the new unit which uses 410a.
BTW, I can hold the small line at the handler in my hand for a count of 10 Plus.
Any ideas?
An a/c thermometer stuck in the plenum registers 67 F, the air temp at the intake filter ( which is 1 wk old) registers 80 F. Thermostat is set on 72F and the temp is 78 F. Humidity is 43% and its 7:30 pm. My house is always warm, this unit is 2 yrs old last month. We don't remember it being like this before the new unit which uses 410a.
BTW, I can hold the small line at the handler in my hand for a count of 10 Plus.
Any ideas?
#2
08-03-14, 06:02 PM
Forum Topic Moderator
If the furnace is in an attic I would measure the intake temperature up there as well. If the air is much higher entering the furnace than it is entering the filter grill this could indicate a return air leak.
If it cooled fine last year it is probably low on refrigerant indicating that you have a leak somewhere.
We do not explain charging procedures on this site but if you see oil on any connections it could be in indication of a leak. Pull back the pipe insulation near the outdoor and indoor unit and feel for oil.
If it cooled fine last year it is probably low on refrigerant indicating that you have a leak somewhere.
We do not explain charging procedures on this site but if you see oil on any connections it could be in indication of a leak. Pull back the pipe insulation near the outdoor and indoor unit and feel for oil.
#3
08-03-14, 07:01 PM
the unit is on the ground floor, refrig checks out ok per a/c tech. plenum time is 67 f, and intake on the other side of the same wall is 80 f. I've had two techs looking at it, both say its because of the 410 coolant. Not as good as the old stuff
#5
08-03-14, 09:24 PM
Forum Topic Moderator
I agree with Clocert. R410a can cool just as well as R22.
You need another tech. A 13 degree drop across the coil is not acceptable.
You need another tech. A 13 degree drop across the coil is not acceptable.
