What causes a pressure switch cycle lockout?
If your furnace isn’t venting correctly, the pressure switch may be stuck open. This is often caused by a blocked flue pipe, which makes it hard for the system to eliminate combustion gases. The flue pipe can easily get trapped with leaves, feathers, dirt, and other debris.
What does pressure switch cycle lockout mean on a furnace?
If the furnace is unable to achieve ignition for a call for heat, or if an unsafe condition is detected, the furnace will enter what is called “lockout mode.”
How do I get my furnace out of lockout mode?
Regardless of the culprit, you will have to perform a reset procedure to get your furnace out of lockout. Most modern gas furnaces can be reset by turning off the power, waiting around 20 seconds, then switching the power back on. Other furnace models may exit lockout after 1-2 hours and attempt to power on again.
How do you reset a low pressure lockout?
A low pressure alarm indicates the controller has received an open signal from the normally closed low pressure switch circuit. Three active alarms within one hour will trigger a compressor lockout to protect the refrigerant circuit. The lockout can be cleared by power cycling the controller.
Where is the reset button on a York furnace?
Locate the reset button on the furnace and press it to reset the furnace. It is usually located inside the blower compartment on the side of the blower motor. Be cautious as the housing may be hot. If the button is popped up, press it down.
What does system lockout mean on a furnace?
Two types of lockouts can happen with a furnace—a soft and a hard lockout. Soft lockouts refer to the situation where your furnace will let you attempt to start it again. If it fails to ignite, the furnace will go into a hard lockout. In this case, a manual reset will be required, which an HVAC professional should do.
What causes high pressure lockout on heat pump?
The most common cause of a refrigerant high-pressure switch tripping in the wintertime is lack of airflow across the indoor coil. One of the signs of lack of airflow is a high temperature split across the indoor coil.
How do I reset my YORK?
To reset your York air conditioner, follow these steps:
- Power off the thermostat.
- Power off your A/C unit.
- Locate the reset button.
- Press the reset button for 5 seconds.
- Turn the A/C unit back on.