I checked the contacts. I cleaned them with emery paper to try and make sure there was a good contact. But the buzzing keep on. The buzzing is coming from the brown connector where the contacts are. I am assuming that is the coil? I am guessing I need to replace it since cleaning up the contacts didn't work. Is there something else I should do? If I need to replace it would I need to order the part from a HVAC company or can I get it from a hardware store i.e. Home Depot?
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Re: Buzzing on unit
It sounds like the buzzing is a bad coil. the part is not carried at Home Depot you will have to fine it at an A/C supply house.
there are different types. there are single pole and double pole.
single pole have one set of contacts. doulbe pole have 2 make sure to get the right one. also make sure you get a 24 volt coil.
you could maybe order the part on line.
When changing the contactor. SECURE POWER to the condenser and the air handler remove the existing contactor from the cabinet leaving all the wires connected to it if possible. you may have to disconnect the power leads comming in. Swing it out of the way. Install the new contactor in place then move the wires one at a time matching location from old to new. Do NOT
get them mixed up. Or you could make a drawing of the part on paper locating the wires so you then may return them to the proper location. If you feel this may be to difficult for you call a service company and ask there charge to replace a contactor.
The part is usually @ 12.00 to 15.00 our cost so the part should be @ 30.00 0r 40.00 retail. then a service call charge.
good luck if you need more help let me know
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Just a few thoughts: It is possible you have a bad (blown) speaker on the buzzing radio or the radio has another problem.
A few things you might try include: 1) Cleaning your battery contacts, 2) trade batteries with the known good unit and see if the problem is solved, if so replace the battery, 3) check the mic and speaker holes on both units to be certain they are free of debris and/or stickers covering the holes. 4) if none of these solve the problem, then your radio likely needs retired/replaced.
Check the remote control for its infrared emission. Check it with fresh batteries. Clean the battery contacts in the battery compartment, to make it a good contact with battery terminals. Look for any dust or rust accumulated. Clean it well with an emery paper. If you wish to get more details about how to check a remote control, check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/
Hi, relays will also buzz causing units to loose transformers, I have seen this in the past years also. A 2-stage heat-pump stat? I would remove the front to expose the wiring terminals and pull the hot wire red, 24 volts and that should kill the buzz. If so, the circuitry is going out and you will need a new thermostat. I would, if you have a volt meter check the incoming voltage to the stat to make sure it doesn't exceed the proper voltage rated on the cover. Max would be 30 volts ac. If its over that, the transformer is putting out to much on the secondary side and should be replaced, or it will eventually take all of the low voltage controls out. Try removing the 24 volt hot wire and also if you have a friend that has a meter or you do, check the voltage coming in to the stat. Get back to me if it exceeds the rating, as this will cause the buzzing. It may just be faulty contacts in this stat also. I wish you the best, and ask that you are kind when rating me in helping you. Please keep me posted if you need my help. Sincerely, Shastalaker7 A/C Heating & Refrigeration Contractor.
Heater contactors "buzzing": Do you mean normal buzzing or extra loud buzzing? Loud buzzing or chattering can be caused by low voltage to a contactor. If normal sounds, then probably the relays on the contactors is working, but the contacts may be stuck, or burned enough so as not to make contact. First, get a voltmeter and check for 240 volts AC at the heater contactor terminals. If the voltage is low, most likely you need to check the contactors further. Check for dirty contacts, clean if needed. If the contacts are not moving when energized, then you will probably need to replace one or both of the contactors.
Is the buzzing in the outdoor half of the system? If so
your possibilities are.
buzzing could be the contactor. In the control compartment on the side of the unit there is a small brown component that has wires to one side and the other . There are contacts in the center like points on a car. If the points are pulled in look for ants in between the contacts. Always secure power to the outdoor unit before touching anything inside. If the points are pulled in check your breaker to the outdoor unit. Turn the breaker off then back on. Breakers sometimes trip but look ok.
Buzzing could be thee coil to the contactor itself, sometimes with age the coil will breakdown and cause noise.
if you give me more information I can focas in closer to a solution
First test would be to disconnect the RCAs from the amp and see if the buzzing goes away. If it does, the issue is either with the head unit or noise still being picked up on the RCA cables. If the issue stays, it's possible your electrical system has not a nice and clean 12V. You might have to get your alternator and voltage regulator (if so equipped) checked.
Also, make sure the RCAs on the back of the head unit aren't touching anything metal. Set your gain to 50% and see if the buzzing changes. Check your ground connection and make sure it's short, clean, and solid. If you have multiple amps, ground them to the same point.
1. Check all cable connections to make sure they're secure.
2. Replace the cable connecting the CD unit to your receiver.
3. Clean the contacts on the player and receiver with electronics-grade contact cleaner.