GE · GeoSpring DEEJS / DFEJS (2015–2016)
GE GeoSpring DEEJS / DFEJS (2015–2016) error code bAd linE (F12)
What it means
The voltage is too low at power-up. Unit is not receiving 240VAC as intended (incorrect wiring).
What GE says to do
Turn off power to the water heater (generally at the breaker panel). Then read the Electrical Connections section of the Installation Instructions, and contact the installer to verify the electrical input to the water heater. The installation section (page 15) adds: turn the power off, correct the wiring issue, then turn the power back on.
Last checked 2026-10-03.
Safety first
- CAUTION: For your safety, DO NOT attempt repair of electrical wiring, controls, heating elements or other safety devices. Refer repairs to qualified service personnel. (p.19)
- CAUTION: Risk of Shock - Shut off power to the water heater before draining water. (p.9)
From the manufacturer's manual for this series.
The same code on other models
Codes mean different things on different heaters. Match the series to the model number on your rating label.
- Bradford White AeroTherm (RE2H…-1NCTT models): bAd linE (F12)
- Bradford White Heat pump RE2H (-1NCWT models): bAd linE (F12)
- GE GeoSpring GEH50DEED (2012–2014): bAd linE (F12)
- GE Profile GEOSPRING Smart (PF / PH, 2025 on): F12