Reliable Heating and Cooling Solutions – Quality Service, Fair Prices, Guaranteed Satisfaction!

Follow Us On:

Logo
Contact US!

Goodman Error Code EEF: Condensate switch open (Furnace)

Updated · by Aurora Star Tech Inc.

Goodman error code EEF on a furnace means: Condensate switch open. It is also called Goodman diagnostic code EEF.

Medium severityFurnaceGoodman/Amana *MVC96 (34.5 in. chassis)

Homeowner? What Goodman code EEF means for you

Check, then call Your furnace is reporting: Condensate switch open. This is often caused by something simple. Try the safe checks below; if the code returns, book a service call before it turns into a no-heat or no-hot-water emergency.

Safe things you can check yourself

  • Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
  • Make sure the unit has power: its on/off switch (often looks like a light switch near the unit) is ON and the breaker in the electrical panel is not tripped.
  • Make sure the furnace front door or panel is closed properly; many furnaces will not run with the door switch open.
  • Look at the air filter. If it is grey and clogged, replace it; a blocked filter causes many shutdowns.
  • Outside, make sure the intake and exhaust pipes or vent cap are not blocked by snow, ice, leaves or a nest.
  • Check that the gas valve next to the furnace is open (handle in line with the pipe). Do not force it.
  • Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.

Call (647) 657-2977Book a service call

Licensed technicians serving Vaughan, Toronto and the GTA.

What does Goodman error code EEF mean?

The auxiliary (condensate) switch is open. The manual lists a high water level at the evaporator coil as the cause.

Applies to: GMVC96, GCVC96, AMVC96, ACVC96 (*BA, ComfortBridge)

Common causes of Goodman code EEF

  • High water level in the evaporator coil pan
  • Plugged coil drain, trap or drain piping
Safety: Gas, electrical and refrigerant work must be done by a licensed technician. Turn off power and gas before servicing, never bypass a safety control, and always follow the manufacturer's manual for your exact model.

Goodman models that use code EEF

*CVC960403BNB**CVC960603BNB**CVC960804CNB**CVC961005CNB**CVC961205DNB**MVC960403BNB**MVC960603BNB**MVC960803BNB**MVC960804CNB**MVC961005CNB**MVC961005DNB**MVC961205DNB*ACVC96AMVC96GCVC96GMVC96

Other Goodman Furnace codes

CodeMeaning
EE9High-stage pressure switch did not close
EEAReversed line polarity or grounding error
EEbExternal gas valve error - valve not energized when it should be
EECInternal gas valve error - valve energized when it should not be
EEdCondensate or auxiliary alarm switch open
EEEInternal control fault (IRQ loss)
EEHTwinning error
EEJInducer relay error
EELIgniter relay / igniter circuit fault
EEnIgniter open
EOLOEM test mode
ErrActive alarm menu

All Goodman Furnace error codes →

Goodman code EEF: homeowner questions

What does Goodman code EEF mean?

Condensate switch open. The auxiliary (condensate) switch is open. The manual lists a high water level at the evaporator coil as the cause.

Is it safe to keep using my furnace with code EEF?

It depends on the cause. This is often caused by something simple. Try the safe checks below; if the code returns, book a service call before it turns into a no-heat or no-hot-water emergency.

Can I reset Goodman code EEF myself?

You can try one reset (power off for 30 seconds, then on). If Goodman code EEF comes back, the cause is still there and a licensed technician should check it.

Who can fix Goodman code EEF near me?

Aurora Star Tech Inc. repairs Goodman furnaces in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.

Homeowner help: Furnace Not Turning On: What to Check · Furnace Blinking Light: What the Flash Codes Mean

Troubleshooting guides

Source: Goodman Service and Troubleshooting ACVC96*BA/AMVC96*BA/GCVC96*BA/GMVC96*BA , Alarm Code Table p.56 / Troubleshooting Chart p.62. Written in our own words as a summary; always check the original manual.

General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.

© 2026 Aurora Star Tech Inc. All rights reserved. This page may not be copied, republished or used to train other systems without written permission.

Emergency Furnace Repair

647-657-2977