We may earn a commission from links on this page. Learn more about affiliate links

Goodman E10: Grounding fault / poor neutral connection

Ref. GOODMAN-E10 · From the Goodman furnace manual · Updated 2026-10-23

Status codeE10Goodman
What it means

Grounding fault / poor neutral connection.

Call a profurnace
How it shows: Shown on the control board 7-segment display: E10

Find a local HVAC pro →

§1Likely causes

  • Grounding fault
  • Poor neutral connection

§2Safe DIY steps

  1. 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 →

§4Other Goodman codes