Condenser fan running properly but blowing cool air out of the top, house is 86deg. I could here my compressor trying to turn on and then kicking out on a thermal. I put a hard start cap in parallel with the run cap and it started right up and began to cool but I noticed the fan turning the wrong way. I reversed the leads of the hard start cap but to no avail.
I thought it might be the original units cap but the fan was working fine and turning in the right direction before. I tried holding the fan still until I turned the unit on and then physically turned the fan in the right direction but it still wants to turn in the opposite direction.
I'll remove the hard start unit but technically speaking, why is this happening. Thanks, Mike
I am having the same problem, sometimes it runs in the wrong direction, blowing the air down. Sometimes something gets tripped and I need to turn the thermostat to off and wait a bit then restart it. If I am lucky it will run int the correct direction and also will warm the house. Sometimes it send nothing but cold air to the house's forced air.
The motor is likely bad. Ths usully only happens when something causes to start running backwards, like a breeze or if dual condenser the one fan can make one of the ****, then when the power comes on it can't reverse it self to start running the correct direction.<br />
Sometimes you can add chock or one way catch that only allows the fan to run one direction, othewise a new motor should fix the problem.
If original fan motor, not repaced with universal,
or wrong motor then -
Always remove old capitor and install new.
Sometimes you might get away with changing
dual to single for bad side of dual,
replacing either compressor or fan cap -not recomemended
if dual available use new. Hard starts work with old capacitor sometimes - but a burnt out compressor is not worth it.
Fan motors can turn other direction due to fan relay board,
reversing wires of fan on fan relay/board can fix this. bad diode of board or board problem.
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Re: Condenser fan running backwards on heat pump
The fan should be blowing out on the top. Cool air means something is up with the compressor.You hard start kit should be on the compressor itself and have nothing to do with the fan. Its in the wiring.
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This is a common issue, and have just experience the same in my home. I am also an HVACR service tech, and will outline the most common problem that causes this.
If it blows cold air, your compressor is working fine. For a certain reason your compressor is turning off.
The compressor needs constant cooling of the motor and its windings. The compressor is also equipped with an overload switch (this turns the compressor off when temperatures inside get too hot). This is probably what is happening in your case.
The condenser coil (the outside coil that is silver with all the vertical fins) is where heat is rejected. A fan blows air over the condenser to help remove this heat. The condenser needs to be clean at all times.
First thing - check the condenser for dirt/leaves/cottonwood. If it is dirty, use compressed air, or water to clean the coil, being very careful not to damage or bend the fins, this will impeded operation and cause you to lose cooling capacity. Clean in a vertical motion with the fins.
If you find the condenser coil is clean, check the condenser fan motor (the blades are usually made of plastic) for broken or damaged blades, and then look into the unit to see if the condenser fan motor runs if in fact the blade is intact.
I believe if you follow these steps you are either going to find a dirty condenser, or a bad motor/fan blade.
The only other reason could be a low refrigerant charge not allowing the unit to cool properly, but this can only be verified with refrigeration gauges and a trained service technician, unless you can visually verify oil spotting in the unit, indicating the presence of a leak.
Are you sure there is a condenser reset button?If there is,the condenser is on the opposite end of the tubing where the compressor and evaporator are.You may have to remove a panel but if there is a reset,it may be right on the condenser itself.Knowing the way stuff is made these days,it is probably in the hardest to reach spot possible.lol.Good luck! Greg
I would say that if it starts cooling when it's turned on, then it has freon in it. Sounds more like it's kicking off on high head pressure, meaning the condenser is not getting cooled, head pressure builds up then a safety limit switch shuts it down to save the compressor from burning out.. Is there a condenser fan maybe not operating? or are the condenser coils clogged up with dirt?
Is this a window unit? Sounds like the compressor may be cutting on and off. That would cause the alternating air temp you are feeling. Make sure the condenser fan is running. If it isn't running head pressure will build up on the compressor until it shuts down. Then the pressure will equalize and the compressor will kick on again. Also check your filters and the condenser coil to make sure it is clean. Let me know what you find.
You air handler and condensor run off of two seperate circuit breakers. They share the same control voltage source. With the air handler responding to the thermostat setting, we know you have control voltage. You either have a problem with the line voltage at your condensor or something is happening in the control. Check your circuit breakers and/or fuses to your outdoor unit. Also, look for a red button near the area where the refrigeration pipes enter your condensing unit. Push the red button. If it starts to run, your unit went out on High Head Pressure. A dirty air filter this time of year can cause head pressure problems in the heat cycle (assuming this is a heat pump). Also check for cleanliness of the condensor coil and ensure proper operation of the outdoor fan motor.
There are a couple of components inside the condensor that could prevent it from running. One is the contactor. If the contacts are pitted or if a bug crawled in between them, it will prevent the unit from running. Another component is the Dual Run Capacitor. If this fails, it could prevent operation of your outdoor fan and compressor. Don't forget to check all your wires and connections. Always shut off all power prior to reaching into the electrical compartment.
I hope you find this to be very helpful moving forward. :-) Testing Run Capacitors
This is often found in small compressors when they heat up too much or too often. check to be sure the condenser coil is clear and has good airflow. If so and it still trips on overload then the compressor is bad. Hope this helps. Good luck.
sounds like the compressor is having trouble starting. this could be the start components or the compressor itself. if the fan is running when you hear the "kicking in" noise it is you compressor, they are generally PSC motors, that require a capacitor to start, the capacitor could be bad, or the compressor may need a start kit added to it, they are available to the public at most appliance parts houses, you will need the model and serial number of the unit to select the proper one.
It not uncommon for the condenser motor to blow out, if evertything else is ok. The unit will kick in normally and you'll start getting cold air inside. Since the condenser is not doing its job, the unit's thermal protection will cut off compressor until cools down and then will start again.
Replace condenser motor (around $100) ASAP and do not use unit until then, othewise, major damage to the unit can occur.