compressor is running and humming. Yesterday I pulled off the top and hosed off the coils/fins, did not seem that dirty. Pressure I am not sure, tech said "within range". It is running 420 freon. So when it randomly quits BOTH the fan and the compressor shut off, no noises. seems time happen about the same time of day 3 or 4pm. We can leave it off for 1-2 hours and then the unit will start working again. this makes me think the compressor is overheating and tripping a switch. I installed new filters today, they were a little dirty. As of now AC is working and holding temp. Today's forecast 112 =)
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- Thread starter nxhappy
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Yeah, its been hot even by Phoenix standards this week. If both fan and compressor kick off, could be a fault between the control unit and T-stat. Would be nice to watch the pressures operation and observe it when it kicks off. Could also be debris in the system clogging the orifice.
Keep the faith good sir, in 2 months it will be paradise here.
Yep electric. To clarify, 14k for one system. We have a dual zone. 3.5 ton each.
its been running about an hour now, cold air and keeping temp. maybe the coils just needed a hose down.
side note- maybe the T stat is bad ? It does click on but it's probably 10 years old. New T stat is $50
side note- maybe the T stat is bad ? It does click on but it's probably 10 years old. New T stat is $50
Thermostats don’t go bad too often, assuming it’s a simple Honeywell or something. Just make sure the batteries are fresh in it.
yes, already have fresh batteries.
So, if it’s doing it at around the same time of day, 3 or 4 pm, that would tell me high pressure is shutting down the unit. Is the A coil clean as well? Also, if your shutting it down, then restarting, I would assume the outside air temp has dropped, which in return would also drop pressures. Also, when you’re spraying the condenser, you are also dropping the pressures tremendously. Just in case you didn’t know. That’s a cheat that I’ve seen done for a very short term solution when in a pinch because the condenser coil can calcify from doing this.
If I were you, I would invest in a good meter to test your stat, capacitors and such. I could give you a quick crash course on how to do all this. Just make sure to buy a decent meter. You can save yourself bit money down the road.
I would also, if this is still happening and if you were to decide to call a service tech again, make sure to have them out at the heat of the day. As I’ve said before , as outside temps rise, so does your pressures. Pressure increases, so does your temperature.
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If I were you, I would invest in a good meter to test your stat, capacitors and such. I could give you a quick crash course on how to do all this. Just make sure to buy a decent meter. You can save yourself bit money down the road.
I would also, if this is still happening and if you were to decide to call a service tech again, make sure to have them out at the heat of the day. As I’ve said before , as outside temps rise, so does your pressures. Pressure increases, so does your temperature.
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I may also be able to tell you where to test voltages if you sent me a photo of your schematic on your outside unit. I would assume, if it was your thermostat, that your blower would quit running along with your ac unit.
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I do have a good working meter for volts and ohms. I cleaned the outside unit. What is the "A coil" ??
when the outside unit quits the air is still blowing from the vents....not cold obviously
Well, then what we could do is open up the outside unit, snap some photos of the schematic and post it up. Then, you could check for voltage on the compressor contractor when the compressor is off to see if it is being interrupted and where it is being interrupted.
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Is there not a schematic on an access panel on the unit ? Do you have any documentation that may have a schematic?
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Ewww.... R-22. That’s no good. Hope you don’t develop any leaks on that system. That stuff is getting outrageous and soon to be hard to come by thanks to the EPA.
Might want to think about updating sometime in the near future.
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Might want to think about updating sometime in the near future.
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it has 420 in it
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