Major_golf Posted May 7, 2012 Report Share Posted May 7, 2012 What causes the lines to freeze and not produce cold air Quote Link to comment Share on other sites More sharing options...
wnaplay1647545503 Posted May 7, 2012 Report Share Posted May 7, 2012 LAst year mine did it due to a clogged filter. It appeared clean and wasnt that old. I completely thawed it out and it worked luckily. My dads just did the same this week but his was low on coolant. Quote Link to comment Share on other sites More sharing options...
MattKatz Posted May 7, 2012 Report Share Posted May 7, 2012 Plugged filter, dirty blower( indoor), low charge, bad expansion valve, dirty indoor coil. That's about it. Quote Link to comment Share on other sites More sharing options...
Major_golf Posted May 7, 2012 Author Report Share Posted May 7, 2012 Filter looks clean can't see the A coils it's got about a inch of ice all over it. How would I check the freon level Quote Link to comment Share on other sites More sharing options...
wnaplay1647545503 Posted May 7, 2012 Report Share Posted May 7, 2012 Need a gauge set. Quote Link to comment Share on other sites More sharing options...
Major_golf Posted May 7, 2012 Author Report Share Posted May 7, 2012 Going to call the pros to fix this one Quote Link to comment Share on other sites More sharing options...
nurkvinny Posted May 7, 2012 Report Share Posted May 7, 2012 Gonna bet low charge. Quote Link to comment Share on other sites More sharing options...
Green Bastard Posted May 8, 2012 Report Share Posted May 8, 2012 let the coil thaw, take a good look at the evap coil and see if there is any embedded dirt, a dirty coil could cause it to freeze. the 2 main causes of a coil freezing is lack of air flow and low freeon, but usually when the freeon is too low it would trip a low pressure switch and the compressor wouldnt come on. i would bet on lack of air flow. Quote Link to comment Share on other sites More sharing options...
MattKatz Posted May 8, 2012 Report Share Posted May 8, 2012 Home units if older typically dont have low pressure cut outs....Bastards will run forever. If I was local Id do you a Very reasonable service call, but Im not, good luck man. Definately shut off the AC leave the blower indoor on to help thaw out coil. Nothing can be done until thats thawed completely. Quote Link to comment Share on other sites More sharing options...
wnaplay1647545503 Posted May 8, 2012 Report Share Posted May 8, 2012 I carefully used a blow dryer and small heater to thaw out quicker, you do have to be carefull doing this method. Quote Link to comment Share on other sites More sharing options...
MattKatz Posted May 8, 2012 Report Share Posted May 8, 2012 No point rushing a thaw....Im sure hes not requesting Emergency service at 9 pm at night. Itll be thawed by morning. Quote Link to comment Share on other sites More sharing options...
wnaplay1647545503 Posted May 8, 2012 Report Share Posted May 8, 2012 Last year hottest day of the year and I believe the weekend. I was desperate for a fast thaw, lol. Quote Link to comment Share on other sites More sharing options...
MattKatz Posted May 8, 2012 Report Share Posted May 8, 2012 I can understand at Certain times...This is the best time to have a failure so everything can be looked over and hopefully he'll be good to go for the season. Quote Link to comment Share on other sites More sharing options...
Miller Posted May 8, 2012 Report Share Posted May 8, 2012 It can also just happen from the lack of use and orientation of your setup. You don't happen to have a roof mounted ac unit do you? Quote Link to comment Share on other sites More sharing options...
Major_golf Posted May 8, 2012 Author Report Share Posted May 8, 2012 No roof mount I let it thaw over night turned it back on this morning and it refroze in about 10 min Quote Link to comment Share on other sites More sharing options...
gaewsky1 Posted May 8, 2012 Report Share Posted May 8, 2012 Mine did the same thing about 3 yrs ago and it was a low charge. They came by and filled it up and it has worked fine since. No ice on pipes anymore. Quote Link to comment Share on other sites More sharing options...
MattKatz Posted May 8, 2012 Report Share Posted May 8, 2012 And you thought thawing would solve the problem? It didn't ice up as a fluke. Quote Link to comment Share on other sites More sharing options...
MattKatz Posted May 8, 2012 Report Share Posted May 8, 2012 It can also just happen from the lack of use and orientation of your setup. You don't happen to have a roof mounted ac unit do you? 100% incorrect. Regardless of where this sits or how often it's used, it doesn't cause frosting or freezing. No if, ands, or buts about it. Quote Link to comment Share on other sites More sharing options...
Miller Posted May 8, 2012 Report Share Posted May 8, 2012 64% correct 100% of the time I'll insert the "but" here Rooftop ac's are prone to more issues they are exposed to more than a typical ground unit. A lot of times the lineset for those units is made too long and causes vibrations that = premature failure and can effect both the lines or the coil, especially if it's outdated. Quote Link to comment Share on other sites More sharing options...
Green Bastard Posted May 9, 2012 Report Share Posted May 9, 2012 do you rent or own? I just thought about it, if your renting the landlord has to fix it. fwiw though, I didn't know older units didn't have a LP switch, the last time I was low on freeon, the compressor wouldn't come on. Quote Link to comment Share on other sites More sharing options...
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