Error code
GE / Water heater
F78
Leak sensor has detected water.
What it means
Leak sensor has detected water.
This explanation is shared only by models whose manufacturer documents the same code, meaning, and guidance.
Manufacturer guidance
- Find and correct the source of water around the heater.
- Reset the shut-off valve if equipped, following the owner manual.
- Arrange plumbing service if needed.
Manufacturer source
Models documented with this signal
Select your exact model below to open its manufacturer source. Manual editions and model revisions can differ.
- GE PF40S10FPYUSOfficial source · Source page: 32
- GE PF50S10FPYUSOfficial source · Source page: 32
- GE PF65S10FPYUSOfficial source · Source page: 32
- GE PF80S10FPYUSOfficial source · Source page: 32
- GE PH40S10BPYUSOfficial source · Source page: 32
- GE PH50S10BNYUSOfficial source · Source page: 32
- GE PH50S10BPYUSOfficial source · Source page: 32
- GE PH65S10BNYUSOfficial source · Source page: 32
- GE PH65S10BPYUSOfficial source · Source page: 32
- GE PH80S10BNYUSOfficial source · Source page: 32
- GE PH80S10BPYUSOfficial source · Source page: 32
If there is a safety risk, stop using the appliance and follow the manufacturer’s instructions.