Rinnai Combi Boiler Repair in New Westminster in Greater Vancouver

When a Rinnai combi acts up in a New Westminster home — no hot water, heating that won't fire, or an error code on the display — the goal is an accurate diagnosis, not parts thrown at a guess. A combi is one appliance doing two jobs, so a single fault can affect your showers, your radiators, or both, and the cause is rarely obvious from the symptom alone.

Common Rinnai combi faults we diagnose in New Westminster

Most service calls trace back to a handful of areas: ignition not striking, the unit locking out on a venting or combustion fault, the flame sensor or another safety device tripping, low system pressure on the heating side, or scale building up in the heat exchanger and slowing hot-water flow. New Westminster's damp coastal air and the Lower Mainland's mineral content in the water both play a role over time, especially in the domestic hot-water passages.

Diagnosis on a combi means reading the fault history, checking gas pressure, inspecting the venting and condensate path, and confirming the controls and sensors are reporting correctly. Work on gas, ignition, sensors, the fan, gas valves, and the heat exchanger is licensed gas-fitting work and is not a DIY task.

• No hot water or hot water that runs lukewarm or cycles cold
• Heating that won't start while hot water still works (or the reverse)
• Repeated lockouts with an error code on the display
• Gradual loss of system pressure on the heating loop
• Reduced hot-water flow from scale in the heat exchanger

Safe checks you can do, and where to stop

Before booking a repair, a few safe homeowner checks can rule out the simplest causes: confirm the thermostat is calling for heat and set correctly, check that the gas supply to the unit is on, look for an obvious blockage at the exterior vent termination (snow, leaves, a bird's nest), and power-cycle the unit once. If the fault clears and stays clear, the issue may have been transient.

Stop there. If the unit relocks, throws a combustion, ignition, sensor, or pressure code, or you notice anything unusual with the burner, that needs a licensed technician. And if you ever smell gas or suspect carbon monoxide, leave the home and call your gas utility's emergency line first — do not troubleshoot.

Frequently Asked Questions

My Rinnai combi has hot water but no heat — what's wrong?

Because a combi serves heating and hot water from one unit, a fault on just the heating side often points to low system pressure, a heating-circuit control or pump issue, or a thermostat problem rather than the burner itself. A technician can confirm which after reading the fault data and checking pressure.

Is it worth repairing my Rinnai combi or should I replace it?

It depends on the unit's age, the part involved, and how it has been maintained. A well-kept Rinnai combi often justifies repair; a unit near end of life with a major component failure may be better replaced. An honest assessment weighs both for your New Westminster home.

Can I reset the error code myself?

You can safely power-cycle the unit once and confirm the thermostat, gas supply, and exterior vent are clear. If the code returns, that is the unit telling you a real fault exists — it needs licensed diagnosis rather than repeated resets.

What should I do if I smell gas near the boiler?

Leave the home immediately and call your gas utility's emergency line from outside. Do not switch anything on or off and do not try to inspect the unit. Gas safety always comes before any repair.

HeatLand Heating & Cooling is a licensed and insured, TSBC-certified HVAC company serving homeowners across Greater Vancouver. Our technicians diagnose the real fault, explain your options in plain language, and complete the work safely and to code.

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