Home / Error codes / Water heater / E030
Navien water heater error E030
Exhaust overheating. The exhaust temperature is too high.
Serious · you can check this yourself
E030
Meaning: Exhaust overheating
What causes E030
The exhaust temperature is too high.
What to do
Check the vent is clear. If it returns, the heat exchanger needs service.
Can I fix it myself?
You can make the first check yourself, but stop there: this code can point to a serious fault.
If the code comes back
Book a visit and add the code to the booking. A technician arrives knowing which parts to bring, diagnoses the water heater for a flat $89 and gives you an exact quote before doing any work.
Same water heater