If there's a switch failure, there are several options for recovery: 1. If the pressure switch stops working, you won’t be able to hear the valve opening. If there’s a sound, your pressure switch is in good condition. 2. Turning off the furnace is also an option. Then, check whether the inducer fan is making any noises. Also, if the motor is slow or you notice something else, the motor is the problem and should be replaced, not the switch. 3. Make sure the switch hose is securely fastened. A loose switch hose can be tightened to resolve the issue, but a hole in the line may require sealing. The broken section can alternatively be taken out and the hose reconnected. Make sure the housing is excellent before you begin any of the replacements. After the hose has been repaired, the switch will eventually work correctly.