Jump to content

Ice buildup, why...


Recommended Posts

Chris is dead on. The most common cause (90% chance) is a blown collant load. There is little to no coolant remaining in the system. Recommend to the buyer that he has the system checked immediatly.

Better yet, if the seller or seller's agent is around, recommend thay have the system checked today . Running the system under these conditions can damage it. They are also really running up their electrical bill. Assumiong closing is a month or so out, it will benifit the seller to handle it ASAP. That saves your buyer $s also. The seller can show the buyer a paid invoice from a licensed technician and all is well.

Glenn

Link to post
Share on other sites

It is very bad to run a unit in this condition. Air cannot circulate thru the coils, so it is forced thru every nook and crannies into the hot attic spaces. It condenses in the hot attic area. It will need to be resealed. It is also bad for the compressor. Low refrigerant is the #1 cause, but can be caused by other things. Low refrigerant indications usually are seen with the evaporator coils freezing up. You usually don’t see it backed up to the compressor as in your picture that often. It could also be caused by a bad compressor, high refrigerant levels, too small an orifice or expansion valve problem , coils clogged, or air leaks in the air return.

In your picture, the ice seems to be starting at the expansion valve. So that could be it. Looks like a York Unit.

Link to post
Share on other sites

I've never heard of screw compressors on AC units. I'm familiar with scroll and piston types for AC and I had a screw compressor in my shop so I guesss I'm pretty familiar with the Roots style as well, I just haven't seen them used with AC. What brands are using them?

Link to post
Share on other sites
  • 3 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...