Navien Boiler: Tripping the breaker
A Navien boiler that trips its breaker or RCD has an electrical fault — a short, a failing component drawing too much current, or a moisture / grounding problem. This needs a technician; repeatedly re-arming a tripping breaker is unsafe.
A Navien boiler that trips its breaker or RCD has an electrical fault — a short, a failing component drawing too much current, or a moisture / grounding problem. This needs a technician; repeatedly re-arming a tripping breaker is unsafe. On Navien boilers, this is linked to 2 fault codes (E515, E527). Below are the likely causes, the safe checks you can make, and exactly what our licensed BC gas technicians do — because boiler repair in British Columbia is licensed gas work, not a DIY job.
Boiler repair is licensed gas work in BC. The checks below are the safe limit of DIY. Do not open the boiler or work on gas, combustion or safety controls — read the fault code, reset at most once, and call a licensed technician if it returns.
What you might notice
- Boiler dead, resetting, or tripping the breaker
- Intermittent operation
- Display dropping out
- Boiler unresponsive or erratic
- Multiple unrelated faults at once
- Display errors that persist after reset
Safe checks you can make first
These are the only steps a homeowner should take. If they don’t resolve it, stop — the rest is licensed gas work.
- 1Do not keep re-arming a breaker that trips immediately
- 2Check for any water leaking onto the boiler’s electrics
- 3Note whether it trips at rest or only when the boiler fires
- 4Call a licensed technician — electrical faults inside the boiler are not DIY
Related Navien fault codes
These Navien codes are commonly behind “tripping the breaker”. Tap any code for its full meaning, causes and fix.
What our licensed technicians do
- Verify supply voltage, correct polarity and a solid ground
- Inspect internal wiring, fuses and connectors
- Test the transformer and control-board power rails
- Correct the fault at source and confirm stable operation
- Rule out sensors, wiring, power and grounding first
- Check board fuses, relays and output signals
Navien tripping the breaker — FAQ
Why does my Navien boiler keep tripping the breaker?
A Navien boiler that trips its breaker or RCD has an electrical fault — a short, a failing component drawing too much current, or a moisture / grounding problem. This needs a technician; repeatedly re-arming a tripping breaker is unsafe. The related Navien fault codes are E515, E527. A licensed technician confirms the true root cause with the right instruments before any repair.
Is it safe to keep resetting my Navien boiler when it shows "tripping the breaker"?
Reset it at most once. If "tripping the breaker" returns, the boiler is telling you there is a real fault that needs diagnosing — continuing to reset it can make things worse. Call GasBoilers.ca at 604-359-1081 and a licensed technician will find the cause.
Can you repair a Navien boiler with this problem in Greater Vancouver?
Yes. Our Red Seal–certified, TSBC gas-licensed technicians diagnose and repair Navien NCB-E, NCB-H, NHB, NFB and NPE-A2 series across Vancouver, Burnaby, Surrey, Richmond, the Tri-Cities and the rest of Greater Vancouver. Same-day appointments are often available — call 604-359-1081.
“Tripping the breaker” on other boiler brands
Navien boiler tripping the breaker? We can help today.
Licensed, Red Seal–certified gas technicians across Greater Vancouver. Upfront pricing, same-day service available.