e3
Moderate
York · HVAC Systems (AC, Furnaces, Heat Pumps & Thermostats)
Compressor Overcurrent
Quick Answer
Error code E3 on your York HVAC Systems (AC, Furnaces, Heat Pumps & Thermostats) means: Compressor Overcurrent. This is usually fixable — see the step-by-step guide below.
Likely Causes
How to Fix It
1
Measure compressor running amperage with a clamp meter and compare to the nameplate RLA
2
Check voltage at the outdoor unit disconnect under compressor load (should be within 10% of rated voltage)
3
Test the compressor run capacitor with a capacitance meter (should be within 5% of rated value)
4
Inspect the compressor terminal connections for signs of overheating or arcing
5
If the compressor consistently exceeds RLA, a licensed HVAC technician should evaluate for compressor replacement
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
Compressor run capacitor
Hard start kit
Contactor
Compressor (if failed)
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