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Posted by Bud-- on May 9, 2007, 12:33 pm
byamato@gmail.com 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%20Assistance/Technical%20PDF%20documents/PN%207619%20Instr%20Eng%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.
--
bud--
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