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Started By
Message
A/c compressor has gone out 3 times
Posted on 9/3/24 at 7:56 am
Posted on 9/3/24 at 7:56 am
Since I’ve moved into a new house. It’s under warranty so they’ve replaced it. It’s two units. The upstairs has gone out once and the downstairs has now gone out twice. Each time I lose power and when I get power back the compressor goes out. I’m thinking about getting an electrician to come take a look at everything to see if he can pinpoint an issue. Any suggestions?
2
Posted on 9/3/24 at 8:14 am to lsuson
I always try to get to mine and turn them off when the lights go out. If not they may start again right away causing high head pressure.
Did the power go out ot the whole house? Are you having anyother electrical issues? A surge supressor may be a consideration.
Did the power go out ot the whole house? Are you having anyother electrical issues? A surge supressor may be a consideration.
Posted on 9/3/24 at 8:37 am to ItzMe1972
Whole house went out. It happened at 2am when I was sleeping. Apparently it overheats once the power is restored. I don’t have a surge suppressor for the whole house yet but I will soon
Posted on 9/3/24 at 8:49 am to lsuson
just went through this Sunday when another idiot hit another pole and knocked power out. When power came back on everything worked except for the AC. Turned out to be a tripped breaker on the air handler. i knew enough to check the outside breaker go through the turn unit off, reset breaker, wait 30 min and turn unit on. No luck.
$600 later we had the breaker on the air handler replaced. something i MAY have been able to handle myself but, it's not something i'm really comfortable doing.
So, i guess, check that breaker on yours and see if it's tripped?
$600 later we had the breaker on the air handler replaced. something i MAY have been able to handle myself but, it's not something i'm really comfortable doing.
So, i guess, check that breaker on yours and see if it's tripped?
Posted on 9/3/24 at 8:52 am to ItzMe1972
quote:
I always try to get to mine and turn them off when the lights go out. If not they may start again right away causing high head pressure.
This is my thought but still excessive. Are they VS or single/2 speed?
Some smart/battery thermostats like nest can detect this and help a little but probably not 100%
Posted on 9/3/24 at 9:03 am to MorbidTheClown
Breaker isn’t tripped
Posted on 9/3/24 at 9:07 am to lsuson
quote:
Breaker isn’t tripped
just thought i'd suggest it since i just went through it.
Posted on 9/3/24 at 9:13 am to MorbidTheClown
Yeah man appreciate it.
Posted on 9/3/24 at 12:12 pm to MorbidTheClown
So come to find out it’s not the compressor. The unit is frozen up. It’s defrosting. I either have a leak in the line or a leak in the evaporator coil. It’s a brand new unit. Pissing me off
Posted on 9/3/24 at 1:55 pm to lsuson
I've got a leak I've been living with for years.
About 3 or 4 times a year mine freezes up. I just turn it off, go outside and hose all the ice off. Wait a bit, and fire it back up.
About once I year they have to come put some more freon in.
About 3 or 4 times a year mine freezes up. I just turn it off, go outside and hose all the ice off. Wait a bit, and fire it back up.
About once I year they have to come put some more freon in.
Posted on 9/3/24 at 2:52 pm to ROUSTER
On that new of a unit, get another service co out to check and fix it. Companies love to make good first impressions and other outfits look bad.
If you have repeated power issues. If your thermostat doesn't have a time delay built in, either get a model that does or a dedicated time delay on the outdoor unit. Short cycle starting is rough on motor windings.
If you have repeated power issues. If your thermostat doesn't have a time delay built in, either get a model that does or a dedicated time delay on the outdoor unit. Short cycle starting is rough on motor windings.
Posted on 9/3/24 at 6:14 pm to Wraytex
I’m going to do that advice on the thermostat. Doubt the ones I have do that but I’ll check just in case. So the a/c guy came out today and said there no leaks and Freon levels are good. I’m having a hard time believing that. I’m going to get a second opinion
Posted on 9/3/24 at 6:25 pm to lsuson
quote:
So the a/c guy came out today and said there no leaks and Freon levels are good. I’m having a hard time believing that. I’m going to get a second opinion
So if the refrigerant levels were good & there were no leaks in line set or evap coil what reason did he give you for the unit freezing up? None I guess. If this is a larger company you either need to ask for a senior tech, or hire another company. Is this system less than a year old? If so, you should have at least a 1 year labor warranty on the system.
Posted on 9/3/24 at 7:57 pm to lsuson
AC filter clean?
Has it frozen up before?
Has it frozen up before?
Posted on 9/3/24 at 8:30 pm to CrawDude
Yes it’s under warranty and I’m getting an independent company come in to do a thorough inspection. What if the independent comes up with some things wrong and the installer denies that issue? Court?
Posted on 9/3/24 at 8:42 pm to ItzMe1972
Yea clean and never before
Posted on 9/3/24 at 9:12 pm to Wraytex
quote:
If you have repeated power issues. If your thermostat doesn't have a time delay built in, either get a model that does or a dedicated time delay on the outdoor unit. Short cycle starting is rough on motor windings.
+1. Most smart thermostats have brownout protection and will delay restarting of the compressor on split second outages. You can also get a contractor with built-in brownout protection like an Emerson Sureswitch:
LINK
Posted on 9/3/24 at 9:31 pm to bapple
How does the sureswitch work?
Posted on 9/4/24 at 5:47 am to lsuson
It is a solid-state contactor and replaces the contactor in your condensing unit. It has one small set of contacts that are sealed so you never have to worry about ants or any other bugs gumming it up. And a bonus is that the circuitry inside has brownout protection.
I have them on both my units at my house and they’ve been flawless for over 3 years. Also much quieter during startup compared to the slamming shut of a regular contactor.
I have them on both my units at my house and they’ve been flawless for over 3 years. Also much quieter during startup compared to the slamming shut of a regular contactor.
Posted on 9/4/24 at 8:21 am to bapple
quote:
It is a solid-state contactor and replaces the contactor in your condensing unit. It has one small set of contacts that are sealed so you never have to worry about ants or any other bugs gumming it up. And a bonus is that the circuitry inside has brownout protection. I have them on both my units at my house and they’ve been flawless for over 3 years. Also much quieter during startup compared to the slamming shut of a regular contactor.
bapple - I recently ordered an Emerson Sure Switch contactor to replace my “traditional” magnetic contactor but haven’t haven’t installed it yet, but will do when my Micro-Air soft start arrives. My Micro-Air soft start failed this past Friday - a month after install and Micro-Air is sending me a replacement.
OP - as also stated just about all Smart Thermostats, even simple ones, will have brown out protection to prevent the compressor from short cycling. You also need to see if the condensing unit is getting 240 volts, 120 Volts at each leg of the contactor. Excessively high or low voltage can damage the compressor but that’s one of the first thing a competent HVAC tech should check. A surge protector was mentioned by others - I also have a whole house surge protector - but also have a separate surge protector on the condensing unit that was installed with my HVAC changeout 1.5 years ago. This was installed before I had the whole-house surge protector installed.
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