What it means
Grounding fault / poor neutral connection.
⚠ Call a profurnace
How it shows: Shown on the control board 7-segment display: E10
1Likely causes
- Grounding fault
- Poor neutral connection
2Safe DIY steps
- Technicianverify neutral wire connection to furnace and continuity to ground source
⚠ Safety firstIf you smell gas, do not touch any electrical switch or use a phone in the building; leave immediately and call your gas supplier from outside. Turn off electrical power at the furnace switch or breaker before opening any panel, and never bypass or jumper a limit, rollout or pressure switch. Gas valve, burner, venting, wiring and control-board work should be done by a licensed HVAC technician.
3When to call a pro
Call a licensed HVAC technician: line-voltage neutral and ground work must be done by a qualified person.
Find a local HVAC pro →Other Goodman codes
EE0
Furnace lockout after too many ignition retries (3 total): flame failed to establish or was lost after establishment.
EE1
Pressure switch circuit is closed at the start of the heating cycle.
EE2
Pressure switch circuit is not closed.
E11
Open rollout switch.
EE4
Flame sensed with no call for heat.
EE5
Open fuse.