AC keeps freezing up, i had a tech come out, he said i was just low on Freon,, so he charged it up, 2 days later AC froze up again, so the same tech came out and said he tighten some bolts and said that should do it, and if not i would need a new AC unit. 2 DAYS later ac froze up. so i turned it off. only to turn it on again once it was drefrosted, and know it doesnt get cold. any help out there, atleast something to put me in the right direction
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Re: AC wont get cold
How dirty is the filter(s), also is the weather quite humid?if so it may be trying to stay ahead of the humidity,,did the TECH check for a pressure drop while he was there? and did he vacuum it down and nitrogen it and start from scratch? if it leaked down that fast it should have shown on the gauges when he performed the initial gauge test and w/o vacuuming it down,it could have moisture in the system and moisture will inhibit cooling
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because the temp difference between the hi and low side will be greater faster than a normally charged system the reason it cycles off is the keep the evap. from freezing up, but running to low on Freon can cause poor lubrication in the compressor causing damage to the compressor, yes it will blow very cold for a short period of time with a low charge
if your ac is running but no air is comming out the vents first check your filters they should be changed in summer time every month winter every other month keep clean for better air flow and to keep your electric bill down if its not blowing cold air you are low on freon if no air is comming out at all turn it off that means it is froze up that usully happens when you turn the thermostat setting to low you really dont want to set below 75 because the compresser never will shut off and it will freez up.
You need good airflow across the indoor coil, the evaporator. Air warms the refrigerant. If there is no airflow, the refrigerant will come back out freezing cold (in liquid form) and can damage the compressor valves. Before charging any ac unit, good airflow must be checked for across both evaporator and condensor.
Too much, overcharging will cause freezing all the way back to the compressor in a capilary tube type of ac.
Where is it the refrigeration lines are freezing cold?
sounds like it is either low on Freon or the compressor is going out. The blowing ice cold is an indicator that it may be freezing up because the low Freon. when it stops blowing cold, turn it to fan only mode and see if it gets colder again. If that is the case then the unit is low on freon and freezing up. I know that sounds confusing but that is how AC works. The low freon pressure means the gas is expanding too fast and the air flow cannot take up the cold from the evaporator fast enough. Turning the compressor off and keeping the fan on will alow the room air to take up the cold.
There is ice forming on the evaporator coils. This is either from a low freon charge or a leak in the seals or windows and doors. Could also be that the drains are not working and water is building up and freezing
Coils freezing due to dust blocked coils and or air filter or short of gas. Service your unit completely.Please do not change any spare/s without knowing exact problem. Please follow the steps given below.
Toget proper heat, keep your temp setting at 30+ degree and also mode in "heat"position. If still no heat, check your heating sensor for closed circuit by anOHMs metre.It it's with RV, check power to RV.If it's with heatingelement check power to element. If power is there but still no heat meanselement defective. Replace new heating element. Thanks.
To get proper cool, keep the tips as follows: 1. Check air filter is cleaned. 2. Check indoor coil is cleaned. 3. Checkindoor blower motor is working. 4. Keep in cool mode. 5. Set temp minimum 3degrees less than room temp.6.Check compressor is working with correctpressure. Thanks. Helpful?
Your AC unit is low on refrigerant. It should be recharged. be sure to keep the filter cleaned all the time as well. If this is an inexpensive unit, it may be cheaper just to get another one, since a lot of people would charge around $100. to charge it. hope this helps you, Rick