Our SRK40H-s1 keeps icing up,
Hi, if you are running this in cool when the icing occurs, there are several things that will cause this. #1, make sure the indoor fan is running up to full speed. #2, make sure that the indoor coil where the air comes in is clean and that the filter media is also clean and not clogged with dirt. The reason I asked if you were running it in cool when this happens is if this were a heat-pump and you were running it in heat, the ice would build up on the outdoor unit and you would have a defrost problem, so just forget that unless this is happening. If fan is running up to speed good and strong, the filter behind the cover on the indoor unit is clean and not clogged and the coil behind the indoor unit is clean, you will have a freon leak somewhere in the unit. Check what I have told you first. Use a ladder if you need to reach the indoor unit. Make sure all is clean and if the foam type filter is old and rotten, you can get some at a hardware store, like Home Depot, Ace Hardware, and so forth. If it continues to ice up, you do have a small freon leak and this will take a certified service tech to locate leak and recharge the system. Most leaks occur on these ductless splits at the freon lines where the lines screw together at the indoor coil to the outdoor unit. I have seen this happen many times as a A/C Refrigeration contractor. You do have a top of the line system I have to say, very little calls to make repairs on the Mitsubishi split system. Lets hope its just a coil or filter that is plugged up not letting air through the coil which will ice up the unit. Keep me posted and feel free to correct me if I was wrong about the way the unit is set up.Also, keep me posted on what you have found and if you have or have not solved the problem. Please get back to me.
on May 17, 2010