Furnace Pilot Light Goes Out After Thermostat Change

Tools That May Help

Before calling a professional, these common tools may help you check the issue safely.

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Problem

Pilot fails after thermostat replacement.

Common Symptoms

  • Weak airflow from vents
  • System running constantly
  • Uneven indoor temperatures
  • Higher energy bills

Possible Causes

  • Wiring issue
  • control fault
  • system misconfiguration

How To Fix It

  • Check wiring
  • inspect controls
  • test system

Safety Tip

Always shut off power to the HVAC system before inspecting wiring or internal components.

When To Call A Professional

If pilot fails after thermostat change, call a professional

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