What to do if your Keeprite Furnace is Showing Error Codes

Keeping your home warm and cozy during the winter can be challenging. If your Keeprite Furnace is giving you trouble, you may feel freezing in your own home. Thankfully, troubleshooting a Keeprite furnace is relatively easy. Whether you are simply looking for error codes or want further assistance with diagnostics, there are many solutions. Even if your Keeprite Furnace isn’t working properly right now, reading through this article will help prepare you to deal with potential problems in the future. If your Keeprite Furnace isn’t functioning properly, it’s important to take action as soon as possible. Continuing to use the device could lead to more extensive damage and more costly repairs. The following troubleshooting guide covers some of the most common issues related to Keeprite furnaces.

Error Codes

If you are having trouble with your Keeprite Furnace, you may notice some error codes on the display screen. Before you try to troubleshoot any issues, make sure you can identify the error code the Furnace is displaying. If you aren’t sure what the error code means, you can find the explanation for each code below. F9 – This is a general error code that doesn’t correspond to any specific issue. Double-check all of your connections, make sure your thermostat is properly programmed, and try resetting your Furnace. If the error doesn’t clear up, contact a professional. F1 – This error code typically means the flame has gone out or the gas valve isn’t open. Check that your pilot light is lit, that your gas valve is open, and that the thermocouple is intact. If the issue persists, you may need to replace some parts.

Check the Filter

The first thing you should do when troubleshooting your Keeprite Furnace is check the filter. If it’s dirty or clogged, the Furnace may not function properly. If you can see debris or buildup through the filter, you know it needs to be replaced. Dirty filters can cause several issues, including improper airflow and short cycling. Cleaning or replacing your filter should resolve these issues. If you don’t have a filter installed, or if it’s completely clogged, your furnace won’t turn on at all. You should install a filter on every unit, even if the manufacturer doesn’t recommend it. Filters are relatively inexpensive, and they’re easy to replace.

Check the Venting

Problems with the venting can cause your furnace to short cycle or run improperly. If your furnace is short cycling, it may shut off before the thermostat can kick in. If the Furnace shuts off too soon, you might not have enough heat in the house. If your furnace is running too long, it may be burning more energy than necessary. Every year, the venting system should be inspected, and any clogs should be cleared out immediately. If your venting runs through your roof, it should be inspected twice a year. If your vents aren’t installed properly, you may consider hiring a professional contractor to inspect and repair the system. Improperly installed or blocked vents can lead to major problems with your Furnace, including carbon monoxide leaks and fire.

Problem with the Electronic Control Board (ECB)

If you notice that your furnace isn’t functioning properly, check the electronic control board (ECB). If the board is defective, you may notice that the Furnace is short cycling, running inefficiently, or completely shutting off. You may also notice that the thermostat isn’t functioning properly. To troubleshoot the issue, you can remove the ECB and check the connections. If they’re loose, you can tighten them appropriately. If they seem damaged, you’ll want to replace the board. To avoid issues with the ECB, you should keep it dry and clean. The board should be accessed every few years to remove dirt and dust. The best way to do this is with compressed air.

The Flame Sensor Doesn’t Respond as Expected.

The flame sensor should always light the pilot light and then shut off once the pilot has caught it. If the sensor doesn’t respond as expected, you should clean or replace it. To clean the sensor, remove it from the Furnace and carefully remove any debris from the sensor. You don’t want to touch the sensor with your bare hands, as oils from your hands can cause damage. You can also replace the sensor with a new one if the wiring is the same. If the sensor continuously activates or never shuts off, it may be broken. If this is the case, you’ll need to replace the sensor.

The Furnace Can’t Find the Thermostat.

If the Furnace isn’t able to find the thermostat, there are a few things you can check. The first thing you should do is verify that the thermostat is properly connected. You should also make sure that the thermostat is properly programmed. If the thermostat is connected and programmed correctly, you may have an issue with the wiring. If the thermostat wires are touching, they may cause a short circuit. If this is the case, you’ll need to repair the wiring. If no wires are touching, you may need to reprogram the thermostat. Reprogramming may reset the thermostat and allow the Furnace to function properly again.


If your Keeprite Furnace isn’t working properly, troubleshooting the issue is relatively easy. Follow the troubleshooting guide above to identify the problem and make the necessary repairs. It’s important to address furnace issues as soon as possible to avoid more extensive damage and more costly repairs in the future.