AC freezing up from being set too low?

[Wrench97]

I'll blow out the trap and see what happens. I blew out the other drain further down, but I guess I need to blow out that goose neck thing too. I saw water flowing in the pipe after that so I thought it was fixed, but I guess not.

Do you see water coming out the end of the pipe outside the house?

 

[FMB4]

I had the ac set to 71 and according to my fieldpiece temp meter it was keeping the shop at 69.5-70.0 degrees the entire time. The ac pretty much ran the entire time while it was 95 outside.

You are over-running your AC unit. Trying to keep your shop at ~ 70 when the ambient temps are 95 is not a good idea. Trying setting your thermostat to no lower than 78-80 degrees F. Note: your AC unit should never run "pretty much the entire time".

 

[Hobby_Man22]

Why is that?

 

[Hobby_Man22]

I assure you people do it all the time in the south.

 

[Hobby_Man22]

It only runs non stop in the heat of the day for 3hrs like I said earlier.

 

[u3b3rg33k]

You are over-running your AC unit. Trying to keep your shop at ~ 70 when the ambient temps are 95 is not a good idea. Trying setting your thermostat to no lower than 78-80 degrees F. Note: your AC unit should never run "pretty much the entire time".

Mine's run almost 400 hours this month. guess I better turn it off n suffer instead!

 

[Hobby_Man22]

Once you start moving around and working on something 70 isn't all that cool anymore. I didn't pay $8K so I could sweat. Might as well shut it off and open the doors up.

 

[LS6 Tommy]

You are over-running your AC unit. Trying to keep your shop at ~ 70 when the ambient temps are 95 is not a good idea. Trying setting your thermostat to no lower than 78-80 degrees F. Note: your AC unit should never run "pretty much the entire time".

There is absolutely no reason to change the setpoint just because it's hot out.

Tommy

 

[Hobby_Man22]

Turned it on the other day set at 76 and the pan was dry the whole time.

 

[metlmunchr]

The auxiliary drain pan should remain dry at all times regardless of the temp setpoint. If it doesn't, something is wrong with the primary drain line.

 

[Hobby_Man22]

The auxiliary drain pan should remain dry at all times regardless of the temp setpoint. If it doesn't, something is wrong with the primary drain line.

It's still filling up. I blew out the trap this time. Am I supposed to be blowing air into the air handler too? I had an hvac guy tell me the trap is where it clogs 90 percent of the time, but I can still see water flowing, so it's not clogged.

 

[Wrench97]

Where do you see the water coming from that is in the pan, it may be a cracked condensate pan in the unit itself.

 

[Hobby_Man22]

Where do you see the water coming from that is in the pan, it may be a cracked condensate pan in the unit itself.

It's slowly dripping out of the bottom through the tape where the evaporator core is I believe. Like the last 4 inches from the edge of the unit. what are the chances of a cracked internal pan on something not even a year old?

 

[Hobby_Man22]

Do you see water coming out the end of the pipe outside the house?

Yes it is. It's supposed to in this case. Usually it drains into a sink drain, but was plummed outside the building since it's a shop.

 

[Wrench97]

It's slowly dripping out of the bottom through the tape where the evaporator core is I believe. Like the last 4 inches from the edge of the unit. what are the chances of a cracked internal pan on something not even a year old?

If the drain pipe is clear and it's dripping chances are pretty good.

 

[u3b3rg33k]

Maybe the installer dropped the coil when they went to put it in?

 

[Hobby_Man22]

Sure took a while for it to show.

 

[Wrench97]

Is the unit a heater also?
I've seen them melt.

 

[Terry D]

You have a few choices, either call back who ever installed it. Call someone else to fix it or fix it yourself. Water should not be dripping in that safety pan under normal conditions. You will have to remove the covers and see what is going on. If your drain is not restricted, then I would look for a cracked pan, the pan not being installed correctly or possibly the wrong pan. We can not help fix this without pictures. To much airflow will also create problems

 

[Hobby_Man22]

I'll have to take some pics. Now that I'm thinking about it the part it's dripping from isn't the actual unit itself, but just the ductwork. It was some insulated aluminum box that they made and attached to the air handler that extended it out about 2 more feet.

 

[Terry D]

This whole time the water in the pan is from your duct sweating

 

[Hobby_Man22]

I can't remember if that part is insulated or not. I know the spiral ductwork is insulation. I just remember them folding it up to make it into a box that the spiral ductwork connects too.

 

[Hobby_Man22]

This whole time the water in the pan is from your duct sweating

So you're saying it's fine?

 

[Terry D]

So you're saying it's fine?

It would really help if you would post pictures. Is the air handler in a conditioned space.

 

[Worsedog]

At work we installed a confiscated 5 ton in the horizontal configuration. It's first run was a disaster. Water leaked out of the fan access cover and if it ran long enough it would fill the cabinet and then the conduit for the power, it actually started to run out of the subpanel that powered it. We made a plexiglass cover so we could see inside it while it was running. You could see it sucking the water right off the evaporator. Some went all the way into the blower housing, but most of it fell into the bottom of the cabinet. We ended up running the fan one speed lower and that kept the water in the condensate tray rather than the airflow.

 

[Hobby_Man22]

It would really help if you would post pictures. Is the air handler in a conditioned space.

Yes

 

[Hobby_Man22]

It's a slow drip out of the bottom where the tape is.

 

[Hobby_Man22]

That's the pan it's leaking into

 

[Worsedog]

That's the pan it's leaking into

See my post above, and also the others mentioning the condensate tray possibilities as well. If that tray is getting wet there is definitely problem in the box. As you said it is still cooling and seems to have good airflow, it's probably not freezing up.

 

[Terry D]

Can you post a picture of the whole unit. So we can see how it is installed. That picture is not showing much. Take a few pictures. We are trying to diagnose this over the internet

 

[Hobby_Man22]

yeah. It's a goodman horizontal unit

 

[Terry D]

We cant help with out pictures.

 

[Hobby_Man22]

Here's a few more.

 

[Hobby_Man22]

Here's what's in the pan. Hardly that deep at all. Btw the unit shut off when I was up there taking pics and a good amount of water started a steady drip in like three different places out the bottom and into the pan pictured. I don't think it's a cracked internal pan. Probably just clogged inside.

 

[Hobby_Man22]

Here's what's in the pan. Hardly that deep at all. Btw the unit shut off when I was up there taking pics and a good amount of water started a steady drip in like three different places out the bottom and into the pan pictured. I don't think it's a cracked internal pan. Probably just clogged

 

[Wrench97]

Is the unit level?

 

[Hobby_Man22]

Why do they tape up those panels?

 

[Hobby_Man22]

Is the unit level?

They angled it slightly towards the drain you see.

 

[Hobby_Man22]

The water leaks out for about 10 seconds after shutdown.

 

[Terry D]

So it looks like the water is leaking out of the supply end of your air handler. Not the return end. The evaporator is at the retutn end where the drains are at. The pan in also in there under the evaporator. If it is pulling water all the way through the air handler and accumulating in the supply plenum. You need to have the installer out and check the cfm. To much air flow will pull the water off the coil. If it was a pan issue, it would be leaking at the other end