I am receiving a DF code sporadically on my Advent Air Digital thermostat. My A/C cycles every several minutes but won't cool. (Advent Air ACTH12 Digital Wall Thermostat)

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Advent Air ACTH12 Digital Wall Thermostat

This Advent Air Replacement Wall-Mounted Digital Thermostat is easy-to-use and offers three-speed blower controls. Available in white only.

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