Why is my furnace fan working but no heat?
Dirty filters are the most common cause of furnace problems. Dust and dirt restrict airflow—and if the filter gets too clogged, the heat exchanger will overheat and shut off too quickly, and your house won’t warm up. If the blower is running but no heat is coming out, replace the filter.
Does a Trane furnace have a reset button?
To access it, you’ll need to remove the front panel of the furnace. You may find that many models have limit switches where the reset button is located. The button is often located on top of the switch and will need to be pressed to initiate the reset.
Why is my Trane furnace not kicking on?
If your furnace won’t turn on, it is usually either a problem with the circuit breaker or with the thermostat. Check that the circuit your furnace is connected to is on, and if not, simply restore the power.
Why is my furnace not pushing out heat?
First, check to make sure the thermostat is set correctly. You will want to make sure that the fan control is set to auto, and not ‘on’. If the thermostat appears set correctly, turn off your heater at the thermostat and check the filter. If the filter is dirty, replace it.
Can Hear furnace but no heat?
When you turn the furnace on but no heat comes out, there may be an obstruction. Dirty air filters restrict airflow, which can make it feel like not much heated air is coming out of your vents. Check the furnace filter and replace it if its surface is covered with contaminants.
Why is cold air coming out of my vents when the heat is on?
This issue could be caused by an improper thermostat setting. Check that the fan blower switch is set to “auto” and not “on.” When the “auto” setting is chosen, the fan will only run during a heating cycle and won’t push air that feels cooler through the vents in between cycles.
How do you reset a Trane?
Steps In Resetting Your Trane AC Thermostat
- Switch off the thermostat. …
- Locate the circuit breaker. …
- Turn off the air conditioner from the circuit breaker. …
- Remove the Trane thermostat from the wall. …
- Wait for a few seconds. …
- Switch the air conditioner and the thermostat back on.
How do I reset my Trane furnace lockout?
High Temperature Limit Lockout
If the error light on the Trane is flashing four times, lower the thermostat to just above air temperature, and press the red “Reset” button. If the problem occurs again, disconnect power, and contact a qualified service professional for help.
What does a red blinking light mean on a Trane furnace?
You should never be concerned when there is a continuously blinking light. This means that your furnace is working normally. The red blinking light for your Trane XR90 furnace indicates that your unit was shut off due to a problem. Your system is currently locked out of its normal operation or ability to function.
Why is my heater running but not blowing air?
Check Your Furnace Air Filter
Next, check your heater’s air filter, as this can cause a furnace to stop blowing air. Your filter could be so saturated with dust and debris. In that case, even though the furnace is actually blowing air, your clogged filter is blocking it from making it into your ducts.
Where is the fan limit switch located?
Your fan limit switch is located inside the furnace panel cover, usually near the upper right corner. The fan limit switch is responsible for turning the blower on and off at the appropriate times.
How do you clean the flame sensor on a furnace?
Quote from the video:
Quote from Youtube video: So if you have a situation like this what you have 90% of the time is just a dirty flame sensor. So we'll go through the steps on how to clean it. So the right side of the furnace.
How much does it cost to replace a furnace flame sensor?
Flame Sensor
It stops your furnace from letting off large amounts of natural gas if it’s not working properly. If the sensor is bad, it won’t be able to sense heat and will turn the furnace off. The average cost to repair or replace a flame sensor is between $75–$200.
Where is furnace sensor located?
A furnace flame sensor is a very basic part of your furnace. It’s located on the burner assembly and is just a thin metallic rod. It’s usually bent, and it sits just in front of the pilot flame inside the furnace.
How do you trick a flame sensor?
Luckily, making such a check is very easy:
- Take a multimeter with microamps (µA) measuring system.
- Keep the furnace system turned on.
- Connect it to the wire that is leading to the gas valve.
- Connect the other side of the multimeter to the sensor terminal.
- Take the lead away from the flame sensor.
Can a furnace run without a flame sensor?
It’s a thin, metal rod that monitors the pilot flame. If the pilot flame goes out, the flame sensor will turn the unit off to prevent natural gas from leaking into the home. Without the flame sensor, if the pilot light goes out but the gas valve remains open, the gas will not burn and will seep out of the furnace.
How do you test a flame rod sensor?
Remove the lead from the flame sensor and connect it to one probe from the meter. Then, connect the other meter probe to the sensor terminal. Turn up the thermostat to call for heat and check the meter reading when the burners ignite. It should read between 5 and 10 µA.
Can I bypass flame sensor?
Yes. You can bypass the flame sensor. However, if you do so, you can’t manually light your furnace, and you’ve got to have proper bypassing safety measures in place. But it’s advisable not to bypass the flame sensor.
How long do furnace flame sensors last?
If you’ve just replaced the sensor or had a new furnace installed, you can expect the flame sensor to last for about five years. The average lifespan of a furnace is 15 to 30 years, so you can anticipate a flame sensor replacement once or twice over the course of your homeownership.
How often do you have to clean a flame sensor?
Even if the flame sensor is in proper working order, it is advised that you replace it every two or three years as a preventative measure.
