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Coleman mobile home air conditioner not working.

  1. when I turn thermostat to cool position and then lower temp control on the thermostat the motor does not turn on.I am wondering if there is a problem with thermostat, because the furnase does not work either when switched to heat.

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It sounds to me as if the problem is in the furnace itself. It is probably in a system lock out. You can reset it by turning off the furnace breaker and then turn it back on. If that does not work chances are that the circuit board is bad. This is usually caused by normal wear and tear. You should probably call a technician in at this point.

Posted on Jun 30, 2008

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Posted on Jan 02, 2017

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