e6
Moderate
York · HVAC Systems (AC, Furnaces, Heat Pumps & Thermostats)
Indoor Coil Temperature Sensor Fault
Quick Answer
Error code E6 on your York HVAC Systems (AC, Furnaces, Heat Pumps & Thermostats) means: Indoor Coil Temperature Sensor Fault. This is usually fixable — see the step-by-step guide below.
Likely Causes
How to Fix It
1
Locate the indoor coil thermistor on the evaporator coil surface
2
Measure the thermistor resistance and compare to the manufacturer's chart
3
Verify the sensor is properly mounted to the coil with good thermal contact
4
Check the wiring and connector at the indoor control board for corrosion
5
Replace the sensor if resistance is out of the expected range
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
Indoor coil thermistor
Sensor mounting clip
Wire connectors
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