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It froze up today and it sounds like something is trying to start but it never really gets going then it seems to power down, outside fan unit seems to be working ok.

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That would be your indoor blower motor. It is either a bad motor or the capacitor is bad on it. Replacing them are never fun. The unit is freezing up because there is no air flow going across the evaporator coil when the outside unit is pumping refrigerant through the system. Hope this points you in the right direction!

Posted on Aug 05, 2010

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Posted on Jan 02, 2017

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Turn power off to air handler. Jump red and green inside the machine. Turn power on. If fan runs then the problem is likely outside of the machine, that being tstat or tstat wire.

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Outside unit will only run for a short amount of time with A/C before the fan stops turning and starts humming, squealing/screeching and the top of the outside unit gets hot.


The bearings are bad in the motor and after the fan runs enough it eventually gets hot, making the bearing screech and the fan locks up. Need to replace motor again. See if it has a warranty. The reason it gets hot is because the fan is what removes the heat from the coil and if the fan isn't running there is nothing to cool it off so to speak.

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its look like blower problem , 1st check blower speed controller, check blower motor , check its ball bearing etc , its does not have any link to external unit .

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The outside heat pump makes a continuous buzzing noise along with a short intermittent louder/lower frquency buzz noise... the fan never turns, the house attic unit fan runs but the house never cools. ...


Sounds like your condenser fan motor (outside unit) is 'froze up.' Bearings are probably bad. I would suggest having a Service Tech check it out.

Not much you can do yourself - maybe look for an obvious loose wire or something (if you do this be sure power is all off).

It's possible a 'fan capacitor,' (a small grey/silver thingamyjig about the size of an oversized cigerette lighter) is bad - (it will have a wire from the fan motor going to it) but - "not likely."

If it (fan cap) is bad - sometimes they will 'bulge' which is a dead giveaway that it is bad. In which case you could take it down to an AC parts house and get a replacement. If you do this - be sure 'all power is off,' and you mark the wires when your remove the old fan cap - and buy an exact replacement - so you can hook it back up correctly.

Again, the most likely problem is that the fan motor itself is bad - and needs replacing which will run about $200 if a Service Tech does it.

Note: it's possible that you have a 'blown fuse' or a 'tripped disconnect,' on your outside unit - so - I would make sure that your 'fuses/breakers' are all good too.

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You amy ahave a bvad capacitor on the outside unit. It starts the fan and the compressor. You can change this yourself. Open the outside panel and you will see a silver canister with terminals out the top. Replace this and I think your problem will go away. On the cap. it will say something like 30uf 5uf 370 ot 440 Just get these numbers and get a new one. Russ

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Heat pump not cooling


You may have a bad running capacitor on the outdoor unit. It is a round or oval can with three sets of prongs on it. Over time they can either become weak or swell due to an overload.

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My air conditioner fan is broken, i think.


Fan may need a new start capacitor. It appears or sounds like the motor is not getting the puwe it needs I don'y know what "not fast enough" is to youm but those fans really dont turn very fast, There should be two fuses in a box near the outside unit/ One can bbe bad causing low power to unit. To ck the, There should be something on the fuaw to indicate it's blown. WARNING!! dO NOT TRY REMOVING WITHOUT TURNING OFF ALL POWER AT THE MAIN HOUSE SUPPLY CIRCUIT BREAKER, hIGH VOLTAGE CAN AND WILL, GIVEN THE CHANCE. iF IN DOUBT, CLL OUT A QUALIFIED SERVICE COMPANY.

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Clicking sound is the contactor engaging to start the outside unit. Check for a burnt off wire at the contactor. For some reason you are not getting power to the outside unit. If you find a burnt off wire shut off all power to it then remake the connection at the point of the circuit break.

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Infocus 4805


I think the problem is the ECA controller (main board). It is through this that the fans are powered. Try to measure the voltage supplied to it (CN377 on the board for the larg lamp fan CN376 for the smaller fan), it shouldn't be less then 5v this can only be achieved if you activate the lamp door switch by jamming a piece of card board in it and powering the projector up. Take caution, and don't touch anything else, high power voltages are also present. You could also try to supply the fan with an external supply 6 to 12 volts after you unplug it from the main board, to make sure the fan is OK making sure of the correct polarity, red wire is +, black is -.

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Sounds like the fan shroud on the hot side has come loose, or something is rattling around inside. Looking through the exterior vents may reveal the trouble, but the unit will have to come out & have the cover removed for repair. You can try lifting the outside corners one at a time while the unit is running & see if the noise stops. If so, a shim wedged under that corner will hold you for the season.

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