Question about Mastercool 67680 Evaporative Cooler Air Conditioner

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Motor cycles on and off. It is a roof top unit don't know how old. this is a rental house with an absent landlord. don't want to and cant spen much money on fixing but don't want to burn it up.

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  • rnnana Jun 16, 2008

    it is irregular and there is no thermostat. this rental was really trashed and i have no idea how long, if ever, the cooler has been serviced. temperatures are in the 100 to 110 range with low humidity

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Is this on and off cycle rapid and irregular? If so it may be loose control wiring or a bad thermostat.

If the Cycle is not rapid it may simply be trying to satisfy a heavy heat load.

Posted on Jun 16, 2008

  • Don Berry Jun 16, 2008

    The first thing to do is to turn the unit off at the breaker and find the thermostat. Maybe the tenants broke it off the wall or something. If you can not find the thermostat than it is time to call in a contractor. It may have been broken off the wall, stolen or something.




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