AC went out on us last night-
The outdoor unit seems to be working properly as the fan kicks on and off as the thermostat dictates.
Inside, the insulated frion line entering the furnace has a bit of ice buildup on a release valve.
The furnace seems to WANT to kick on when the thermostat indicates, however all I get is a buzz from down at the blower motor. No air is pushed through the ducts when the buzz is heard. It kicks off after 20-30 secs or so.
The circuit board has the LED light flashing properly.
I'm stuck in 90+ degree weather with a week old newborn with no one to get out to us till tomorrow :)
Does a blower motor have a fuse of its own or does the furnace have one as a whole.
The
2006-07-29 06:51:11 · 6 answers · asked by drbmurray 1 in Home & Garden ➔ Maintenance & Repairs
You've probably got a worn out blower motor (or condeser or motor relay. BUT, check all the fuses or circuit breakers to see if the one that feeds the furnace is tripped or blown. Also, since it hums, pull out the furnace filter and see if there is something keeping the blower from turning. You MAY have to take a cover off the blower compartment. If you get the cover off the blower compartment in the furnace (where the hum comes from), with the furnace turned off, reach in and see if you can get the blower to turn. As long as it's off you shouldn't be able to damage yourself. If it will turn, try turning it on again and see if it will run and blow air. If it won't blow air you might, if you are brave and awfully hot, turn the a AC/furnace back on and reach in and see if you can get the blower to start spinning. It might go.
2006-07-29 07:12:38 · answer #1 · answered by DelK 7 · 0⤊ 0⤋
Step one (Safety first!): Turn off the power to BOTH of the units.
Step two: Inspect the blower motor in the inside unit. See if it is locked up. It should turn easily by hand. If it doesn't, see if something is stuck in in it. If it is clear and still turns hard, try oiling the motor bearings. Look for a small tube leading to the bearing. You may need to go to the hardware store and get a bottle with a pull out tube to reach them. Put 5 or 6 drops in each tube. Over oiling is also hard on the motor. Wait 1 hour and try to turn the fan again. You may need more oil but go easy on it. If it turns easier try to run it.Turn on the power to the inside unit. Flip the switch on the thermostat from auto to manual. Listen for the fan to run. If you hear that buzzing sound, turn it off. Do not run the outside unit if the inside fan will not run. Doing so could hurt the compressor. That will cost big bucks to replace.
The buzzing you have been hearing is what is know as "L.R.A." That stands for Locked Rotor Amps. The click is the motor's overload device. When it overheats, the device trips, shutting down the motor. If this device has tripped more then one time it needs to be replaced. They are made of bi-metal. They flex every time they trip, getting weaker each time.
You are getting ice on the the pipes because there is no air flow over the indoor coil.
Please get your fan motor checked.
2006-07-29 14:35:47 · answer #2 · answered by Scott E 3 · 0⤊ 0⤋
Too many people guessing the problem could be simple like your filter or could be blowermotor though i doubt that it sounds like because it wasn't moving enough airflow the lines froze up and when it goes off it thaws out causing water to drip onto motor thus causing buzzing sound 7 out of 10 you'll need to replace the cap. and if the filters are clean and nothing blocking airflow then it could be the blower.But other than this u can do nothing but wait
2006-07-30 12:21:54 · answer #3 · answered by SEAN P 2 · 0⤊ 0⤋
No , the blower motor does not have a fuse. and you are most likely going to have to replace the motor. i have 1 suggestion and it is a long shot but if you have a multi speed motor you can try to change it to medium high or medium speed depending on your motor config. or this may seem kinda stupid to you but you can also try turning the heat on just to confirm that the motor is definitley bad.
2006-07-29 14:34:24 · answer #4 · answered by teabagme 3 · 0⤊ 0⤋
you undoubtabley have a bad blower motor. it has to be replaced. best thing to do is go to home depot, get a window unit. it will cost no more than an O.T. service call, and you will have it in case of future emergencies...then get the motor relplaced during reg. business hrs.
2006-07-29 21:03:23 · answer #5 · answered by JUDAS PRIEST 4 · 0⤊ 0⤋
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2006-08-01 10:11:35 · answer #6 · answered by Anonymous · 0⤊ 0⤋