Why does my furnace take so long to ignite?

This could be a problem with the gas flow, a bad igniter, a misaligned igniter, a dirty or bad flame sensor, etc. The best way to start diagnosing the problem, is to observe the ignition sequence. Set the thermostat to heat, and turn the set point down so the thermostat calls for heat.

What are the signs of a bad furnace thermostat?

7 Signs You Need to Replace Your Thermostat

Your HVAC Keeps Turning On or Off.
Faulty Thermostat Readings.
Suspiciously High Energy Bills.
Constant Temperature Shifts.
Thermostat Is Too Old.
Thermostat Fails to Respond to Changed Settings.
Your HVAC System Short Cycles.

What does the pilot light on a natural gas furnace do?

Every natural gas furnace contains a pilot light which is there to ignite the gas burner. This component of the furnace must be on for the unit itself to be running. Troubleshooting problems with your pilot light is not necessarily difficult.

Why does my furnace pilot light keep blowing out?

The most common and well-known problem with pilot lights is that the flame can blow out. Sometimes this can happen simply due to a strong draft nearby. Other times, the thermocouple in your furnace might manually shut off the pilot light for safety reasons. Either way, a pilot light must be manually relit after it is blown out.

Why does my furnace not ignite when I Turn on the heat?

5. The Pilot Light (Faulty Ignition Sensor) The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite. This is typically the problem if you can hear your furnace click on but it does not fire up.

What to do if your pilot light does not work?

If that doesn’t solve the problem, proceed onto other troubleshooting techniques. If you find that the pilot light does not remain lit after re-ignition, you likely have a problem with your thermocouple. Consult with your instruction manual once again to find out how to replace that unit.

How to troubleshoot pilot light of your furnace?

Find the pilot valve on your furnace and find the box the knob with the on/off options. Turn that knob to “Off”. Find the pilot light near the gas burner tubes. Use a long match or lighter to ignite the flame. Do so by setting the knob or reset button from “Off” to “Pilot” Hold the lit match or lighter up to…

What is the standing pilot light on a gas furnace called?

A gas furnace’s standing pilot, in which the flame is lit at all times, is sometimes referred to as a pilot light.

Why does my pilot light start to burn?

Dirt builds up on the intake valve. One of the reasons why a pilot light can start to burn inefficiently is that dirt can build up on its gas intake valve. When this happens, the flame’s oxygen supply will be restricted.

How do you change the pilot light on a gas burner?

Turn that knob to “Off”. Find the pilot light near the gas burner tubes. Use a long match or lighter to ignite the flame. Do so by setting the knob or reset button from “Off” to “Pilot” Hold the lit match or lighter up to the pilot and depress the knob or button for 30 seconds. On th pilot remains lit, turn the knob or button to “On”.