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Troubleshooting a Home Furnace Thermostat

By Bob Formisano, About.com

3 of 4

PROBLEM: Heat Either Does Not Reach or Exceeds the Set Temperature


Heat Either Does Not Reach or Exceeds the Set Temperature

Possible Causes



Possible Repairs

  • Remove cover of thermostat and loosen screws holding unit to wall. Level the thermostat. Re-tighten screws and replace cover.
  • To adjust the heat anticipator, please see Heat Anticipator Adjustment.

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