fan intermittently cuts out when mechanical thermostat is in on position

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gpabian

Jun 26, 2012, 10:00 PM

I have an Honeywell mechanical thermostat. When the switch is in the on position, the fan will eventually cut out. When I have it on auto, it continues to start and stop with heating and cooling, no issues. Is this solely a thermostat issue, or is there more to it? I am thinking I just need to replace the thermostat. Looking for feedback. Thanks.