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Indianapolis
Water Heater Experts
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Why Does My Navien Tankless Water Heater Keep Shutting Off?
A Navien tankless water heater that repeatedly shuts off can leave you without reliable hot water and may indicate an underlying mechanical, electrical, venting, or maintenance issue.
Hot Water Pros provides professional Navien diagnostics and repair throughout Indianapolis and surrounding communities.
Common Reasons A Navien Keeps Shutting Off
Several problems can cause repeated shutdowns:
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Ignition failures
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Flame loss
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Gas supply issues
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Venting restrictions
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Airflow problems
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Scale buildup
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Dirty filters
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Low water pressure
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High water pressure
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Electrical faults
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Control board issues
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Condensate drainage problems
Error Codes Often Associated With Repeated Shutdowns
​Common error codes include:
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Error 003
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Error 012
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Error 109
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Error 110
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Error 351
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Error 515
Repeated shutdowns often occur when the unit detects a condition that could affect safe operation.
Can I Troubleshoot The Problem Myself?
Homeowners can safely check:
Homeowners can safely check:
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Gas shutoff valves
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Water supply valves
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Circuit breaker position
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Exterior intake and exhaust vents
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Visible condensate drainage issues
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Error code display
If shutdowns continue, professional diagnosis is recommended.
Warning Signs Of A Larger Problem
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Frequent system resets
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Intermittent hot water
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Error codes
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Reduced water flow
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Strange noises
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Water leaks
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Long delays before hot water arrives
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Unit shuts down during use
Repeated Shutdowns Usually Mean The Underlying Problem Has Not Been Fixed
Many homeowners temporarily restore hot water by resetting their Navien, only to experience the same shutdown again days later. Repeated shutdowns often indicate ignition, venting, pressure, or maintenance-related problems that require proper diagnosis.
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Hot Water Pros can identify the root cause and help prevent future interruptions.
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Call Today: 317-922-9043
Why Indianapolis Homeowners Choose Hot Water Pros
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Licensed Indiana plumbing contractor
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Experienced with Navien tankless systems
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Same-day service available
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Water pressure diagnostics
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Tankless flushing and maintenance
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Upfront pricing
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Serving Indianapolis, Carmel, Fishers, Westfield, Noblesville, Greenwood, Brownsburg, Whitestown, and Zionsville
Frequently Asked Questions
Why does my Navien keep shutting off?
Common causes include ignition problems, vent restrictions, water pressure issues, electrical faults, and maintenance-related problems.
Can scale buildup cause repeated shutdowns?
Yes. Heavy scale buildup can affect heat transfer and system performance.
Can a dirty filter cause shutdowns?
es. Restricted flow can create operating issues and trigger faults.
Will resetting my Navien solve the problem?
Sometimes temporarily, but recurring shutdowns usually indicate an underlying issue.
Locally Owned & Operated
Hot Water Pros proudly provides Navien repair throughout Indianapolis, Carmel, Fishers, Westfield, Noblesville, Greenwood, Brownsburg, Whitestown, Cicero, and Zionsville. Our Navien trained technicians can quickly diagnose tankless water heaters and restore reliable hot water to your home.
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Professional installation of
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Fast diagnostics and expert repairs to keep your tankless water heater running
like new.
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The plumbing services provided by Hot Water are best in class. They are extremely professional experts who show up same / next day and provide top quality services. I have used them for new plumbing installations as well as emergency situations and they have been incredibly responsive and have provided best in class work.
Jen W.
Hot Water Pros did exceptional work for me; they will be my go-to for all future plumbing needs. Cameron and his crew are incredibly thoughtful, responsive, and professional. Their workmanship is first-rate, and their pricing is very competitive. When my 10-year-old water heater started to leak, they took the time to understand my needs and didn’t try to sell me on installing more than what my family and I need or will use. That kind of service is special.
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Cameron is one of the best contractors I have ever worked with. He’s extremely responsive, trustworthy and communicative. I use him at my personal home and recommend him to all of my clients. I cannot say enough good things about Hot Water Pros!!
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