We have a 5 year old Breezaire WKS4000 split system in our wine cellar. It has worked flawlessly since it was installed. Recently the evaporator coils started icing up. We noticed the problem because the cellar was no longer at 55 degrees and water was running down the wall.
We removed the cover from the evaporator unit and allowed it to thaw. The coils were already quite clean but we cleaned them thoroughly anyway. There were no signs of any problems inside the unit. The fan was working properly. There was good air flow into the coils and out the top. The drain was clear. Even on the warmest setting, the coils iced up. Is there anything else we can check before having the tech in to take a look. We'd like to make sure we've done all the basic user procedures to avoid any embarrassment. Thx. Tom