Hi, I installed my York system 2 years ago July 2011 and this month I found ice on my coils, I have 3.5 ton system with new refrigerant line about 35 ft long. the system came already charged with 4.4 pound of refrigerant which support 15 ft line . the guy who installed it did not add any refrigerant for the extra 20 ft pipe. One HVAC person came to my house and added 3.11 pounds of refrigerant to the system and checked leaks and did not find any by the joints. then said he could do the deal which will cost about $700 dollar, the system still under the warranty, I thought to buy the cliplight Dry R and 937 kit super seal for my 410a system, questions is how good is cliplight and do you recommend it. or do you have any other advice. Thanks

Views: 659

Reply to This

Replies to This Discussion

   I have heard of York having some problems with leaking coils(along with almost all brands). Super seal could be used if this is the case and you have micro leaks, but this would be a band aid approach. If your system is still in warranty I would consider fixing the root problem which has yet to be determined. Sounds like the installer did not properly commission the system. Not knowing if there was a proper vacuum performed at installation, I would recommend the following work performed. Reclaim existing 410a refrigerant and replace/add refrigerant filter drier. Then perform a leak test using dry nitrogen. If there is a leak, fix or replace leaking component.  Once leak is found and fixed perform a proper vacuum to at least 500 microns. Add new 410a refrigerant and subcool or superheat depending on the metering device. Do not reuse existing refrigerant, which could be contaminated with moisture or air, or could have separated one of the mixed refrigerants. Make sure the technician verifies airflow across the evaporator coils before the final refrigerant charge. You will probably be amazed at how well your system will performed compared to before. Good luck!

all refrigerant systems leak.  all roofs leak.  all windows leak. All doors leak.   I use a lot of sealant  and clip light is better of all of them and if need be you can blow out all the "bubble gum"  with flush and dry nitrogen then put a vack  to under 500 Microns but over 200 microns so the oil in compress stays in system.   All the sealant I use works on very small holes and when hits air turns to gum so if the system is "wet"  then the whole thing seals up.  Most hacks do not use vack pumps just "flush the line" and open the valves then moisture just rots inside and     with R-410A  the oil expands with H2O  then the filter dryer fill up then beads get large then screen fills then beads get in to the meter/ cap tube, Then high presser 800 PSIG  then shuts down the compressor.    I have been to whole subdivision with plugged meters TXV's and Rev valves   

You may be focusing on the wrong culprit.  Ice forming on your coils could be caused by too little air flowing over the coil or an over-sized air conditioner.  The evaporator coils on my 3.5 ton AC frequently iced up before the outside compressor failed.  When I replaced the outside condenser and compressor with a 3 ton unit, the ice on the AC coil went away, comfort improved and my bills went down.

RSS

Videos

  • Add Videos
  • View All

Twitter

Latest Activity

George Matthews commented on George Matthews's event Proof is Possible Tour by the Home Performance Workshop
"Here is the flyer for the Advanced Techniques and Tools in Home Performance Friday October 7th at…"
2 hours ago
George Matthews posted an event

Proof is Possible Tour by the Home Performance Workshop at Truitt and White Lumber Conference Room

October 7, 2016 from 9am to 1pm
Building Energy Performance Testing is sponsoring the Proof is Possible Tour to come to the San…See More
2 hours ago
George Matthews replied to George Matthews's discussion Shortridge 8400 Flowhood for A/C airflow testing in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Here are the pics of the flowhood and airdata manometer"
Saturday
Sarah Holloway posted a photo
Friday
Joe Urycki added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

TEC blower door and UEI combustion analyzer for sale

For sale is one used TEC Minneapolis blower door system: Includes model 3 fan with rings A and B,…See More
Friday
John Nicholas replied to Kevin Emerson's discussion Studies re: radon mitigation and energy efficiency
"The Nay side is well represented with the links already posted. I presented a neutral side, with…"
Friday
Ray Lehman replied to Kevin Emerson's discussion Studies re: radon mitigation and energy efficiency
"Hey John, Thanks for the information.  Very good empirical data. While I agree that running…"
Friday
John Nicholas replied to Kevin Emerson's discussion Studies re: radon mitigation and energy efficiency
"I have no links, just some anecdotal evidence. I had several Blower Door Tests done on my own home.…"
Friday

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service