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The fan will not turn on.i have 110v to circit board on the unit, the unit is one year old. it is a colmon mack 8000

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Check the name plate of fan motor if it is 220V or 110V,if 110V but still not running replace the fan motor.

Posted on Jun 05, 2010


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Wiring schematic for an old honeywell R8325C1020-8514 fan center relay..

Without a picture Mike, I'm not sure this answer is absolutely correct but.... most of the old fan centers had a multitap transformer so different colored wires were provided to connect to 110v, 208v or 230v. If thats what it is, white was common to the black for 110v. White was common to orange for 208v and white was common to red for 230v.

If you have red and black hanging loose, possibly the center is connected to orange and white with 208v power supply. Of course many times, the orange and red were interchanged with 208v OR 230v.

Another point is that virtually all residential gas furnaces operate on 110v and 208/230v operated electric furnace.

As stated above, without a picture this is just a reasonably educated guess....Conventional furnaces less than 15 years old typically no longer have fan centers.

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First check and see if a code of flashing lights on the fan board relay is flashing any number of flashes. If it is count the flashes and refer to owners manual for code of number of flashes for the problem with furnaces air handling problems. If not flashing any codes on the fan relay board I would think the thermostat is the culprit. I have had alot of these newer t-stats go bad as compared to the old mercury t-stats of the days of gone by.I have seen old Honeywell round T-87 stats as old as 60-70 years old still working when removed.

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With the ones that I have seen the ups units have a relay that routes the 110v thru the unit when it has 110v power applied. If you are saying it has no output on batteries only then you may be right about the inverter. SAFELY I would just verify on the board that the DC input from the batteries is correct to test your install. It seems there may be a RS232 DB-9 connection on them with available software for communication with them, if it does I would try it.

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Is the display panel lit up? If not look for a fuse mounted on the board.Take the fuse to radio shack and get another. Unplug the unit before attempting to service it.

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Make sure circuit breaker for the outside unit is on or the fuses are good whichever you have. If they are on you can check the capacitor in the outside unit. The capacitor will be a round or oval can and can be metal or plastic. You can also look at the contactor to see what shape it's in.

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I have a Maytag microwave model # MMV4205AAB - manuf. 7/2004. The current problem with it is that when it is plugged in, and not running - it will reset itself to the date/time setup, as if someone flipped...

Chances are you have a failing electrolytic capacitor and/or bad connections on the main control circuit board.

We regularly repair these control units for customers nationwide by mail for $39.95 postpaid in about a week or so with a one-year guarantee.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Feel free to visit here or contact me directly and please include your full model number for more information.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

William E. Miller


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1 Answer

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You can clean Blower wheel one of two ways. !st would be to remove the wheel and clean with the garden hose or if that is not a option for you then you can buy a can of compressed air and clean it that way but you will get a blast of dust and dirt when unit turns on. Make sure unit and/or power is of when doing this. Keeping your filter mainteneced more often will reduce the build up more.

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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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Wireing this type AC with the wrong voltage, will damage more than the circuit boards. I think the installer wil need to be responsible for the damage he created. The factory will also try to get out of the replacement because of the installers lack of know how.

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