GE GG40T12DXV troubleshooting hub
Use this device hub to troubleshoot GE GG40T12DXV for this water heater. Start with the most common codes, scan the latest fixes, or jump straight to the exact error page when you already know the code. This model currently has 10 distinct codes across 10 published fix pages.
Try E2, temperature, or won’t start.
Most common error codes
Start here when you want the shortest path from this device hub to the exact troubleshooting page.
GE GG40T12DXV error code OFF means gas control is off, the pilot is not lit, or thermopile power is insufficie
GE GG40T12DXV error code CONSTANTLY_LIT means the pilot was recently extinguished and the thermopile is coolin
GE GG40T12DXV error code 9_BLINKS_EVERY_3_SECONDS means defective door thermistor. This guide explains the lik
GE GG40T12DXV error code 8_BLINKS_EVERY_3_SECONDS means faulty pilot flame signal. This guide explains the lik
GE GG40T12DXV error code 7_BLINKS_EVERY_3_SECONDS means gas control or thermostat failed. This guide explains
GE GG40T12DXV error code 5_BLINKS_EVERY_3_SECONDS means water temperature sensor failed. This guide explains t
GE GG40T12DXV error code 4_BLINKS_EVERY_3_SECONDS means high water temperature limit reached. This guide expla
GE GG40T12DXV error code 2_BLINKS_EVERY_3_SECONDS means low thermopile power with the pilot burner lit. This g
Need more help with this model?
Use the exact error page when you know the code. Otherwise stay in this device hub to compare the most likely routes first, then branch into the fix that matches the symptom.
This panel stays shared across all products. Optional device links only appear when profile data exists.
Common troubleshooting themes
These patterns are derived from the currently published fixes for this model and help you pick the right route faster.
Recently updated fixes
Fresh pages first — useful when you’re troubleshooting right now.
GE GG40T12DXV Error Code OFF
GE GG40T12DXV error code OFF means gas control is off, the pilot is not lit, or thermopile power is insufficient. This guide explains the likely causes, the safest first checks, and when su…
GE GG40T12DXV Error Code CONSTANTLY_LIT
GE GG40T12DXV error code CONSTANTLY_LIT means the pilot was recently extinguished and the thermopile is cooling, or the control was recently turned off. This guide explains the likely cause…
GE GG40T12DXV Error Code 9_BLINKS_EVERY_3_SECONDS
GE GG40T12DXV error code 9_BLINKS_EVERY_3_SECONDS means defective door thermistor. This guide explains the likely causes, the safest first checks, and when support or service is the better…
GE GG40T12DXV Error Code 8_BLINKS_EVERY_3_SECONDS
GE GG40T12DXV error code 8_BLINKS_EVERY_3_SECONDS means faulty pilot flame signal. This guide explains the likely causes, the safest first checks, and when support or service is the better…
GE GG40T12DXV Error Code 7_BLINKS_EVERY_3_SECONDS
GE GG40T12DXV error code 7_BLINKS_EVERY_3_SECONDS means gas control or thermostat failed. This guide explains the likely causes, the safest first checks, and when support or service is the…
GE GG40T12DXV Error Code 5_BLINKS_EVERY_3_SECONDS
GE GG40T12DXV error code 5_BLINKS_EVERY_3_SECONDS means water temperature sensor failed. This guide explains the likely causes, the safest first checks, and when support or service is the b…
GE GG40T12DXV Error Code 4_BLINKS_EVERY_3_SECONDS
GE GG40T12DXV error code 4_BLINKS_EVERY_3_SECONDS means high water temperature limit reached. This guide explains the likely causes, the safest first checks, and when support or service is…
GE GG40T12DXV Error Code 2_BLINKS_EVERY_3_SECONDS
GE GG40T12DXV error code 2_BLINKS_EVERY_3_SECONDS means low thermopile power with the pilot burner lit. This guide explains the likely causes, the safest first checks, and when support or s…
All error codes
Pick your code to open the fix page.
All fixes for this model
One card per code. If a code has multiple variants, the card opens the filtered results list.
GE GG40T12DXV Error Code OFF
GE GG40T12DXV error code OFF means gas control is off, the pilot is not lit, or thermopile power is insufficient. This guide explains the likely causes, the safest first checks, and when su…
GE GG40T12DXV Error Code CONSTANTLY_LIT
GE GG40T12DXV error code CONSTANTLY_LIT means the pilot was recently extinguished and the thermopile is cooling, or the control was recently turned off. This guide explains the likely cause…
GE GG40T12DXV Error Code 9_BLINKS_EVERY_3_SECONDS
GE GG40T12DXV error code 9_BLINKS_EVERY_3_SECONDS means defective door thermistor. This guide explains the likely causes, the safest first checks, and when support or service is the better…
GE GG40T12DXV Error Code 8_BLINKS_EVERY_3_SECONDS
GE GG40T12DXV error code 8_BLINKS_EVERY_3_SECONDS means faulty pilot flame signal. This guide explains the likely causes, the safest first checks, and when support or service is the better…
GE GG40T12DXV Error Code 7_BLINKS_EVERY_3_SECONDS
GE GG40T12DXV error code 7_BLINKS_EVERY_3_SECONDS means gas control or thermostat failed. This guide explains the likely causes, the safest first checks, and when support or service is the…
GE GG40T12DXV Error Code 5_BLINKS_EVERY_3_SECONDS
GE GG40T12DXV error code 5_BLINKS_EVERY_3_SECONDS means water temperature sensor failed. This guide explains the likely causes, the safest first checks, and when support or service is the b…
GE GG40T12DXV Error Code 4_BLINKS_EVERY_3_SECONDS
GE GG40T12DXV error code 4_BLINKS_EVERY_3_SECONDS means high water temperature limit reached. This guide explains the likely causes, the safest first checks, and when support or service is…
GE GG40T12DXV Error Code 2_BLINKS_EVERY_3_SECONDS
GE GG40T12DXV error code 2_BLINKS_EVERY_3_SECONDS means low thermopile power with the pilot burner lit. This guide explains the likely causes, the safest first checks, and when support or s…
GE GG40T12DXV Error Code 10_BLINKS_EVERY_3_SECONDS
GE GG40T12DXV error code 10_BLINKS_EVERY_3_SECONDS means chamber exceeded maximum temperature and the system shut down. This guide explains the likely causes, the safest first checks, and w…
GE GG40T12DXV Error Code 1_BLINK_EVERY_3_SECONDS
GE GG40T12DXV error code 1_BLINK_EVERY_3_SECONDS means normal; the control is in pilot position and the pilot burner is lit. This guide explains the likely causes, the safest first checks,…
About this device hub
If your device shows an error code, start with the matching fix page. When a code returns repeatedly, it often points to an underlying cause (temperature, power delivery, sensors, locks, or wear).
Always follow basic safety: unplug before opening anything, and stop if you smell burning or see damage.