Having a blinking red light on your furnace can be concerning. It is not always a sign of an emergency, but it can indicate that something is wrong with the system. Before you call a professional AC and water heater repair contractor for assistance, take some time to learn what can cause a blinking red light on your furnace so you can determine if it needs immediate action.
Dirty Air Filters
The first thing to check is the air filter. Too much dirt and debris buildup can restrict airflow and cause a blinking red light on your furnace. This is usually an easy fix, which is as simple as replacing the air filter with a new one.
Faulty Blower Motor or Fan Belt
If the air filter is not the cause of your blinking red light, it could be due to a faulty blower motor or fan belt. The blower motor and fan belt work together to circulate warm air throughout your home. If one of the components fails, the furnace may indicate this with a blinking red light.
The thermostat settings could also be the cause of a blinking red light. Make sure that your thermostat is set to the correct temperature and that all settings are properly adjusted. If you cannot find any issues with your thermostat, it may be time to call a professional for help who can give you a fair AC repair cost.
Clogged Drain Line
Another potential cause of a blinking red light on your furnace is a clogged condensate drain line. This component helps remove excess moisture from the system, and when it becomes clogged, it can disrupt your furnace’s normal operation.
If the furnace is running too hot, it can cause the system to overheat and trigger a blinking red light. This could be due to a lack of airflow or blocked ducts, so check your system thoroughly for potential blockages.
Malfunctioning Control Board or Relay Switch
If none of the above issues are causing the blinking red light, it could be due to a malfunctioning control board or relay switch. The control board helps regulate the operation of your furnace, and if it is not working properly, this can cause a blinking red light on your system.
Get in touch with Tyler, your top AC repair company, for all your heating and cooling needs. We are available 24/7 for emergency service, and our team of experts can help diagnose and resolve any issue you may be having with your furnace. Call (203) 660-2031, or fill out our online form to request an estimate.
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