We just noticed that the air coming out of out wall vents is much louder than usual. Normally you can barely hear the air coming out of the wall vents but you can feel the cold air. Now the air is blowing hard, is very loud and does not seem as cold. We also just had the txv valve replaced. Would that affect the fan speed? Can you adjust the fan speed?
Sounds like whoever did the txv, changed the fan speed. Yes, the fan speed is adjustable. Some HVAC units can have up to 4 speeds on the motor. Low, Med Low, Med Hi, and Hi. this is so the same unit can be used for several different cooling coils and tonage. The faster the speed in the cooling mode, the less cool the air will be.
SOURCE: My Carrier AC fan will not turn, only blows out warm air.
Breaker has popped either at breaker box or at the safety shut off switch. Fuses are blown or the sending unit has popped.
SOURCE: New motor runs but doesn't blow air through the registers
Is the blower wheel turning? Did you by chance have to remove the motor from the blower wheel to work on it? If you did, did you put the blower wheel back on in the correct direction of air flow? Also, did you put the correct capacitor back on the unit so it can get up to the required rpm's? These are things that you will need to check for. If the motor is running and the blower wheel isn't and the wheel is tight on the shaft, then you will have to replace the motor. The brushes may be bad on the unit and it's not turning the shaft. Hope these ideas help.
SOURCE: blowing hot air fan not turning outside making a humming noise
Replace the run capacitor. It is a silver cylindrical object located in the electical compartment of you outside unit. There is most likely three places on the top where different color wires are attached. One is marked F,or Fan. The center should be marked C, or Common, and the last should be marked Herm, with wiring to the compressor. Make sure you write down or label each wire you remove and it's correct location. They must be installed on the new part just like they were on the defective part. For you to know which dual run capacitor you need, the old one will have printed on the side either 370, or 440 v,as in volts. You must also need to know the microfarad rating and it is also printed on the side with the voltage rating. Since this is most likely a dual(runs fan and compressor) you should see two ratings abbreviated as mfd. Something like a 5mfd for the fan motor and perhaps a 35 mfd for the compressor. CAUTION !!! This device has line voltage and you must insure the power is off at the disconnect/ breaker BEFORE you begin the repair. Sounds complicated but really only takes a few minutes. The main thing is getting the right mfd and voltage ratings for the new part and keeping a record of where the wires were mounted on the old one, and putting them back the same place on the new part.
SOURCE: The fan on my outside ac unit is not turning on.
change the capacitor. also check to see if the right amount of volts are getting to the unit. look at the contact and put your meter on the appropiate sides and see if its 220-240. if it is, good, then change your capacitor. If not, then stop and call someone who knows what they re doing with electricity. its supposed to get 220-240. if its only getting 110 or so, then your electric co. has a problem. you might want to let it set for a while and try to turn it back on and see eaht happens.......... aint no pro but had the same problems..............
SOURCE: panasonic air con unit is not blowing cold air out.
This unit is use in motels etc. Check the ouside coil ( conderser) from the inside (discharge fan ) for dirt. Most of these units are floor level . This can cause a unit to short cycle ( cold air is at the floor) .
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txv wont effect fan speed it will effect temp air filter will effect air flow and unless it is a new two speed unit or vfd your fan speed can only be changed by terminal swap as written in motor area
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