Why is my boiler clicking but not lighting?

The clicking means the ignition electrode is sparking, but gas isn't reaching the burner (gas valve issue), the spark is weak (electrode problem), or the flame isn't being detected (sensor fault). A licensed technician can diagnose which one applies.

Can I fix boiler ignition problems myself?

No — ignition systems involve gas and high-voltage electrical components. Only a licensed gas fitter should diagnose and repair ignition faults under BC law.

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Boiler Ignition Problems

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Licensed & Insured Gas-Certified Technicians Serving Vancouver Since 1999

When your boiler attempts to fire but fails to light — clicking, sparking, or cycling repeatedly without ignition — you have an ignition problem. This can range from a simple electrode gap adjustment to a failed gas valve or control board. Our technicians diagnose ignition faults accurately and fix them fast.

Ignition problems are safety-critical — repeated failed ignition attempts can allow unburnt gas to accumulate. Our TSSA/BC gas-certified technicians arrive with the diagnostic tools and common ignition components (electrodes, flame sensors, ignition modules) for faster same-day repairs.

Common Causes of Ignition Failure

Ignition problems typically stem from faulty ignition electrodes (worn, dirty, or incorrectly gapped), a failed ignition module or transformer, gas valve issues (not opening), or flame rectification problems (flame sensor not detecting the flame). In some cases, a blocked condensate trap prevents ignition as a safety measure.

Worn or dirty ignition electrodes
Failed ignition transformer or PCB module
Gas valve not opening properly
Flame sensor not detecting flame (rectification fault)
Blocked condensate trap triggering safety lockout

Our Ignition Repair Process

We inspect the ignition electrode gap, cleanliness, and ceramic insulator condition. We check the ignition transformer output, gas valve operation, and flame sensing circuit. Once the faulty component is identified, we provide a fixed quote and complete the repair using genuine OEM parts, testing multiple ignition cycles to verify reliable operation.

This is not a DIY repair

Combi boilers are gas-fired appliances regulated under the BC Safety Standards Act. Opening the unit, touching the gas valve, or working on the flue without a valid BC gas-fitter licence is both unsafe and illegal. Diagnosing the fault is helpful — fixing it should always be left to a certified technician.

Call 778-909-5731