How to Fix Furnace Error Pressure Switch Open with Inducer on

If your furnace won’t turn on and you see the pressure switch is in the “open” position, it means that the contacts have separated. This is a sign of a bad pressure switch. If your furnace won’t turn on and you see the pressure switch is in the “closed” position, this means that the contacts haven’t separated. If this happens, you need to replace your pressure switch with a new one. Alternatively, if your furnace won’t turn on and you see the pressure switch is in the “open” position, it means that there isn’t enough voltage or current getting to the switch so it can close properly. In this case, you will also need to get a new pressure switch as well as check any other electrical components in your system as well.

Step 1: Turn off the Furnace Breaker

First, turn off the breaker that controls the furnace. If you don’t, you will cause an electrical shock or start a fire. Make sure you have your circuit box nearby so you can locate the correct breaker. Once you’ve done that, flip the switch off.

Step 2: Check for Faulty Spark Module and Inducer

Next, check the inducer and the spark module. The inducer is the part that produces the high voltage that allows the furnace control board to cycle the furnace on and off. The spark module is the part that sends a spark to the pressure switch to make it close. Make sure that both of these components are clean and free of debris. If there is any dust on either one, clean them off with a soft cloth. If there is still no change after doing this, you will need to replace the inducer and spark module.

Step 3: Check the Pressure Settings

Check the pressure settings. If the pressure is set too high, the contacts in the pressure switch won’t close. In this case, the furnace won’t be able to open. To check the pressure settings, you can either check the manual that came with your furnace or you can manually open your furnace so you can see the pressure switch. To do this, open the furnace as if you were going to change the filter. Once you have done this, you should be able to see the pressure switch. Make sure the pressure switch is set to the correct settings. If it isn’t, adjust it accordingly.

Step 4: Perform a Rotor Test

Perform a rotor test. The rotor is the component that allows the furnace control board to know when the inducer has finished producing voltage. If the rotor is faulty, the inducer will continue to cycle and the furnace won’t turn on. You can test the rotor by unplugging the furnace and watching the inducer. If the inducer doesn’t stop cycling after a few minutes, you will need to replace the rotor.

Step 5: Reset the Furnace’s Electronic Controls

If all of these steps don’t work, the last thing you can try is resetting the furnace’s electronic controls. To do this, you will need a multimeter. Once you have your multimeter, turn off the breaker that controls the furnace and unplug the furnace from the wall. Next, place the probes on the terminals in the furnace’s control board. Once you have that done, turn the multimeter on. Then, slowly turn the dial until the needle is in the “reset” position. Once the needle is there, hold it there for 15 seconds. Then, slowly turn the dial until the needle is in the “on” position. Once it is there, hold it there for another 15 seconds. Once you have done this, turn the breaker back on and plug the furnace back in. After about 5 minutes, you should be able to turn the furnace on.

Conclusion

At the end of the day, The Furnace Error Pressure Switch Open with Inducer on is a minor error that can be fixed easily. However, it is important that you fix it as soon as possible so that your furnace doesn’t stop working. Once you have fixed this error, you will be able to use your furnace again and stay warm during the winter months.