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Carrier furnace error code 43

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Carrier furnace error code 43

Error code 43 is a home heating term which typically means that the flame sensor has detected a condition that is not safe.

The flame sensor has detected a condition that is not safe and no gas can be provided to the furnace igniter. This condition can be caused by the flame sensor assembly (also called thermocouple) being disconnected or shorted to ground, an open in the flame sensor circuit, an obstruction in the pilot gas path, or high pressure in either pilot or main burner.

This code pops up when the blower fan does not turn on, or the back pressure valve is defective. It can also indicate that there is a problem with the heat exchanger pressure relief valve.

If you’re experiencing this issue, it’s best to contact a professional like Carrier furnace repair service in Chicago to fix the issue before it becomes more serious.

Carrier furnace Error Code 43 is a common error code that can be caused by a number of different issues.

Due to the complexity of Carrier furnaces, there are often multiple causes for the same error code. It is important that you investigate in order to ensure that you do not make your problem worse.

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