I have 2 fo these units, the fan/blower bearings were shot after 5 years. Now this is the second unit [about to fail], just 8 years old. Can someone help me locate parts, I want to repair it myself, I just don't have the cash right now for a pro.
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Re: WeatherMaker 8000 noisy fan
You can take the parts of and match them at a graingere supply if theres one cloce to ehre you live. I think that it has a 1x1/16th" diameter on the blower bearing and its for a spider type. Try not to tightn the belt so much and the bearings might last longer
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First to solve your icing problem. Due to indoor coil & air filter blocked or short of gas ice formation will be there. And also check the speed of blower motor, if less rpm, change capacitor for blower motor. Service the unit also.
Second, for shaking the unit means your out door fan cracked or broken. Check and replace it. Is it helpful?
Check by turning the unit off and turn the fan to on. Do you hear the noise now? The noise your hearing could be coming from your combustion fan assembly instead. Newer furnaces have a in-shot burner and are nosier than the old style of heater.
set the t-stat low and let it run for 5 minutes , stick a thermometer in the return air closest to the unit as possible until you get a good reading , then stick the thermometer in the cold air supply again closest to the indoor unit as possible let sit until it stops going down in temp.
this is called your temp difference and it should be atleast a 14deg. F difference from in to out. if its lower you have a refrigerant problem, Let me know how it goes.