The continous blinking green light indicated the furnace is stuck in a low fire mode. A dirty or clogged filter can restrict airflow, which in turn can cause the heat exchanger to overheat, tripping the high limit switch and shutting down the furnace. Solution; you can clean the flame sensor by gently rubbing the metal rod with a very light grit sandpaper. Or, if you find that you are simply changing the furnace filters on a regular schedule and are only experiencing the occasional minor repair, you may have a number of years of reliable operation remaining. Some furnaces dont perform system checks. However, if the light is flashing or staying on continuously, its indicating a problem. The problem can be caused by the flame signal being lost and or not sensed during the trial for the ignition period, the blower will come on for 90 seconds recycle delay. This combination of error codes and flashes will show you the source of the blinking. Check for power via the breaker, switch, indicator light, and fuse. While Codes 31, 33 & 13 are the most common, here are some additional causes of a Carrier furnace blinking yellow light: We hope we solved the mystery of what do Carrier furnace yellow light codes mean with our guide to some common codes. If you keep manually turning the knob to stop a rinse or wash cycle, something has gone wrong. This is very important because gas leaks are sometimes present when the lights start blinking. Typically, the furnace will run at low fire for up to 15 minutes, then switch to the high fire mode. Lets find out the reason behind blinking different colors of light in your carrier furnace . What does a solid red light mean on a carrier furnace? The blinking yellow light on your Carrier furnace can indicate an issue with the flame sensor. They will either perform repairs or replace the damaged parts. A dirty or clogged filter can restrict airflow, which in turn can cause the heat exchanger to overheat. Code 1-3: Indicates that a limit flame switch problem that normally auto-resets after 3 hours. Is it an electrical issue? Carrier provides an elaborate owners manual to help users quickly decode the many error codes.
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