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Old 06-21-2012, 05:42 AM   #16
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Condensor fan motor


sorry jjboy , i forgot to get the sn , but will do so when i get hm.

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Old 06-21-2012, 10:06 AM   #17
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Condensor fan motor


coleman model number = DRCS 0601BFG
sn= W01 5092248
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Old 06-21-2012, 10:31 AM   #18
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Condensor fan motor


could the fan blades be to low or too high on the new motor??? I am thinking that there is normally a ring around the fan blades. I would think if the fan is too low, the blades could be sucking up too much air, thus working really hard and overheating the motor... or the fan might be up to high and over spinning the motor heating up the bearings... just a thought????
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Old 06-21-2012, 10:39 AM   #19
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Bob I have moved the fan in 1/4 inch incriments up and down on the shaft and nothing changes , service tech said it was the wrong motor on the unit , but when i called coleman they said 1/4 hp 1075 would be just fine for the unit so that was a waste of $65 to have a tech tell me wrong motor , I wish i was in a position to tell them to fix it and when they did and it quit in 30 min. refuse to pay and say put my motor back on and take yours because its doing the same thing
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Old 06-21-2012, 10:43 AM   #20
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Condensor fan motor


If your unit has a defrost sensor unplug it at the board, that was the problem with mine with similar symptoms, although my fan motor itself wasn't getting hot.
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Old 06-21-2012, 11:03 AM   #21
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My wife just called me and said it is running good , has been for 3 hrs. she said she has been going out to the unit every 20 min or so spraying the coils and its not getting hot , starting up and shutting down as normal , what does this tell you , possibly to much head pressure or what
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Old 06-21-2012, 12:00 PM   #22
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Condensor fan motor


What sort of logic is installed in your unit? Does the condenser motor adjust for different conditions in the system or is it an on/off sort of thing? If your wife is spraying the condenser, and if what you say is correct that the motor itself gets hot, she is just keeping the motor cool thereby not letting it reach its thermal shut off.

I don't know anything about the newer systems but at least with my older "dumb" system the condenser fan motor either runs or doesn't, and the only logic in it is the defrost sensor.
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Old 06-21-2012, 01:08 PM   #23
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Condensor fan motor


she is not spraying the motor , just spraying at the bottm of condenser , keeping the condensor cool and its working , called a reliable tech that lives to far away for him to drive said its either low on freon or too much freon , as far as a defrost sensor i have no idea if i have one or where it would be located
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Old 06-21-2012, 06:36 PM   #24
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Condensor fan motor


Did u check the fan relay?
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Old 06-21-2012, 08:19 PM   #25
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Quote:
Originally Posted by glambert25 View Post
My a/c quit working at the end of last summer and i just now replaced the fan motor. the original problem : the unit would run for 20 - 30 minutes then the fan motor would shut down , but everything else would still be running. A co-workers brother said condensor fan motor , so i replaced it with a 4mb23 / same as the old one , also replaced the capacitor at the same time. Unit is still doing the same thing , reading about other trouble shooting on here i replaced the contactor but the unit will run for about 20 - 30 minutes then the fan stops again. when it does run it runs smooth blows very cold , nothing freezing up and all the coils are clean and free of any dirt and debree , any suggestions on what to do from here.
[a/c quit last summer and just now condenser motor stops? . system ok till your post above? New motor does the same the same as original!!! Weird. With no air moving thru condenser the head pressure would rise !
If when fan is running and pulling proper current, then current (amps) begins to rise and fan stops !! ! Suddenly or slowdown and stops? Any noise???
it seems that there must be a mechanical drag on rotor (Armature) causing motor to draw higher amps. A rotor getting hot might expand and cause a drag on field coil or vice versa. All the current is flowing in the field coil . Armature (rotor) is a hysterisis type.
If installed improperly the field coil may be binding due to over tension of screws,bracket ,alignment etc.
If that is true you could not turn the fan blades using a coat hanger polked thru the air exaust vents
rotor gets hot and thermal overload opens. OVEN overload would cause amp draw to go to zero!!!
This is a strange thing to happen in a new motor!
Good Luck
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Old 06-22-2012, 09:20 AM   #26
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Quote:
Originally Posted by Jone32 View Post
Did u check the fan relay?
I have replaced the fan motor , the cap and the contactor , where is the fan relay , i have not seen it. i dont know everything on a a/c but i normally get by
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Old 06-22-2012, 02:58 PM   #27
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Condensor fan motor


There is no separate fan relay!
The main power contactor either a double pole or a single pole contactor routes the power to the -start capacitor , coolingfan, and compressor.
My system is wired like that. You need a wiring diagram that shows the components, the color code for the wires and how they are connected to each component.
fan has 3 wires, compressor has 3 wires and the condenser has up to 7 wires and they must be connected properly.
There are systems that have more components for additional devices.
You need to have a diagram ,know how to read it and use an amp meter and volt meter safely.
Regards
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Old 06-23-2012, 08:22 AM   #28
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Thanks everyone , i have found the problem . After further research the wrong motor was installed , it was turning to many rpm's suppose to be 825-875 rpm and mine is 1075 , suppose to be 1.3 amps and it was drawing 2.3 , got the correct motor now but i am trying to find the correct fan blade for the motor , the motor i am going with is FE1028SF , graingers part number is 1UME9

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