Question about Mastercool 67471 Evaporative Cooler Air Conditioner

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Master cool blower motor?

It seems to be working but it i can hear it clicking alot?

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If this is a regular roof mounted unit then I will suggest that the motors internal clutch could be failing. If your unit is ducted then it could be something in the duct like paper. Sometimes as the wind flows through flex ducting it can also make this sort of noise.

If this is a portable Evap cooler then there is a rod that extends from the main blower to the pump assembly. You can probably see it turning with a flash light. If it is wobbling then it could be the pump or gear. As usual make sure the unit is clean and all the water ways (including the hoses) are clear of obstructions.

Posted on Jun 25, 2008


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