e1
Moderate
York · HVAC Systems (AC, Furnaces, Heat Pumps & Thermostats)
System High Pressure Fault
Quick Answer
Error code E1 on your York HVAC Systems (AC, Furnaces, Heat Pumps & Thermostats) means: System High Pressure Fault. This is usually fixable — see the step-by-step guide below.
Likely Causes
How to Fix It
1
Clean the outdoor condenser coil with a garden hose and approved coil cleaner (spray from inside out)
2
Verify the condenser fan motor is operating and drawing proper amperage
3
Check for obstructions around the outdoor unit and maintain minimum 24 inches clearance
4
Measure discharge pressure with gauges and compare to normal range for the ambient temperature
5
A licensed HVAC technician must handle refrigerant system diagnosis and any charge corrections
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
Condenser fan motor
Fan blade
High-pressure switch
Coil cleaner
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