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Error code · Water Heater

GE GeoSpring PF/PH Code F90: E2 Module Unplugged or Damaged

F90 on GE Profile GeoSpring PF and PH series heat pump water heaters (2025 and newer) means the E2 module is unplugged or damaged. The E2 module is a small memory module that holds settings the…

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Code
F90
Appliance
Water Heater
Brand
GE
Warranty
30-day workmanship

What F90 means

F90 on GE Profile GeoSpring PF and PH series heat pump water heaters (2025 and newer) means the E2 module is unplugged or damaged. The E2 module is a small memory module that holds settings the control needs. If the control cannot find it or cannot read it properly, F90 is shown. Owners may see the heater refuse to start, run in a limited way, or lose its usual settings.

Common causes of F90

  • E2 module not seated in its socket
  • E2 module damaged
  • Control board socket or connection
✓ One safe check you can try

1. Check the display for the code and the rating label for the model number. 2. Do not open the control area or try to reseat anything inside. 3. Avoid repeatedly switching the breaker off and on. 4. Call us, and we will diagnose the module and repair it with the power off.

! Why to stop there
  • The module can be unseated, damaged, or the socket can be the cause.
  • We handle the module only with power off and the unit safe.
  • The price is given in writing before replacement.
Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.
→Same appliance

Other Water Heater codes

System FailureGE GeoSpring GEH50DXSRGA Message "System Failure": Immediate attention Wiring to unit incorrectGE GeoSpring GEH50DNSRSA Message "Wiring to unit incorrect. Must be 240V not 120V": Supply check EPGE GeoSpring GEH50DXSRGA Code EP: Energy price signal F5, F6, F7, F8GE GeoSpring First-Generation GEH50DEED Codes F5-F8: Sensor failures F9GE GeoSpring First-Generation GEH50DEED Code F9: Bottom element problem F10GE GeoSpring First-Generation GEH50DEED Code F10: Top element problem F11GE GeoSpring First-Generation GEH50DEED Code F11: Tank must be filled bAd linE (F12)GE GeoSpring First-Generation GEH50DEED Code bAd linE (F12): Supply voltage low
F90F90 questions
What is the E2 module?

It is a small memory module on the control that stores information the heater needs to run. F90 appears if the control cannot find it or cannot read it properly.

Why can't I plug it back in myself?

The module sits inside the control area, which has live circuits. We handle it with the power off and the right tools, so the board and your hands stay safe.

Will the heater work at all?

It may run in a limited way or not at all. Hot water is not guaranteed until the module issue is repaired, and we give you the repair price in writing first.

Book a visit

Still seeing F90?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 547-5545