Carrier Furnace Flame Sensor Problem

It is simple if you know what to do.

Carrier furnace flame sensor problem.

I need help with carrier furnace troubleshooting. Immediately after the shut down the unit flashes a code 33 fault which is a limit or flame rollout switch in open fault. Carrier 58ss 58gp 3 wire pilot assembly operation duration. 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.

Sometimes if the flame sensor is dirty it will fail to detect a flame. Ntrol board will shut off voltage to the gas valve to prevent the furnace from heating. I can help you with that. Your gas furnace flame sensoris just one part a built in safety system for your furnace.

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. 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. Faulty flame sensor on a gas furnace troubleshooting video duration. Take out the old air filter and replace it with a new one.

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. If the furnace still doesn t heat replace the flame sensor. How do i determine the cause of the short cycling. I want to try and fix it myself.

Open the door panel to get access to your carrier furnace. If the flame sensor is defective it might fail to detect a flame. 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. Locate the current filter.

The flame sensor monitors the burner to detect whether or not a flame is present. You might also be able to see the rollout occurring. Try cleaning the flame sensor with a fine abrasive pad.