Air conditioner runs all the time but temp still goes up
Just sarted doing this even had the coils cleaned service man thought that would take care of the problem but is has not. I checked the little pipe it is warn but not hot and the bigger one is cold. I have made sure all of my filters are clean. I hope you can give me some advise in this matter.
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You can in most cases repair this slow speed stall or unstable idle by cleaning the engine throttle valve and the idle speed control valve using a product called CRC Spray Throttle valve cleaner. Spray the cleaner into the air intake of the engine with the hose removed from the throttle body, the engine will try to stall so hold up the idle speed manually. Once you have used up about 1/2 can of the cleaner stall the engine out while spraying and turn the key off, disconnect the negative battery cable for 5 minutes and then reconnect and drive the car for a about 25 miles of varied driving modes. If this doesn't cure the problem you may need the fuel injectors professionally cleaned by the dealer service dept.
couple thoughts hee. 1. If you allowed the filter to get really dirt you might well have a "blanket" on the evaperator coil that is not allowing enough air to move over the coil. 2. Low on charge. 3 the compressor is getting ready to give up the ghost.. Bad valves? Check and see in the afternnons if the suction line at the compressor is wet or cold. be careful when touching these lines as the discharge is HOT... But my guess is low charge... Bad compressor..
A/C units are all designed for a 20 temp drop and a normal temp. setting is no lower than 72 degrees or the indoor coil will freeze, and this is if everthing is perfect. If the filter is dirty either coils are dirty and I mean clean enough eat off of. The coils have to breath or flow enough to pick up and reject the heat, you should be able to see thru the fins unless the are very tight. Out door coils use a garden hose and nozzle and use as much force as possible and be very methodical, both coils are air filters and get dirty, the indoor coil use a pump up sprayer or a spray bottle, if the coil is over the furnace watch the water so it wont run into it. There could be something going on but if you were to call a service man in he would charge you for this, and them proceed with his service. If the coils are clean you must be using a good filter indoors, or its dirty, clean the coils and use a good pleated filter and keep the coil clean. Hope this helps.
If you are running A.C.,and the T-stat is set at 65,and the room temp is 74,the A.C. will run until the temp goes down to about 65 or so.Turn T-stat to 76 and the unit should shut down. Also,check furnace filter for dirt, and check condensor unit coils and see if they are dirty.If condensor coil is dirty it cannot breathe properly. That will cause the compressor, and the blower motor to overheat.Wash cond. coil down with water hose to clean .Start at top of coil and go sideways,slowly going down.
It freezes because of a lack of air flow ... and/or ... colmplicating ... high demand with high humidity.
Even worse is running the roof top with the door open in the summer (I see this all the time in the RV park where I work - I'm not saying you are doing this - but I see it all the time. What the heck, the typical transient camper is not paying for the electricity - let it run!)
If the intake vents are occluded in anyway or debris surrounds the coils this will cause the internal temp to rise to critical and trip the power. Unless you are skilled and agile and have a knowledge of how to open the unit I would be saying get a professional to look at it in case it goes further than thye basic problem as a result of overheating several times.
The last thinhg you need is no A/C in hot periods and a few hours shopping whilst it is being looked at by an A/C tech is well worth the visit before it costs more by not diagnosing another problem early
Wash out outside coil from time to time.This is the most over looked part of window units. Take care not to spray water directly into fan motor. If not real humid in house check temp coming out of ac inside and make sure filter and coil are clean. run on high speed and the air should have good force. 20 to 30 degree temp drop of room temp should be about right. Much depend on outside temp and humidity and indoor humidity plus insulation factor of area. How many people are in the area and if you keep unit on day and night .