Carrier Furnace Flame Sensor Problem

Take out the old air filter and replace it with a new one.

Carrier furnace flame sensor problem.

I need help with carrier furnace troubleshooting. If the flame sensor is defective it might fail to detect a flame. If the furnace fires but won t stay lit the flame sensor may need to be cleaned or replaced or the furnace control board could be bad. In many cases if the furnace startup sequencegets as far as ignition then immediately shuts back off it can generally be traced to the flame sensor.

It is simple if you know what to do. Locate the current filter. Sometimes if the flame sensor is dirty it will fail to detect a flame. How do i determine the cause of the short cycling.

The flame sensor monitors the burner to detect whether or not a flame is present. Immediately after the shut down the unit flashes a code 33 fault which is a limit or flame rollout switch in open fault. You can detect a furnace flame rollout if you notice any signs of singing or discoloration on the exterior of your furnace s combustion chamber or other nearby parts. I want to try and fix it myself.

Your gas furnace flame sensoris just one part a built in safety system for your furnace. If the furnace still doesn t heat replace the flame sensor. Answered in 3 minutes by. Try cleaning the flame sensor with a fine abrasive pad.

If the flame sensor does not detect a flame the co. You might also be able to see the rollout occurring. If you re carrier gas furnace is a condensing unit a high efficiency furnace it may be that the condensate pump is bad or that the trap in the condensate drain is filled with sediment. Carrier 58ss 58gp 3 wire pilot assembly operation duration.

I can help you with that. Ntrol board will shut off voltage to the gas valve to prevent the furnace from heating. After the fan stops the fault code clears and the unit initiates the burner start sequence and runs for another few minutes and so on.