HomeBrandsYorkHVAC Systems (AC, Furnaces, Heat Pumps & Thermostats)2 blinks
Y
2 blinks
Moderate
York · HVAC Systems (AC, Furnaces, Heat Pumps & Thermostats)
Pressure Switch Open
Quick Answer
Error code 2 blinks on your York HVAC Systems (AC, Furnaces, Heat Pumps & Thermostats) means: Pressure Switch Open. This is usually fixable — see the step-by-step guide below.
Likely Causes
  1. Blocked flue pipe or combustion air intake
  2. Inducer motor not running or producing insufficient draft
  3. Cracked or disconnected pressure switch hose
  4. Condensate drain line clogged causing water backup into inducer
  5. Defective pressure switch diaphragm
How to Fix It
1
Inspect flue pipe and combustion air intake for blockages such as ice, bird nests, or debris
2
Check the pressure switch hose for cracks, kinks, or disconnections
3
Verify the inducer motor starts when a heating cycle is initiated
4
Clear the condensate drain line using compressed air or a wet-dry vacuum
5
Measure the pressure differential at the switch port with a manometer during inducer operation
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Pressure switch
Pressure switch tubing
Inducer motor assembly
Related Error Codes
1 blink3 blinks4 blinks5 blinks6 blinks
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