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Re: can i clean it?
If you water wash the condenser section (radiator) you must take measures to protect the fan motor from the water. Air flow across the condenser does affect the operating efficiency of the air conditioner. Cleaning should be done opposite to the normal air flow across the condenser.
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No. This is posted in ac cars and trucks...in that case either the blower motor or the blower motor resistor is bad. If a home unit then either motor or run capacitor are at fault UNLESS you have a multiple speed fan in which case the speed control board may be bad.
IT depends on how old the unit is and the conditions in your area but in split systems the motor is connected to a blower that produces the air flow. This blower is cylindrical in shape with a number of bars that produce the air flow. Over time this blower builds up with debris from the air in you building ( cooking fat--smoke -moisture- etc and is like what collects on the filter. This is what unbalances the blower and has to be removed first. Look up under the opening where the air comes out of and you will see the blower and you will be able to see if it has a build up on the blades. There are ac cleaning products on the market that you can spray in while the unit is operation but be prepared to have to catch the dirty air and bits that will come out. If you have no experience it may be best to get an ac mechanic to come and clean the unit for you.
First, pull-out your a/c unit. Open the electrical control and remove the wiring connections of your fan motor and the compressor. Separate the electrical control and make sure you have the wiring diagram for termination. Unscrew all panels to remove the fan motor, blower, and fan blade from the unit base. You have to move the evaporator farther but be careful with the pipes. After removing the panels, fan motor, fan, and blower wash the coils with water using pressurized water. Spray coil cleaner to remove excess dirt from the coils and wait until all dirt come out. make sure the chemical is not too strong to eat the aluminum fins. Wash and rinse thoroughly the coils to remove any chemicals left in the unit.Clean the panels, fan, blower, and motor.Oil bush type motor.Then assemble fixing the panels, blower, motor, fan blade panel, and fan blade. Screw all parts and rewire the unit.
First check the 15 amp HVAC fuse located in the main fuse block inside the car on the passenger side of the center console, under a cover. If the fuse is good, then the problem may either be the HVAC blower switch (which is the fan blower selector switch), the fan blower motor resistor, or the fan blower motor. An auto repair manual will explain and illustrate for you the steps on how to check each of these components.
Even after pushing the ac light switch on, the fan blower selector switch has to be turned on as well (working) because it provides an electrical path to the positive side of the battery to complete the circuit and turn the ac light on. What the ac light switch does is provide the electrical path for the ac compressor clutch to come on through the ac control relay which is controlled by the car's PCM(computer) when you want ac, but the ac light switch still needs to run through the fan blower selector switch to receive its power. You can turn on the fan without the ac light switch because it gets its ground path(negative) from the blower motor. So the blower motor has to work in order to provide a ground path for the fan blower selector switch to be functional. You could have a faulty blower motor which is why no air blows through the vents. The fan blower motor is located inside the car on the passenger side underneath the dash at the bottom end of the glove compartment box. You'll see it. It's right above where a person rests their feet on the floor. Therefore, if your 15 amp HVAC fuse is good, check to see if you have voltage at the blower motor connector. Unclip the connector and with the ignition on and the fan blower switch moved to any one of the first 3 selections, check for voltage using a multimeter. The voltage will vary because there is a blower motor resistor. Voltage should be higher on setting 3 than 1. If you do have voltage at the blower motor connector, check for a faulty blower motor. The auto repair manual will tell you how to do it using jumper wires.
It's normal that your car is running hot because the radiator fan works in conjunction with your ac compressor. If the ac is on, the radiator fan will be on and therefore the engine coolant temperature will stay in it's normal operating range. If the ac is off, the radiator fan will stay off as well and the engine coolant temperature gauge will begin to rise and show pretty hot (especially at idle). It will do this up until a certain degree then the radiator fan should turn on thermostatically and stabilize the temperature. It's scary and I know what your saying because it does that to my car if my ac isn't on. Don't worry it won't overheat.
You maybe iced up. Turn of AC turn fan on and wait about 45 minutes. If fan is blowing air out of vents chances are you were iced up. Two reason for iceing up are AC coil dirty and low on Freon. You need a service tech to check your Charge on system. If you can get to the coil to clean it grreat. Spray it with water let it set and brush clean with a toilet stool bruch. It will not damage the coil. If it is to stopped up you may have to have a service tech chemicaly clean the coil. Fan motors do go out. ou realy need a service tech to check this Rusty