Rewiring Swamp Cooler - Electrical Question
 

I'm installing a digital thermostat on my swamp cooler where
previously there was only a six-position manual switch, the normal
factory type (high/low fan, high/low cool, pump and off).

Normally, apparently, there are four wires coming from the swamp
cooler: power, pump, high fan and low fan. Indeed, the manual of the
new thermostat detail how to wire the new thermostat from these four
wires.

Well, after much frustration, I cracked open the junction box on the
cooler and found that one of the four wires is terminated immediately
once inside the cooler assembly, connected to nothing! Now, this
cooler has functioned perfectly for years, and I'm wondering how it
could have without one of its four wires connected.

Any help explaining this and/or helping me to get the new thermostat
working would be much appreciated.

Here's the specs for the new thermostat:

http://dialmfg.com/Technical%20Assis...0Eng%20123.pdf

Rewiring Swamp Cooler - Electrical Question
 

wrote:

I'm installing a digital thermostat on my swamp cooler where
previously there was only a six-position manual switch, the normal
factory type (high/low fan, high/low cool, pump and off).

Normally, apparently, there are four wires coming from the swamp
cooler: power, pump, high fan and low fan. Indeed, the manual of the
new thermostat detail how to wire the new thermostat from these four
wires.

Well, after much frustration, I cracked open the junction box on the
cooler and found that one of the four wires is terminated immediately
once inside the cooler assembly, connected to nothing! Now, this
cooler has functioned perfectly for years, and I'm wondering how it
could have without one of its four wires connected.

Any help explaining this and/or helping me to get the new thermostat
working would be much appreciated.

Here's the specs for the new thermostat:

http://dialmfg.com/Technical%20Assis...0Eng%20123.pdf


Could be a single speed fan. Does the fan run at 2 speeds? Or pump goes
somewhere else? You could trace the unconnected wire back to the switch
to see which function it is for.

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bud--