Navien - ⛔ Do Not Use

Navien - Error Code E010

Q: "What does Navien Water Heater error code E010 mean?"

"Error code E010 on a Navien tankless water heater indicates: Abnormal air pressure — flue or inlet problem. The unit has detected this condition and has limited or stopped operation to prevent further damage."

Q: "How do I fix Navien Water Heater error code E010?"

"Start by powering the unit off for 30 seconds and restarting. If error E010 returns, the underlying cause (abnormal air pressure — flue or inlet problem) needs to be addressed. Check wiring connections and filters first before replacing components."

Q: "Is Navien error code E010 serious?"

"It depends on the root cause. Some E010 errors resolve with a reset. Others indicate a failed component that requires professional repair. Don't continue operating with this error — it can lead to further damage."

Navien Water Heater error code E010: Abnormal air pressure — flue or inlet problem.

Is it safe?

⛔ No — stop using

Do NOT operate — potential gas or CO hazard. Ventilate the area and call a technician immediately.

Can I fix it?

Technician Required

Repair cost

Pro: $150–$600

⏱ 1–3 hours (pro)

What Does Error Code E010 Mean?

Navien Water Heater error code E010: Abnormal air pressure — flue or inlet problem.

Part that typically fails: Gas valve / igniter / heat exchanger

Do NOT operate — potential gas or CO hazard. Ventilate the area and call a technician immediately.

Symptoms You May Notice

⚠️ Unit fires then shuts off
⚠️ Inconsistent hot water
⚠️ Error code on display

What the Technician Will Do

🔧 Professional repair required. Do not attempt DIY — this repair requires specialized tools or certification.

1 Check your owner's manual for model-specific guidance on error code reset procedures
2 Contact a licensed HVAC technician — refrigerant handling requires EPA 608 certification
3 If the error persists after reset and basic checks, contact a qualified technician

⚡ Quick tip: Always try a full power reset first — turn the unit off at the breaker, wait 30 seconds, restore power.

Frequently Asked Questions

What does Navien Water Heater error code E010 mean? ▼

Error code E010 on a Navien tankless water heater indicates: Abnormal air pressure — flue or inlet problem. The unit has detected this condition and has limited or stopped operation to prevent further damage.

How do I fix Navien Water Heater error code E010? ▼

Start by powering the unit off for 30 seconds and restarting. If error E010 returns, the underlying cause (abnormal air pressure — flue or inlet problem) needs to be addressed. Check wiring connections and filters first before replacing components.

Is Navien error code E010 serious? ▼

It depends on the root cause. Some E010 errors resolve with a reset. Others indicate a failed component that requires professional repair. Don't continue operating with this error — it can lead to further damage.

More Navien - Error Codes

All Navien - codes → All Navien HVAC codes →