What does 4 blinking lights on my furnace mean?

What does 4 blinking lights on my furnace mean?

Why is my furnace light blinking 4 times? Four red flashes indicate that a 24-volt fuse or the high-limit switch is open. Possible causes include an improperly sized ducting system, a dirty air filter, a faulty blower motor, an open fuse on the control board or restricted circulating airflow.

What does a blinking red light mean on a York furnace?

Taking it from the top, if you happen to see 1 red colored flash on your York Furnace, it signals that the gas valve isn’t receiving power. You may have a gas leak at the valve. 2 red colored flashes means that the switch that controls pressure is possibly stuck.

What are the diagnostic codes for a York Furnace?

However, a listing of York diagnostic codes can be found at: The 4 flash code for 80% efficient single stage furnaces seems to be for an open high temperature limit switch, not a flame rollout switch. The high temperature limit switch should open if the furnace overheats, and should close again automatically when the furnace cools off again.

What does a flashing light on a York Furnace mean?

Hunker may earn compensation through affiliate links in this story. Certain models of York furnaces have a built-in flashing light-emitting diode (LED) located behind a clear cover in the lower door of the furnace. This LED flashes a fault code in a series of green, amber or red light flashes to signal normal operation or system problems.

Why does my 80% efficient furnace have 4 Flash codes?

The 4 flash code for 80% efficient single stage furnaces seems to be for an open high temperature limit switch, not a flame rollout switch. The high temperature limit switch should open if the furnace overheats, and should close again automatically when the furnace cools off again.

How long is the warranty on a York Furnace?

The furnace is 4 years old and is still covered by a 5 year parts warranty. This system provides heat and cooling to 3 zones. Over t … read more I have a York Furnace (PS9 High Efficiency Tubular Heat Exchanger Series), working fine until recently.