View Full Version : Swamp Cooler Motor/Switch wiring diagram

Aug 19, 2008, 04:02 PM
The switch to my evaporative cooler quit working and I purchased a different type switch. Same functions, different type. Theswamp cooler motor has quit working because I apparently wired the switch wrong. I'm going to buy a new motor but need help with wiring the motor to the switch. The switch has the following settings: Off, Pump Only, Low Cool without pump, High Cool without pump, Low Cool with pump, High Cool with pump. I did find a schematic for the switch but it's the motor that has me stumped. I do not want to buy another motor.

Thank you for your help! :)

Jack Robinson

Mar 8, 2012, 01:47 PM
You will want to use a Multimeter to figure out which of the wires is 'Hot', or always on, then you will have the other three wires - Pump; low cool and high cool, the white goes to the neutral.

This is a great resource, with diagrams, for different Evaporative Coolers (http://www.perfect-home-hvac-design.com/swamp-cooler-wiring.html).

Jul 11, 2013, 09:13 AM
Useless info - only 3 wires coming out of the hp 2 spped motor - NOT 4

Sep 4, 2013, 11:09 PM
red = high speed
black= slow speed
white = neutral
green = ground unless you have metal conduit
blue/orange pump
you should have 5 wires going from control switach to the cooler 4 if the conduit is metal.
in the cooler you separate these wire where red black and white goes to the motor and blue/orange and white goes to the pump and don't forget the green to tie it to the frame. Some manufacturers have a hrness that does that for you.

Jun 13, 2014, 08:27 PM
Cistor's post is the only thing useless. Guess he doesn't know that the fourth wire is the motor's ground which is via the motor housing.