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BoilerTroubleshooting2026-03-08

Common Triangle Tube Combi Boiler Problems & Fixes

The most common Triangle Tube combi boiler faults — no heat, no hot water, leaks and error codes — and how we fix them.

Like any combi boiler, Triangle Tube units can develop faults over the years. Here are the most common Triangle Tube issues and how our licensed technicians resolve them across Greater Vancouver.

Common Triangle Tube faults

Typical issues on combi boilers including Triangle Tube are no heat or hot water, low or dropping pressure, leaks from the relief valve or pump, ignition lockouts, and error-code faults — most of which are repairable.

Getting your Triangle Tube fixed

Our technicians diagnose the exact Triangle Tube fault — often using its error code — and repair it with genuine parts. Where a major part fails on an older unit, we give honest repair-vs-replace advice.

Key takeaways

  • No heat or hot water: check pressure and thermostat first
  • Note the exact error code
  • Don't repeatedly reset after lockouts
  • We repair all Triangle Tube models

Need help with your boiler?

Licensed, gas-certified technicians serving Greater Vancouver since 1999. CombiBoiler.ca — A division of ROMA Heating Ltd..

Frequently asked questions

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