My Window AC Unit Has Stopped Working How Do I Fix This? Question: Recently I unplugged my window mounted air conditioning (A/C) unit as it was running to relocate it. I was not able to relocate it at that time so I plugged it back in and now it will not turn on. It will not blow cold air at all, in fact it won’t do anything, it will NOT turn back on. What may have happened? Did I break something by unplugging it while it was running? Please help as it is getting really hot in here!!!Answer: The most probable cause of your AC unit not turning back on is the compressor needs to cool down. (See picture below to see what the compressor looks like and where it is located.) Since you unplugged the unit as it was running, it will not start back up right away as it needs a “cool down period”. There may also be a time delay built into your ac unit to protect itself. It is also possible that by unplugging it while it was working, that you may have tripped a breaker. Go to the fuse/circuit box and check to be sure that nothing has tripped.

If a circuit has tripped, go ahead and reset it to turn power back on. If the circuit was tripped and you flipped it back on and the AC still will not turn back on, then give it time to either cool down or let the time delay play out. Check to be sure that your ac unit is not plugged into a GFCI outlet or possibly there is a GFCI reset on the power plug itself. Make sure nothing has reset. If the AC still won’t turn back on, simply have patience and give it the time it needs to start back up. If the above fixes do not work, there may be more to it then a time delay or tripped breaker. Have a look at the AC parts diagram below. If your window AC is now working properly, here is the best way to clean it out to maintain maximum efficiency.Have any other tips to fix a window mounted AC? Please Share Our Helpful DIY Information Previous post: Water Heater Making Noise? Here Is What To Check Yourself!Next post: What To Do If A Room Is Hotter Than The Rest Of Your House In The Summer said by Mhenry843 :Got a LG 12,000 BTU it's about 2 years old but was only used for a few months up until now.

The problem is the compressor kicks on but the air is exactly the same temperature as when the compressor is off it gets no colder at all. I cleaned all the dust out of it haven't cleaned the coils yet because they don't seem dirty at all. I'm no expert in this area so if someone can point me in any direction that may lead me to the problem, that would be great. it sure sounds like the AC was dropped, and leaked out all the Freon, or it may have gotten bumped.. if the compressor is running, and the evaporator(the coil under the filter in the front) is not getting cold, then the Freon is gone..Please help with possessed AC unit! May 25, 2012   Subscribe I have a Haier window AC unit. Looking for some technical help. My window unit's control panel has gone crazy. None of the input buttons do what they are labeled as. The unit has had this problem for several summers, but this year it has gotten worse. The buttons seem linked to random functions (sometimes 'mode' changes speed, 'timer' changes the mode, etc).