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Error code · Water Heater

GE GeoSpring GEH50/GEH80 Code F-F: Expansion Valve Out of Range

On older GE GeoSpring hybrid electric water heaters, the GEH50DEEJ, GEH50DFEJ, GEH80DEEJ and GEH80DFEJ models built around 2014 to 2016, F-F means the electronic expansion valve is out of range, with a probable refrigerant leak. The…

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

What F-F means

On older GE GeoSpring hybrid electric water heaters, the GEH50DEEJ, GEH50DFEJ, GEH80DEEJ and GEH80DFEJ models built around 2014 to 2016, F-F means the electronic expansion valve is out of range, with a probable refrigerant leak. The valve meters refrigerant into the evaporator, and when it runs past its limits the control stops the heat pump. The electric elements usually keep supplying some hot water. The same letters mean something else on the newer PF and PH units.

Common causes of F-F

  • Refrigerant low because of a probable leak
  • Electronic expansion valve operation
  • Valve wiring
  • Evaporator sensing
✓ One safe check you can try

1. Note the code and the full model number from the rating label. 2. Keep the air inlet and outlet clear of storage. 3. Do not open the unit or handle the refrigerant lines. 4. Call us to test the valve and look for a leak.

! Why to stop there
  • The valve may be responding to a leak rather than failing itself.
  • We test the valve before replacing it.
  • We quote sealed-system repairs in writing first.
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

bAd linE (F12)GE GeoSpring First-Generation GEH50DEED Code bAd linE (F12): Supply voltage low F13GE GeoSpring First-Generation GEH50DEED Code F13: Keypad key stuck Dirty Filter (F14)GE GeoSpring First-Generation GEH50DEED Code Dirty Filter (F14): Clean the filter F15GE GeoSpring First-Generation GEH50DEED Code F15: DataFlash memory error Attention! Tank not filled!GE GeoSpring GEH50DNSRSA Message "Attention! Tank not filled!": Fill before power Heat Pump FailureGE GeoSpring GEH50DXSRGA Message "Heat Pump Failure": Heat pump section problem Water Heater FailureGE GeoSpring GEH50DNSRSA Message "Water Heater Failure": Electric side problem System FailureGE GeoSpring GEH50DXSRGA Message "System Failure": Immediate attention
F-FF-F questions
What does the expansion valve do?

It meters refrigerant into the evaporator and adjusts as conditions change. F-F means it moved outside its expected range, which the control treats as a probable refrigerant leak.

Is F-F the same as F-C?

No. F-C is an evaporator that is not frost free. F-F is the valve out of range. Both can involve a possible leak, so we look at them together.

Can I keep using it?

Yes for hot water through the electric elements, at a higher running cost. The heat pump may stay off until we repair it, and we quote the work in writing first.

Book a visit

Still seeing F-F?

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

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