![]() This indicates that the pressure switch is in the open position when it should be in the closed position. Unless otherwise specified by the manufacturer, this is true for virtually all heating systems. If the furnace has a problem with the pressure switch circuit, you will see a 3-flash warning. In most cases, a rollout switch or an auxiliary limit switch is open when it is indicated by 5 red lights that blink in sequence. If the light on your furnace blinks 3 times in quick succession, it is trying to tell you that the high-pressure push button is not closed. Red 3 times:Ī pressure switch that has been opened is indicated by 3 red flashes. If your furnace displays 5 yellow flashes, this indicates that either the vent or the combustor’s air system is congested. It is also letting you know that the switch for the high limit is not closed. If your carrier furnace displays a total of 4 yellow blinks, this indicates that the heating capacity of your system may be limited to some degree. If you see 3 flashes of yellow, this indicates that there is no cause for concern and that your furnace is simply finishing a cycle that it started recently. ![]() When the furnace’s indicator light flashes rapidly, it’s trying to get your attention in an emergency situation. What does a yellow, red and orange blinking light mean on a carrier furnace? When you see this red light, which is also known as a lockout light, it might also indicate that a safety mechanism on your furnace has caused it to shut down because it has found a problem or recognized a fault and thus shut it down. It’s possible that a red light will be lit up on the burner unit of your oil furnace if it won’t turn on. In addition to this, there is yet another explanation for why the light on the furnace is solid red. There are a few different kinds of lights that will come on if there is a problem with your furnace. If the light continues to glow steadily, it indicates that your heater is operating correctly. On top of your furnace, there is a tiny red light for your convenience. ![]() What does a solid red light mean on a carrier furnace? As soon as that happens, it starts blinking an orange light, just like the yellow light. Sometimes the high-pressure switch fails and the furnace cannot be restarted due to technical issues. If the furnace’s condenser coils are dirty or there is a problem with the high-pressure switch, there may be an issue with the air pressure which might cause the orange color in the furnace. When an orange light doesn’t blink steadily and starts flickering, it indicates that the furnace isn’t producing the correct ratio of gas to oxygen in the combustion process. Orange Inappropriate mix of gas and oxygen: If any of these occur, the light blinks red. If you have ignition problems, replace or fix the igniter. The number of non-working gas burner fins can be determined by starting the furnace. Also, a blinking red furnace light could indicate a voltage problem. If everything looks good, get a new thermostat. If this happens, check for loose connections. Wall wires or a loose connection may cause this problem. When your furnace is flashing red lights, it means that your thermostat isn’t signaling your furnace. If the circuit breaker that controls the furnace has been tripped, the light will flash red, and the furnace will not be able to heat the room.Īlso, it’s possible that the blower motor is being put under too much stress because air vents all over the house are blocked. If the burners still do not light, the switch will repeat the process. As a result, it will begin flashing a yellow light. Sometimes, after three attempts, the high-pressure switch might flip, which will stop any gas flow to the burner. There may be a problem with the air pressure if the condenser coils of the furnace are dirty or if there is a problem with the high-pressure switch. As a result, it lights up the yellow light in the furnace. Sometimes, the furnace cannot be reset because of an issue with the high-pressure switch. ![]() Sometimes, if everything is working right and the thermostat says that cooling is needed, the yellow light will start blinking. If the gas valve solenoid isn’t working right, which can cause the furnace to get stuck in high fire mode, the yellow indicator light will start flashing. Let’s find out the reason behind blinking different colors of light in your carrier furnace – Yellow Issues with gas valve solenoid:
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