Evaporative cooler speed
#1
06-28-18, 08:26 PM
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Evaporative cooler speed
Changed the motor, belt and switch on a 1/3 HP cooler but it still only runs on one speed. Low, and pump at the same time. When switched to vent there is no air at all on low or high speed. Please help
#2
06-29-18, 07:46 AM
Group Moderator
Welcome to the forums.
Did you install a new two speed motor ?
It should have one common and two hot wires..... is that correct ?
Did you install a new two speed motor ?
It should have one common and two hot wires..... is that correct ?
#4
06-29-18, 06:04 PM
Group Moderator
Ok.... so you put in a two speed motor. There should have been one wire connected to the common terminal. This should be a white wire. Then there are two hot wires wire. One should be on the high terminal on the motor and the other on the low speed terminal. These same two wires should appear on the two speed fan switch.
If one speed works and one doesn't..... try reversing the wires on the switch and see if the motor now runs in a different speed.
If one speed works and one doesn't..... try reversing the wires on the switch and see if the motor now runs in a different speed.
#5
06-29-18, 06:17 PM
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Did that, and now only runs on low cool. Used to run on low, high and pump only at the same speed.
#6
06-29-18, 06:20 PM
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So what happens when you put the fan to high speed...... does it run at low speed or not at all ?
You have three wires going to the fan motor. Have you confirmed that you have the neutral on the common screw terminal ?
You have three wires going to the fan motor. Have you confirmed that you have the neutral on the common screw terminal ?
#10
07-02-18, 07:02 AM
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It is permanent, with a wall switch. I was afraid it was wired wrong. This is how we bought it last year in October. Then the motor burnt out ant connected it the same way.
#11
07-02-18, 11:10 PM
What color wires are behind the wall switch? Some builders use two separate romex lines to the roof and then you're left to figure out where two blacks and two whites go. Lol
If that's the case, you'll have to get an ohmmeter out and unhook everything and see what's up. Once you know that, I'll tell you how to wire it all up
If that's the case, you'll have to get an ohmmeter out and unhook everything and see what's up. Once you know that, I'll tell you how to wire it all up
#12
07-15-18, 10:56 AM
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So got the ohm meter and the wires behind the wall are 1 white and 3 black... Not sure I'm using the ohm meter correctly, the numbers just fluctuate between high and low really fast. No accurate readings.
#13
07-15-18, 11:23 AM
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#15
07-15-18, 05:51 PM
Group Moderator
Five wires means this is a conduit system. The only way we'll be able to help you is for you to post us a few pictures. A picture of the wiring at the switch and another where it comes out at the evap unit.
How-to-insert-pictures
How-to-insert-pictures
#16
07-19-18, 09:37 AM
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I couldn't find the advanced options that you posted but I'm hoping that the upload that I did find works...
