Carrier Furnace Flame Sensor Problem

Ntrol board will shut off voltage to the gas valve to prevent the furnace from heating.

Carrier furnace flame sensor problem.

Take out the old air filter and replace it with a new one. 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. If the furnace still doesn t heat replace the flame sensor.

Usually found where the cold air enters the unit either in the cold air return duct or the entrance to the blower chamber. Try cleaning the flame sensor with a fine abrasive pad. 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. Locate the current filter.

Immediately after the shut down the unit flashes a code 33 fault which is a limit or flame rollout switch in open fault. The flame sensor monitors the burner to detect whether or not a flame is present. 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.

If the flame sensor does not detect a flame the co. Open the door panel to get access to your carrier furnace. Your gas furnace flame sensoris just one part a built in safety system for your furnace. You might also be able to see the rollout occurring.

Faulty flame sensor on a gas furnace troubleshooting video duration. Sometimes if the flame sensor is dirty it will fail to detect a flame. If the flame sensor is defective it might fail to detect a flame. I can help you with that.

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. Answered in 3 minutes by.