The control reports a grounding fault. Grounding and line-voltage checks require a qualified technician.
Professional Required
Grounding fault
Furnace fails to operate and LED displays E10
Poor neutral connection or incorrect wiring to neutral
Stop attempting resets and have a qualified technician inspect electrical supply, grounding and wiring. Do not open electrical compartments or modify ground connections.
Neutral wire, wiring harness
Contact a qualified HVAC technician for diagnosis and repair; do not bypass safety devices or attempt internal gas or electrical repairs.
If you smell gas, leave the area and contact your gas utility or emergency services from a safe location. Never bypass safety controls. Internal furnace servicing should be performed by qualified personnel.
Learn more about the furnace components and operating conditions commonly associated with diagnostic error codes: